Brazil

Brazil is the largest country in South America and the fifth largest in the world, covering roughly half of the continent. It stretches from the equatorial rainforest near the equator to temperate uplands in the far south, and its territory contains most of the Amazon drainage basin, the largest river system on Earth. The country's landscape therefore combines lowland rainforest, wetlands, semi-arid scrub, savannas, and highland plateaus, and these features shape its climate, biodiversity, settlement patterns, and economy. Brazil is also one of the world's most biologically diverse countries, which makes its geography central to global debates on biodiversity and climate change.

This entry describes Brazil's physical and human geography as a whole. It begins with the country's size, borders, and coastline, then turns to its landforms, geological origins, and river systems. Next it covers climate, the Amazon's role in regional moisture cycles, and the six major biomes. The later sections examine land use, mineral and energy resources, deforestation and environmental change, population and urban distribution, administrative regions, transport infrastructure, and neighboring countries. The entry closes with the history of geographic mapping and several unresolved scientific questions about the country's future environment.

Location, size and borders

Brazil occupies most of the eastern half of South America and is the largest country on the continent. Its area is about 8.5 million square kilometres, which places it fifth among the world's countries, behind Russia, Canada, China and the United States. Published figures differ slightly because they depend on how inland water and coastal boundaries are measured. The country covers close to half of South America's land area and is the largest country in the Southern Hemisphere. Apart from a small number of offshore islands, the national territory is one continuous land mass.

Brazil's extent is large in both directions. Its northernmost point, Monte Caburaí in Roraima, lies a little north of 5°N. Its southernmost point is a stream on the Uruguayan frontier at about 33°45'S. The north-south distance is roughly 4,400 kilometres, and the east-west distance is of similar length. This range crosses several climatic zones. In the north, the country includes equatorial lowlands, while in the far south the land reaches subtropical latitudes, where cooler conditions and occasional frost occur. The equator crosses the country near the Amazon estuary, so a considerable part of the national territory lies in the Southern Hemisphere, with a small northern portion beyond the equator.

Brazil shares land borders with ten of the twelve South American countries. These are Uruguay, Argentina, Paraguay, Bolivia, Peru, Colombia, Venezuela, Guyana, Suriname and the French overseas department of French Guiana. Only Chile and Ecuador do not share a border with it. The total length of the land frontier is roughly 15,700 kilometres, and much of it runs through forest, savanna and river systems rather than along the lines of mountain ranges. The western frontier is particularly long, because Brazil extends inland into the Amazon basin and the central plateau, and that reach places it between several Andean and lowland neighbours.

The Atlantic coast forms the eastern edge of the country. Estimates of its length range from about 7,370 kilometres to about 7,490 kilometres, with the difference depending on how the indented shoreline and offshore islands are counted. The coast is broadly arranged as an arc that gives the country the rough shape of a triangle. Its northeastern tip, Ponta do Seixas in Paraíba, lies close to 34°47'W and is the easternmost point of the Americas. Because the equator passes through the north of the country, the Atlantic coast is divided by that line. A short stretch of the coast in Amapá and the lower Amazon lies north of the equator, which places it in the North Atlantic. Most of the coast, including the northeastern bulge and the whole of the southeastern shore, lies south of the equator in the South Atlantic. The Atlantic is one ocean, so the north-south distinction reflects latitude rather than any separation of the sea.

Coastline and offshore territories

Length and measurement

Brazil's coastline is usually given as 7,491 km, which ranks it among the longer national coastlines in the world. The coastline of Brazil measures 7,491 km, making it the 16th longest national coastline in the world. Other references round this to about 7,400 km, and some report a slightly smaller figure for the Atlantic shore alone. The differences mostly reflect how the shoreline is traced around bays, estuaries and islands. The coastline touches exclusively the Atlantic Ocean. Along its length the shore faces both the northern and southern Atlantic, with the northeastern coast on the North Atlantic and the southeastern coast on the South Atlantic.

Coastal environments and the marine zone

The coast crosses both the intertropical and subtropical belts, which produces a wide range of habitats. The Brazilian coastal zone is roughly 8,500 km long and extends from about 4°30′N to 33°44′S. Its location on the intertropical and subtropical zones determines the presence of very distinct environments of high ecological and touristic relevance – coastal reefs, mangroves, coastal lagoons, sandbanks, wetlands, beaches and dunes. Water temperature also varies along the shore, since cold water washes the southern and southeastern coast while warmer water reaches the north and northeast.

Mangroves are among the most significant of these habitats. The mangroves cover an area of about 14,000 km^2, and the wetlands another 11,000 km^2. Brazil holds a substantial share of the world's total, with 3,000 km of coral reefs and 12% of the world's mangroves within its maritime region. Mangrove loss has been considerable. Mangrove area has declined 46% since 1983 due to human settlements, the conversion of coastal areas to agriculture and silviculture, and the establishment of aquaculture shellfish farms in the intertidal zone. Shrimp farming alone has been linked to a 26% loss in the northeast, for example in Ceará.

Sandy coasts are dominated by restingas, which are coastal forests which form along coastal sand dunes in Brazil. Their soils are typically sandy, acidic, and nutrient-poor. The dunes are highly dynamic, since high and prolonged winds result in frequent movement and migration of the dunes. The Lençóis Maranhenses area in Maranhão shows this clearly, where patches of restinga are interspersed with some of the most extensive coastal dunes in the world. The park's dune field is also linked to the continental shelf, since one interpretation of its formation includes the extension of the continental shelf, along with later marine transgressions and river sediment input.

The continental shelf and offshore waters

Beyond the beach, the sea extends into a large marine zone. Brazil's exclusive economic zone covers 3.6 million km², which is one of the largest maritime areas of any coastal state in the Atlantic. Cliffs and rocky shores are another part of this coastal system. Some of the cliffs are formed by rocks of volcanic origin and part are extensions of mountains, near the coast, which reach the seabed. Biologists also treat these rocky shores as a marine extension, because most organisms that inhabit rocky shores are related to the ocean. Coastal forest remnants are also found near the shore, with the largest residual spots of the Atlantic rain forest located on the coastal zone.

Islands and archipelagos

Brazil's offshore islands are scattered along the continental margin and in the open South Atlantic. The best known is Fernando de Noronha, located 350 kilometers (217 mi) northeast of its "horn", and several small islands and atolls in the Atlantic such as Abrolhos, Atol das Rocas, and Trindade. The archipelago is the emergent peak of a submarine volcanic chain that rises from the Atlantic Ocean floor approximately 4,000 meters below. Its volcanic rocks date from 1.8 to 12 million years old, include basalts, phonolites, and trachytes, creating dramatic cliff formations, sea stacks, and rocky shorelines.

The archipelago comprises 21 islands and islets, of which the only inhabited one (also called Fernando de Noronha) has a population of ca. 3,200. Its land is heavily altered by human history. Only 5% of the original forest remains, near the isolated Cape Sapata, having been deliberately cleared in the past. Despite this, it retains important marine habitats. The site also contains the only remaining sample of the Insular Atlantic Forest and the only oceanic mangrove in the South Atlantic region. Its waters support spinner dolphins aggregate in the Bay of Dolphins in pods of up to 1,000 individuals, and designated a UNESCO World Heritage Site in 2001, the islands are protected for their marine importance.

Coastal cities, ports and river mouths

Human settlement is concentrated where the land meets the sea. The shoreline is home to major cities such as Rio de Janeiro, Recife, Salvador and Fortaleza, and to the ports that handle much of the country's external trade. Where rivers reach the sea, estuaries form a transition zone between freshwater and marine environments. The Baía de São Marcos in Maranhão is one example, an estuary approximately 100 kilometres (62 mi) long and up to 16 kilometres (9.9 mi) wide. The Mearim is known for its pororoca, or tidal bore. At the southern end of the coast, the long sandy shore of Praia do Cassino (Portuguese for Casino Beach) is the world's longest sea beach, which has a length of 212 km.

Major landforms: highlands, shields and lowlands

The Brazilian Highlands

Much of the central, southern and eastern country sits on an eroded plateau that accounts for more than half of Brazil's land area. Its geography is not uniform. Geographers usually split it into several units, among them an Atlantic Plateau that runs along the east coast, with mountain ranges and forested terrain, and a Southern Plateau covering the south and south-central part of the country, where the soils are notably fertile. Further west, the Parecis Upland lies between Rondônia and Mato Grosso, and the mineral-rich Serra dos Carajás rises in eastern Pará.

The eastern edge of the highlands is a steep drop that is treated separately below. Most of the highland surface is far lower than the peaks of the north: the plateau generally stands at a few hundred to roughly 1,200 metres, with ranges rising above it.

The Guiana Highlands and the Amazon lowland

In the north, the Guiana Highlands form a separate upland region that continues across the borders of Venezuela, Guyana and Suriname. Its terrain combines three elements: a basement of rolling upland, mostly under 300 metres; low mountains between 610 and 914 metres, often along stream divides; and plateaus capped by resistant sandstone. The Brazilian portion is the southern and western part of this complex, and its tepuis, or sandstone table mountains, are among the most distinctive landforms in the region.

The two highland systems are separated by the eastern part of the Amazon lowland. This broad, low depression is the basin through which the Amazon river system drains, and it reaches its widest extent between the Guiana uplands to the north and the Brazilian Highlands to the south. Because it is a lowland, it contrasts sharply with the elevated terrain on either side and shapes the country's drainage pattern.

The Pantanal and the western lowlands

The Pantanal lies in the west and south-west, near the borders with Bolivia and Paraguay. It is a flat, low-lying depression that floods for part of each year, and in contrast to the highlands its relief is minimal. Its flood cycle and ecology are discussed in the section on the wetland system.

Highest elevation

Brazil's highest point is Pico da Neblina, which rises to 2,995.3 metres in the Serra da Neblina, part of the Serra do Imeri at the southern edge of the Guiana Highlands. The summit lies about 687 m (2,254 ft) inside Brazil. The nearby Pico 31 de Março is the second-highest summit, at 2,974 metres, and lies on the Brazil–Venezuela border.

The mountain's recorded height has changed over time. A 1965 measurement put it at 3,014 metres, and a later GPS survey in 2004 gave about 2,994 metres. Pico da Bandeira, between Minas Gerais and Espírito Santo, was long considered the country's highest mountain, until it was found in 1965 that Pico da Neblina was the highest. From the highest peak, elevation falls gradually across the plateaus and then steeply toward the Atlantic coast, a pattern that the escarpment largely determines.

The Great Escarpment

The eastern margin of the highlands is marked by the Great Escarpment, which runs along the central and south Atlantic coasts of Brazil, rising sharply and separating the highland plateau from the coast. It rises from the coastal plain to heights of up to about 2,700 metres. The escarpment's crest also acts as a watershed: apart from the São Francisco River, most streams flow into the central basin rather than to the coast.

The largest segment is the Serra do Mar, which averages some 1,000 meters above sea level and extends from southeastern Minas Gerais to eastern Paraná. In places the range falls almost directly into the sea, producing the sheer faces and outcrops around Rio de Janeiro. Its origin is linked to the opening of the South Atlantic, and it is described as a high-elevation passive margin escarpment. Denudation studies in the Serra do Mar indicate that erosion on the seaward side proceeds faster than on the inland side, which helps drive the gradual retreat of the escarpment toward the interior.

Geological foundations and tectonic history

Precambrian basement

Much of Brazil's surface is underlain by very old, stable continental crust. The Brazilian shield, which is the exposed face of the Precambrian core of South America, is made of cratons and Neoproterozoic orogenic belts. The cratons correspond to internal parts of plates that amalgamated to form West Gondwana by the end of the Neoproterozoic and beginning of the Paleozoic. The belts that surround them record the margins of those plates and the terranes accreted to them. Cratonic blocks are the stable interiors, while the mobile belts between them preserve the collisions that stitched them together.

Three large intracratonic basins, the Amazon, Parnaíba and Paraná, divide the shield into separate areas. The Brazilian craton or shield which is formed of Precambrian rocks is separated into three main areas by the Amazon, Parnaiba, and Paraná intercratonic basins. In the east, the São Francisco craton is exposed in parts of Minas Gerais and Bahia. The Guiana Shield and the Brazilian Shield together make up the Amazonian Craton, Guiana Shield and Brazilian Shield together form the Amazonian Craton.

The age of this basement is spread over a long span. Within the Amazonian Craton, U-Pb and Sm-Nd isotopic data identify eight main Precambrian tectonic provinces in the Craton, with ages ranging from 3.1 to 0.99 Ga. Some of these provinces were generated by accretional, arc-related processes, while others formed by recycling older continental crust. The craton was consolidated by the Transamazonian orogeny, dated at 2.2 to 1.8 Ga, and then bounded by younger fold belts of the Brasiliano cycle, which one compilation dates to 1.1 to 0.5 Ga.

Sedimentary basins

The cratons were not left as bare rock. Over the Phanerozoic, sediment accumulated in intracratonic and continental-margin basins. The Amazon basin which contains a thick sequence of Palaeozoic, Mesozoic, and Cenozoic sediments lies between the central Brazilian shield and the Guiana shield. The sedimentary basins are the record of long periods of subsidence and deposition on the older basement.

The Paraná Basin is the largest example in the south. The Paraná Basin is a intracratonic basin that was formed above the SW portion of the Gondwana paleocontinent and was filled by an important sedimentation episode (ca. 350 Ma) ranging from the Upper Ordovician (450 Ma) to the Upper Cretaceous (65 Ma). Its base contains glacial deposits, since the basal portion is defined by the sedimentary rocks of the Itararé Group, deposited at the end of the Carboniferous in a glacial environment. Its successions also record a variety of environments such as marine, deltaic, lacustrine fluvial, glacial, and desertic ones. Estimates of its thickness differ. One description gives sediments piling up to six kilometer thick in some places, while a Triassic study cites an 8.000 m thick sedimentary package. Immediately before the continents separated, most of the basin's extension was covered with basaltic lava flows.

Breakup of Gondwana and the South Atlantic

The eastern margin of Brazil was shaped by the breakup of Gondwana. The process was gradual: This process occurred in multiple stages over an extended period from the Late Triassic to the Early Cretaceous. The opening of the South Atlantic was the last step of a longer rifting sequence in the southwestern part of the supercontinent. South America began to peel away from Africa starting about 140 to 130 million years ago, in the Early Cretaceous. The Paraná-Etendeka flood basalts correspond to a voluminous and purportedly short magmatic event that erupted during the Early Cretaceous in southwestern Gondwana, predating its breakup.

The early phase of opening was not simple. Early opening of the South Atlantic was oblique, which created basins at high angle to the trend of the ocean on the Argentine margin, and resulted in microplate rotation in NE Brazil. Rift geometry was also controlled by inherited structures. In the Santos and Campos basins, Neocomian rift architecture was strongly influenced by preexisting fabric and structures of the Late Proterozoic (Brasiliano orogeny). Overall, break-up of the Brazilian margin produced a wide variety of structural styles depending on opening kinematics and thermal configuration of the lithosphere.

Eastern margin, plateau erosion and escarpments

The uplift of the eastern highlands followed rifting and was not a single event. This late Cretaceous process is coeval with major flexural subsidence and uplift of the eastern continental margin of Brazil and is associated with the uplift and denudation of the Serra do Mar and Serra da Mantiqueira basement rocks. Thermochronological studies, which date how rocks cooled over time, disagree about how much exhumation followed the opening. One study reports that basement exhumation after South Atlantic opening was minimal in the region. Another notes that low-elevation areas of the passive margin consistently record complex pre-rift cooling histories, while high-elevation areas experienced significant Upper Cretaceous/Paleogene uplift.

Over the long interval since rifting, erosion has stripped the uplifted margin and set the present relief. Differential erosion of rock types of different hardness helped to shape the plateau edges, the escarpments facing the Atlantic, and the mountain ranges behind them. The exact sequence of escarpment retreat and plateau lowering remains a subject of ongoing study.

River systems and drainage basins

Brazil's rivers form several large drainage basins that drain toward different outlets. The Amazon system drains north and east to the Atlantic, the São Francisco and Tocantins systems drain toward the northeast coast, and the La Plata system carries water south and southwest.

The Amazon basin

The Amazon basin is the largest drainage basin in the world, with an area of approximately 7,000,000 square kilometers. The portion of the river's drainage basin in Brazil alone is larger than any other river's basin. The Amazon River and its approximately 1,100 tributaries (tributaries) form a single network that governs much of the region's ecology.

The river's outflow is among the largest of any river. Estimates put its annual discharge at about 6.6 × 10³ km³ of freshwater into the ocean, roughly 17% of global runoff and about 50% of Atlantic runoff. Published figures for its average flow differ between sources, with values around 209,000 and 219,000 cubic metres per second. Its freshwater plume is visible far out to sea, extending some 400 km into the Atlantic. Flow is also strongly seasonal: runoff maxima are observed during May to June, lagging the rainfall by 2 to 3 months. Dams are a growing pressure on this system, since more than a hundred dams have been constructed across the Amazon tributaries, and many more have been proposed.

The La Plata basin

The La Plata basin covers about 3.1 million square kilometres and comprises the Paraná, Paraguay and Uruguay systems, including the whole of Paraguay and important parts of Argentina, Bolivia, Brazil and Uruguay. Its southern Brazilian component is substantial. The Paraná is the basin's main river by discharge, with a mean annual flow of about 17,700 m³/s, and its upper course lies wholly within Brazil. The Paraguay has a different character: unlike many of the other great rivers of the Rio de la Plata Basin, the Paraguay has not been dammed for hydroelectric power generation, so it stays navigable over a long distance. The basin also recharges the Guarani Aquifer, one of the largest continental groundwater reservoirs in the world, through water that infiltrates from the surface. The combined waters meet the Atlantic in the estuary of the Río de la Plata, which is 220 kilometers wide where it opens on the Atlantic Ocean, making it the widest estuary in the world.

The São Francisco and Tocantins systems

The São Francisco River rises in Minas Gerais and flows northeast across the semi-arid interior. Its length is reported differently by different sources, from about 2,900 to roughly 3,000 kilometres, and it is generally treated as the largest river lying entirely within Brazil. The river crosses a semi-arid region of the country which often suffers from droughts, which is why it matters so much for farming and water supply. Its hydroelectric and irrigation infrastructure is substantial: the main centres of power generation for northeastern Brazil are at the Paulo Afonso Falls and the dam impounding the Três Marias Reservoir, and the largest storage dam, near Petrolina and Juàzeiro, impounds the vast Sobradinho Reservoir. The basin is also under strain: siltation in some sections, pollution, and deforestation of riparian forests that protect springs, rivers, and lakes threaten the river.

The Tocantins–Araguaia system lies mostly in central Brazil, almost entirely between the 2ºS and 18ºS parallels. The basin extends to the states of Tocantins and Goiás (58%), Mato Grosso (24%), Pará (13%), Maranhão (4%), in addition to the Federal District (1%). It is the largest hydrographic basin entirely Brazilian. The Tocantins is also one of the most important rivers for river transportation in Brazil.

Seasonal flooding, navigation and hydroelectric power

Seasonal flooding shapes the main channels. The Amazon's width ranges between 4 and 50 kilometers, reaching its maximum width during the wet season, when the banks are flooded. Along the Paraguay, the floodplain is the setting for the Pantanal, discussed in a separate section. Rivers also provide transport, though conditions vary greatly. The Paraguay is navigable for a considerable distance, second only to the Amazon River in terms of navigable length on the continent. By contrast, on the São Francisco river transport is slow and difficult, although the river still links mining districts with road networks.

Hydroelectric generation is a central use of Brazil's rivers. On the São Francisco, the river's hydroelectric potential is its most important resource, and hydroelectric plants at dams on the upper and lower stretches of the river supply power to the coastal cities of Salvador, Aracaju, and Recife. Because turbine output depends on river flow, hydroelectric generation across the country is sensitive to the same seasonal and drought-related variation that governs navigation and flooding.

Pantanal and inland wetlands

Within Brazil's inland landscape, the Pantanal is the most extensive seasonally flooded plain. Its water comes mainly from the surrounding highlands. Rain that falls on those plateaus during the austral summer produces a slow flood wave that travels from north to south along the Paraguay River system, and inundation in the central and southern sectors can peak several months after the rains have fallen Austral summer rainfall in the highlands surrounding the Pantanal and the Upper Paraguay River drainage result in a slow-moving flood pulse which travels from north to south. Due to water retention through floodplain storage processes, inundation of central and southern Pantanal may occur several months after the peak in rainfall. In large parts of the floodplain, water stands for four to eight months a year, at depths from a few centimetres to more than two metres Large sectors of the Pantanal floodplain are submerged from 4 to 8 months each year by water depths from a few centimeters to more than 2 m.

The flood pulse is the main organising force of the wetland's ecosystem. Its annual and multi-year variations determine how much terrestrial and aquatic habitat exists at any time, allow fish to migrate between channels and floodplain, and affect the biogeochemical cycling of the floodplain This hydrological phenomenon is defined by annual and multi-annual cycles of flooding which determine the extent of terrestrial and aquatic habitats, enable the migration of fish and other aquatic species, and influence biogeochemical cycling on the Pantanal's floodplains. The landscape is a patchwork of habitats arranged by elevation. Gallery forests line the rivers and streams, tree-covered ground occupies the higher areas, and the rest is grassland or seasonally flooded grassland The rivers and streams are lined with gallery forests, and other arboreal habitats exist in the more elevated areas. The remainder is either grasslands or seasonally flooded grasslands.

Biological communities are tuned to this rhythm. The regional flora and fauna are adapted to annual water fluctuation. The wetland is also rich in animal life. Its known fauna includes over 650 bird species, 120 mammals, 80 reptiles, and a wide variety of fish and plant life. Waterbirds gather in large numbers during the dry season, when receding water concentrates prey and feeding sites Waterfowl are exceptionally abundant during the dry season. Isotope studies of small floodplain fish show that their carbon sources and trophic position change between the wet and dry seasons, which reflects how the pulse reshapes the food-web over the year.

Human use of the Pantanal is closely tied to the same pulse. Cattle movements in the southern Pantanal follow the flooding, because the water determines when native pastures are available The traditional movement of cattle herds in the southern Pantanal is defined by these seasonal flooding patterns, which determine the availability and quality of native-grass pastures throughout the year. Cattle ranching, farming, fishing and ecotourism all depend on the wetland's services Here, human activities mostly rely on ecosystem services, and include cattle farming, agriculture, professional and recreational fishing, and contemplative ecotourism.

The pulse is vulnerable to changes in land and water use. Hydropower development in the Upper Paraguay basin has expanded quickly: Over the past 20 years, the number of hydropower facilities in the Upper Paraguay River Basin has more than doubled. Dams and waterways can change the timing and extent of flooding, and the disruption of the fundamental seasonal flood pulse by engineering works such as waterways and large dams is increasing. Agricultural land on the surrounding plateaus adds a chemical pressure. Pesticides and herbicides from farms wash downstream, and this runoff has caused fish kills These agricultural lands use large amounts of pesticides and herbicides, which wash downstream into the Pantanal and have caused fish kills. Deforestation on the upland Cerrado, which supplies much of the water, has also been severe Deforestation with the loss of natural habitats and their associated biodiversity in the Pantanal has been drastic during the last decades, particularly in the upland region of the Cerrado plateaus surrounding the flooding plain.

Drought is the most immediate threat to the hydrology. The period from 2019 onward was marked by weak rainy seasons and a prolonged dry spell, and reduced moisture moving in from the Amazon is one of the factors identified In the summers of 2019 and 2020 near surface atmospheric circulation changes are consistent with reduced moisture flow coming from the Amazon region. Water levels on the Paraguay River fell sharply. At Ladário, the river dropped to 203 cm in June 2020, against a mean of 405 cm According to the Brazilian Navy, the water level of the Paraguay River at Ladário dropped to 203 cm in June 2020 (mean of 405 cm). Dry conditions dried out vegetation and set the stage for fires. Drought and fire together damage the wetland's biodiversity and water cycling, and the drying of carbon-rich soils could also release greenhouse gases In carbon-rich systems like the Pantanal, any significant long-term drying could release a great quantity of greenhouse gases, which could advance the pace of global warming in Earth's atmosphere.

Climate zones and seasonality

Brazil extends from about 5°N to 34°S, so most of its territory lies in the tropics, but its climate varies far more than a single "tropical" label suggests. Latitude, altitude, distance from the ocean and the seasonal movement of the Intertropical Convergence Zone together determine how rainfall and temperature are distributed across the country.

Classification schemes

Climatologists often describe Brazil with the Köppen system, which sorts places by their temperature and precipitation patterns. A high-resolution mapping study based on data from roughly 2,950 weather stations placed about 81.4% of the territory in the tropical group (A), about 4.9% in the dry group (B) and about 13.7% in the temperate group (C). The same study recorded twelve climate types, including Af, Am and Aw, and reported some types that had not previously been documented in Brazil. Simpler textbook schemes divide the country into five regions: equatorial, tropical, semi-arid, highland tropical and subtropical. The number of "zones" therefore depends on how much detail a given scheme uses.

Equatorial and tropical climates

In the north, across the central Amazon basin, temperatures stay high all year. Average midday readings in the Amazon typically fall between 27 and 32°C, and the difference between seasons is small, so the wet and dry periods are what distinguish the year. The Amazon rainforest has a dry season of three to five months, and its timing shifts depending on whether a place lies north or south of the equator. Some Amazonian areas receive more than 3,000 mm of rain annually.

Across the central plateau, the climate is tropical with a pronounced wet and dry cycle, classed as Aw in the Köppen system. Rain is concentrated in the warmer months, and winters are markedly dry. Brasília, the planned capital on the plateau, is a typical example, with especially dry winters.

Subtropical south and the highlands

South of the Tropic of Capricorn, which crosses the country near São Paulo, the climate becomes subtropical. The far south has a humid subtropical regime with genuinely cool winters, and the cool upland plains there have a temperate climate in which snowfall occasionally occurs. Temperatures across the country range from about 12°C in the southern highlands during winter to about 40°C in the northeastern interior in summer. Frost is a recurrent winter feature in the higher southern terrain, though it is far less common than in the temperate zones of the Northern Hemisphere.

Rainfall gradient and the semi-arid Northeast

Rainfall declines from the humid west and north toward the northeast, where the sertão, a semi-arid region of low-density ranching, is the driest part of the country. Annual rainfall over most of the sertão ranges from about 500 to 800 mm, and it arrives in a short season. In the western sertão the rainy season usually runs from January to April, while in the eastern sertão it generally falls between March and June. Rainfall is also highly erratic, and droughts recur in cycles averaging about seven years. Temperatures above 40°C are common during the dry months from May to November.

The aridity has a clear atmospheric explanation. Cooler waters in the South Atlantic keep the Intertropical Convergence Zone north of the region for most of the year, which suppresses rain-producing convection over the sertão. The Atlantic-facing rim of the Serra do Mar, by contrast, receives much heavier rain. Long-term rainfall records from the semi-arid northeast show a downward trend of about 7 mm per year, and dry spells have lengthened, which has made drought a growing concern in the region.

Seasonal cycles and classification limits

Because Brazil lies largely in the Southern Hemisphere, its seasons run opposite to those of the Northern Hemisphere, and most of the country's rain falls during the southern summer. In the equatorial north, the annual calendar is organised around wet and dry periods rather than hot and cold ones. Since each classification scheme draws its boundaries differently, descriptions of Brazil's climate zones vary, and the regional labels above should be read as broad guides rather than sharp divisions.

Amazon moisture cycle and regional climate

Evapotranspiration and internal recycling

The Amazon forest helps generate much of the rain that falls on it. Evapotranspiration, which combines evaporation from the forest floor and bodies of water with release of vapour by plants, returns large volumes of water to the air. The share of local rainfall that depends on this internal source varies across the basin. One researcher reports that it can range from almost zero to about 50 per cent, depending on location. Water is also reused as it moves inland: rain falls, is taken up by vegetation and is later released back into the atmosphere, so the same moisture can be cycled several times before it leaves the basin. This recycling is part of the wider water cycle and links the forest to the atmosphere.

Flying rivers and moisture transport

The corridors of moisture that carry this vapour are known as flying rivers. Their movement depends on the weather patterns of the tropics. Trade winds blowing consistently from east to west, together with the recycling of moisture over soils, water bodies and forest, make this long-distance transport possible. Moisture from the Atlantic enters the basin, gains vapour as it crosses the forest, and partly rains out over the forest, while the remainder continues westward until it reaches the Andes, where new rainfall forms. Some of the vapour is channelled by low-level jets, which transfer it to other regions and can travel thousands of kilometres. The term itself dates from about twenty years ago, when a meeting of scientists that included Brazilian climatologist Carlos Nobre coined the term "flying rivers" to describe this flow.

The reach of these flows is wide. Reports list areas including Bolivia, Paraguay and northern Argentina among those that receive moisture from them. The dependence is strongest in the west: forests and non-forest ecosystems of the southwestern Amazon, particularly in Peru and Bolivia, rely on this process for more than 70% of their annual precipitation. The biotic pump hypothesis proposes that forest-generated low pressure helps draw in further Atlantic air, although this mechanism is still debated.

Influence on regional rainfall and agriculture

Because the vapour is transported far from its source, changes in the forest affect rainfall well beyond the basin. Scientists have linked the basin's vapour flows to weather in Brazil's farming regions and the Andean foothills, and they note that disrupting this pump-like system can weaken rainfall far from the forest, intensifying drought risks. Some studies also indicate that deforestation is altering the South American monsoon, increasing the risk of drought in central and southeastern Brazil. Agriculture is exposed in both directions. Dry spells can reduce rainfall for crops, while changes in the wet season can also cause harm, since increased rain over cleared areas could exacerbate wet season flooding in certain deforested regions, harming regional agriculture and the social economy.

Forest cover, rainfall and drought risk

The effect of clearing depends on the season. A study of the Amazon found that deforestation produces reversed precipitation responses across wet and dry seasons. In the wet season, cleared ground can warm and draw in moist air, which increases local rain, whereas in the dry season the deforested area saw a reduction in evaporation from vegetation, causing less rain to fall over a wider region. Because the dry season is when plants need water most, the dry-season effect is the one of greater concern. Deforestation is therefore associated with exacerbating drought conditions during the dry season or in drought years.

Drought and clearing can also reinforce each other. A 2020 study estimated that deforestation has caused an estimated 4% of the recent observed drying, and it found that with every mm of water deficit, deforestation tends to increase by 0.13% per year. The same study concluded that global climate change, not deforestation, is the main driver of recent drying in the Amazon. A 2026 study put the share of change much higher for one area: it attributed between 52% and 72% of the rainfall decline in the southern Amazon Basin over the last four decades to deforestation, with annual precipitation in the area dropping by 8-11% between 1980 and 2019. Modelling work has also found that the response is nonlinear, with the sharpest changes in rainfall and temperature occurring when 10–40% of forest cover is lost. Some model results suggest that once a "critical threshold" is crossed, rainfall could drop by 30-50% over just a few years, although such thresholds remain uncertain.

Terrestrial biomes and biodiversity

Brazil's land area is conventionally divided into six terrestrial biomes, defined by their climate, vegetation and characteristic fauna: Amazonia, the Cerrado, the Caatinga, the Pantanal, the Atlantic Forest and the Pampa. The Amazonia is by far the largest, occupying about 49 per cent of the national territory. The Cerrado, a savanna mosaic on the central plateaus, is the second largest, covering about a quarter of the country. The Caatinga occupies the semi-arid northeast and is recorded as lying entirely within Brazilian territory, at roughly 844,000 square kilometres. The Atlantic Forest follows the eastern coast, the Pantanal occupies the western lowland basin, and the Pampa forms the grasslands of the far south in Rio Grande do Sul. The boundaries between these units, particularly between the Amazon and the Cerrado, remain a subject of debate.

Species richness and endemism

Brazil is one of the world's 17 megadiverse countries identified by Conservation International in 1998, and it ranks at the top of that group. The Convention on Biological Diversity reports at least 103,870 animal species and 43,020 plant species known in the country, which together make up about 70 per cent of the world's catalogued animal and plant species. Brazil's share of global biodiversity is commonly estimated at 15 to 20 per cent. Brazil is also ranked second only to Indonesia for species endemism, meaning the number of species found nowhere else. Because the known total is still growing, with an average of about 700 new animal species described each year, these figures are best understood as lower bounds, and estimates differ from one source to another.

Biodiversity hotspots: the Atlantic Forest and the Cerrado

Brazil contains two of the world's biodiversity hotspots: the Atlantic Forest and the Cerrado. The hotspot concept, developed by Norman Myers and colleagues, identifies regions with at least 1,500 endemic plant species that have lost at least 70 per cent of their original natural vegetation. The Cerrado is estimated to hold roughly 12,000 known plant species, with more than a third of them endemic, and at least 2,373 vertebrate species, about one-fifth of which are endemic. Endemism is particularly high among plants and ecosystem-dependent groups such as amphibians and reptiles. Because many endemics have small ranges, habitat conversion in these hotspots can threaten whole populations at once, a concern discussed further in deforestation and habitat fragmentation.

Adaptations to seasonal dryness

The Caatinga, whose name is usually translated from Tupi as "white forest", has a strongly seasonal climate in which many plants lose their leaves during the dry months. Its flora includes spiny shrubs, cacti and other succulents, and palms such as carnauba and buriti. Its animal communities are also distinctive, with records of about 591 bird species, 178 mammal species and 241 fish species. The Caatinga is the home of the Spix's macaw, a bird that is among the most threatened in Brazil.

The Cerrado is also adapted to a marked wet-dry cycle, with fire forming an important part of its ecology. Many of its woody plants have thick, corky bark that protects them from flames, and their roots and underground stems allow them to resprout after burning. Botanical studies have documented that a considerable share of the species in a single hectare of southern Cerrado possess xylopodia, woody underground organs that store resources and regenerate vegetation after fire. These traits show how the photosynthetic growth of the Cerrado depends on regular, though not uncontrolled, burning. Fire regimes that differ from the historical pattern, in combination with clearing for agriculture, can alter this balance and drive changes in species composition.

Threats to species and habitats

Brazil's biodiversity is under pressure from clearing, fragmentation and degradation, which in turn raise the risk of extinction. Research on the Cerrado has reported that its deforestation rates have at times exceeded those of the Amazon, and that only a small share of its area is under legal protection, with a considerable proportion of threatened and endemic species falling outside protected areas. Responses to these pressures include conservation planning under the Convention on Biological Diversity and its Kunming-Montreal Global Biodiversity Framework, as well as ecological restoration programmes.

Soils, agriculture and land use

Brazil's agricultural potential depends less on total land area than on the chemistry and physical condition of its soils. Across the central plateaus, much of the land is covered by highly weathered oxisols, known in Portuguese as latossolos. Latosols present good rainfall drainage, low cation exchange capacity and nutrient deficiency. These soils are easy to correct, which explains why they have become the main base for crop production in the Cerrado. Their acidity is a central problem. Aluminium toxicity and low phosphorus availability restrict root growth, so field crops do not grow well in the absence of liming and fertilization. Lime has been the key tool: liming facilitated the agricultural expansion in the highly acidic Oxisols of the Brazilian Cerrado. Surveys of pasture soils show the same pattern, with about 90% of sampled soils having low or very low phosphorus availability.

The Cerrado, a savanna covering roughly 205 million hectares in the centre of the country, has been the main frontier of conversion. Around half of its native vegetation has been cleared. One national mapping gives the Brazilian Cerrado has lost 81 Mha (50.6 percent) of its native vegetation cover. Soybeans are the most visible driver. Between 2003 and 2014, soy replaced at least 1.3 million hectares of native vegetation, and in parts of the northern Cerrado direct soy conversion accounted for a large share of annual clearing. In the Matopiba region of Maranhão, Tocantins, Piauí and Bahia, the soybean area increased by 253% between 2000 and 2014. Clearing also changes the water balance. Measurements in an Amazonian frontier catchment found that evapotranspiration was lower under pasture than under native Cerrado, and that runoff was higher, which means that conversion weakens the moisture recycling on which dry-season flows depend. This links the soil question to evapotranspiration and to the hydrology of drainage basins.

Livestock grazing remains the dominant land use across much of the country. Pasture covered about 164 million hectares in a recent national mapping, approximately 60% of the agricultural area. Pasture is also the usual next step after forest clearing. Nationally, most cleared land has been or still is used as pasture, and the Amazon has seen large pasture growth over the past two decades. In the Cerrado and Atlantic Forest, by contrast, pasture has declined, with some former grazing land converted to temporary crops. Crop expansion has increasingly taken place on land that was already pasture: one analysis of national cropland growth from 2000 to 2014 found that pasture conversion accounted for nearly 79% of the new cropland. Pasture quality is also variable. The share of severely degraded pasture fell from about 29% of pastures in 2000 to about 14% in more recent mapping, which indicates that a large amount of grazing land is in poor condition and could be recovered for cultivation or restored.

Land tenure shapes how these pressures play out. The Cerrado is overwhelmingly on private land, so legal rules on private holdings are a major instrument of protection. Brazil's Forest Code requires private landholders to keep a minimum share of their property under native vegetation as a Legal Reserve. Studies of Cerrado clearing have found that a relatively small share of conversion exceeded these limits, but that soy farms violated the Forest Code at a much higher rate than other farms. Protected areas and Indigenous territories also determine where clearing can legally occur, and their boundaries are a continuing point of conflict between conservation and agricultural expansion. In practice, decisions about soils, crops, pasture and land ownership are made together, and they determine how much of the remaining native vegetation is retained.

Mineral, energy and water resources

Brazil's mineral wealth is led by iron ore. The mining company Vale operates three systems in Brazil for producing and distributing iron ore, which we refer to as the Northern, Southeastern, Southern Systems. Vale reported iron ore production of 336,075 thousand metric tons in 2025, a figure that includes third-party purchases. Its largest single mine-plant, S11D, lies in the Northern System, where a planned expansion adds 20 million tonnes of annual capacity. Iron ore is also the core of the company's business: as of September 2025, ferrous minerals (primarily iron ore and pellets) accounted for around 80% of the company's net revenue, and China, as the largest steel producer globally, remains the main market, accounting for more than 50% of revenue since 2020. Vale's Brazilian operations also produce nickel and copper, which are sold as energy-transition metals. Export prices for iron ore have been comparatively stable, traversing within a $96–$110/t range since late 2024.

Brazil's petroleum sector has expanded rapidly since the discovery of the pre-salt layer. The first discovery there took place in 2006, and the 300 thousand bpd production was achieved just 7 years following the first oil discovery in the pre-salt layer. The pre-salt fields, which lie offshore in the Santos and Campos basins beneath a thick salt layer, have since become the core of national output. In February 2026, production reached 5.304 million barrels of oil equivalent per day (boe/d), a measure that includes both oil and natural gas, and the pre-salt layer accounted for 80.2 percent of Brazilian production. Over the past two decades, Brazil has substantially expanded its oil production to become Central and South America's biggest producer, driven by its pre-salt developments. Much of the activity is operated by the state company Petrobras. The legal framework changed in 1997, when the Petroleum Investment Law was adopted, establishing a legal and regulatory framework, and liberalizing oil production. Offshore development is technically demanding, and the expansion of fossil fuel output sits alongside a growing role for renewable energy in the power sector.

Hydroelectric power is the central element of Brazil's electricity supply, though its share has declined over time. Hydro accounted for 52% of generation in 2025. That is a major change from the early 2000s, when hydro supplied roughly 90% of electricity. Earlier figures are higher, with the U.S. Energy Information Administration reporting that hydropower supplied 66% of its electricity demand in 2020. The figures differ because of the year and the methodology used, so the exact share should be read with care. Brazil's dams are concentrated in the north, while demand is concentrated along the eastern coast, which requires long transmission links. This dependence has a cost. The dependence on hydropower makes Brazil vulnerable to power supply shortages in drought years, as was demonstrated by the 2001–2002 energy crisis. A later episode followed the three-year drought that was exacerbated by the strong 2015–16 El Niño event, which made it the worst water shortage event in the region in 35 years. The largest plant is Itaipu on the Paraná River, which is shared with Paraguay. Tucuruí on the Tocantins River, in the state of Pará, is another major installation, and the dam was completed in 1984 and has a total generating capacity of 8,370 megawatts. Brazil's large hydroelectric reservoirs also provide a form of water storage that the system relies on in dry seasons, which is why river flow is treated as a strategic resource. The electricity system is also expanding wind and solar capacity, which together made up 27% of the national mix in 2025.

Biofuels occupy a distinct place in the energy system. Brazil's ethanol programme is based on sugarcane, and the country has produced ethanol from it since the 1970s, when the government sought alternatives to imported petroleum after the oil shocks of that decade. Ethanol is blended into gasoline and is also sold as a fuel on its own, and flex-fuel vehicles that run on either fuel are common on the national market. This reduces the country's dependence on imported gasoline, while the sugarcane sector also competes with food production for land in the Centre-South. Water resources add a further dimension. Brazil holds large groundwater reserves, including the transboundary aquifer system beneath the Paraná and Paraguay basins, which supply urban and agricultural users and are less exposed to drought than surface rivers.

Deforestation, fire and environmental change

Forest and savanna loss in Brazil is driven mainly by agricultural expansion, and the pattern differs between the Amazon and the Cerrado. In the Amazon, pasture creation has been the largest single use of cleared land. One breakdown of direct clearing between 2001 and 2013 assigned about 63% of it to cattle ranching, and a separate estimate puts ranching at roughly 80% of current Amazon clearing. Soy expansion adds further pressure. Soybean fields often replace former pasture, but the soy frontier also clears forest directly, and planted area has at times more than tripled. Modelling work suggests that idle pastureland could absorb more than a third of additional soy output without new clearing. Illegality is also widespread: some estimates suggest that as much as 90% of clearing may be unlawful, with ranchers, loggers, miners and land speculators profiting from public land.

The Cerrado

The Cerrado has become the more intense frontier in recent years. Roughly half of its native vegetation cover has been lost, at a rate about three times that of the Amazon. In 2023, MapBiomas recorded more than 1.11 million hectares cleared in the Cerrado, a 68% increase, which exceeded Amazon clearing for the first time in the series that began in 2019. INPE's figures give a smaller rise of about 45% for the same year, so the two sources differ on the scale of the increase. Clearing is concentrated in the Matopiba states of Maranhão, Tocantins, Piauí and Bahia, which accounted for about 85% of Cerrado deforestation in early 2023. Most of the loss occurred on private properties, and approximately three-quarters of the biome is privately owned. Analysts link the expansion of soy in the Cerrado to strong Chinese demand for the crop.

Recent trends

Amazon clearing has fallen since its peak. Annual clearing in 2023 was 454,300 hectares, 62.2% below 2022. Satellite alerts for August 2023 to July 2024 recorded the largest reduction since 2016, when the current surveillance method began. Preliminary INPE estimates reported in 2025 showed Cerrado clearing falling 11.5% to 7,235 square kilometres, a six-year low. MapBiomas attributes 97% of Brazilian deforestation to agricultural expansion, which indicates that the reductions depend on the continued enforcement and market conditions rather than on a change in the underlying drivers.

Fire and drought

Fire is both a tool for clearing and a threat to standing forest. Ranchers and farmers use it to remove vegetation, and fires set for clearing can escape into adjacent forest. Once canopy cover opens, forest edges dry out and become more flammable, so fire can degrade forest that is not directly cut. Drought intensifies this process, because prolonged dry seasons leave vegetation and litter more combustible. In 2024, the Global Wildfire Information System detected 62,131 fires that burned about 46 million hectares in the Pantanal, the Amazon and the Cerrado, with particular concentration in the interior of São Paulo state.

Satellite monitoring

Two INPE systems are central to tracking clearing. PRODES, which dates to 1988, uses Landsat-class imagery to produce an annual, consolidated rate for the Legal Amazon, and INPE states its accuracy at around 95%. Its minimum mapping unit is 6.25 hectares, so smaller patches are not reported. DETER, created in 2004, uses daily MODIS observations at 250-metre resolution to issue near-real-time alerts, which IBAMA uses to direct inspections; its resolution means it can identify clearing only above about 25 hectares. Cloud cover limits both systems over the Amazon. Monitoring of the Cerrado has been less secure, because it has depended on external funding rather than the federal budget, and funding lapsed in 2020. Changes in methods and data availability therefore affect how the trends can be compared across years.

Climate change impacts

Rising temperatures, more frequent drought and more intense rainfall events are expected to compound the effects of clearing and fire on ecosystems, biodiversity and communities. Warmer, drier conditions can shift the boundaries of forest and savanna, while heavy rainfall can increase erosion and flooding in deforested landscapes. These pressures are strongest where habitat fragmentation has already reduced the capacity of species to move, and they are closely tied to climate change trends across the continent.

Population distribution and urban geography

Brazil's population is large but very unevenly spread. The demographic census of 2022 counted 203 million residents, and the national average density of about 25/km² (2025 est.) hides sharp contrasts. Most of the people live in a band along the Atlantic coast and in the southeast, while the Amazon, the Centre-West and much of the interior hold large areas with few inhabitants. Growth has also slowed: the national rate fell to about 0.52% a year between 2010 and 2022, against 1.17% in the previous decade.

São Paulo is the demographic core of the country. Its state had 44,411,238 inhabitants in 2022, and the metropolitan region of São Paulo, with about 21.7 million people in a 2019 estimate, is the largest urban agglomeration in the country. The megalopolis includes the metropolitan regions of Rio de Janeiro and São Paulo and extends from Campos dos Goytacazes in northern Rio de Janeiro state to Campinas in the interior of São Paulo state. About 42 million people live in this region, representing 23% of Brazil's total population. Rio de Janeiro's metropolitan region, at about 12.8 million in 2019, is the second-largest in the country, and it sits at the centre of this corridor. Beyond the southeast, the metropolitan areas of Belo Horizonte, Brasília, Porto Alegre, Fortaleza, Recife and Salvador each held between roughly 3.9 and 6 million people in the same estimates, which means the urban system is spread across all five macro-regions rather than concentrated in one place.

Urbanization is now the defining feature of settlement. One UN-based estimate puts the share of Brazilians living in urban areas at 89 per cent, and projections suggest that by 2050 approximately 90% of the Brazilian population will reside in urban areas. Growth has been most visible in the largest metropolises, but the rise of medium-sized cities in the interior is also significant. The gap between the rapid growth of the largest cities and the slower expansion elsewhere has created a pattern in which infrastructure, housing and services lag behind the people who arrive.

The Amazon shows a different and in some ways more dramatic pattern. The region's population rose from around 8.2 million in 1970 to 24 million in 2010, and this growth was largely urban. In the Legal Amazon, the urban population almost tripled between 1980 and 2000, from 4.7 million (45% of the region's population) to 13.7 million (69%). Manaus illustrates the speed of this change: its population went from about 314,000 inhabitants to approximately two million inhabitants between 1970 to 2010. Smaller frontier towns have also grown quickly, and 10 of 19 Brazilian cities that have doubled in population over the last decade are in the Amazon, according to a report on the census results. Settlement along roads is closely tied to forest loss, as about 80% of the deforested areas are within 30 km of official roads in the Brazilian Amazon (see deforestation).

The growth of cities creates environmental pressures that are visible in the urban core itself. Sealed surfaces reduce soil permeability that, consequently, can increase the occurrence of floods, and rising surface and air temperatures produce the so-called urban heat island effect. In water-dependent cities, supply is a growing concern: a study of Belém projects a large reduction in the volume of precipitation in the months of august to November, and combined with population growth, this could lead to a situation of water scarcity until the end of the century. Informal settlement is another dimension of the problem. Belém, which will host COP 30 next year, leads the way with 57.2 per cent of the population living in slums, followed by Manaus, with 55.8 per cent. Amazonian floodplains add a further layer of risk, since more than 1.5 million inhabitants occupy the floodplains along the Amazon River.

Taken together, these patterns mean that the distribution of people in Brazil is shaped as much by the speed of urban growth as by the geography of the land itself. The contrast between the dense southeastern metropolises and the fast-growing frontier cities of the north is a central issue in planning water supply, infrastructure and sanitation across the country.

Administrative regions and economic geography

Brazil is a federation of 26 states and the Federal District, which together form 27 federative units. State governments, each with its own executive, legislature and constitution, hold wide powers in areas such as schooling, public security and taxation. The Federal District, where the capital Brasília is located, has a hybrid status: it is legally equivalent to a state but contains administrative regions rather than municipalities.

For statistical and planning purposes, the Brazilian Institute of Geography and Statistics (IBGE) groups the states into five macro-regions: North, Northeast, Central-West, Southeast and South. These groupings follow state boundaries and were drawn on the basis of physical, political, social and economic similarities. They are not governing bodies in their own right. Their main role is to organise statistics, government funding and development programmes. The North is by far the largest region by area, covering roughly 45 per cent of the national territory, but its population is much smaller than its size would suggest, while the Southeast is the most populous region by a wide margin.

Economic activity is strongly concentrated in the Southeast and, to a lesser extent, the South. IBGE data show that the Southeast produced 57.4 per cent of national GDP in 2002 and 53.0 per cent in 2023. Its decline was driven mainly by São Paulo and Rio de Janeiro, whose shares fell by 3.4 and 1.7 percentage points over that period. Over the same twenty years, the Central-West and North posted the largest relative gains, adding 2.0 and 1.1 percentage points respectively, with Mato Grosso recording the biggest single increase. Some economists read this as gradual convergence, but the gap remains large. Industry, finance, higher education and specialised services are still concentrated in the Southeast and South, particularly in the metropolitan areas of São Paulo and Rio de Janeiro.

Regional differences extend beyond output to income and living conditions. A study of IBGE household survey data from 2007 to 2015 found that the share of income held by the top 1 per cent ranged from about 22 per cent in the North and South to about 24 per cent in the Southeast in 2018, while the bottom 40 per cent received only about 7 per cent of net income in the Northeast, compared with around 13 per cent in the South. Composite measures of human capital show a similar pattern: the World Bank reports scores near 40 per cent in the North and Northeast against about 70 per cent in the Southeast. Nationally, IBGE recorded a record low Gini coefficient of 0.506 in 2024, a sign of improvement, although Brazil's inequality remains high by regional and global standards.

State capitals serve as the principal regional centres for government, trade and services. They host state administrations, courts, universities, hospitals, banks and commercial headquarters, and they draw inflows of people and capital from surrounding municipalities. Some capitals also function as logistics hubs. Manaus, for example, anchors the Amazon's industrial free-trade zone, while Belém and Salvador perform similar roles for their own hinterlands. The reach of these centres depends heavily on the quality of local infrastructure, so differences between states are often reflected in the density of paved roads, rail lines and ports. The Southeast and South have the most developed transport networks, whereas much of the North depends on rivers and air links, and the Central-West's agricultural frontier has relied on newer highways to reach export ports.

Land use also differs sharply by region. The Central-West and parts of the North are dominated by large-scale crop farming and cattle ranching, the Northeast contains extensive semi-arid zones with smaller and more fragile farms, and the South combines intensive family-scale agriculture with urban-industrial zones. These contrasts shape the distribution of employment, public investment and social services, and they remain central to debates over how to reduce regional disparities without undermining the economic dynamism of the wealthier states.

Transport, infrastructure and connectivity

Rivers as freight corridors

Across the northern half of Brazil, rivers carry much of the heavy freight that roads and rails cannot easily serve. In the Amazon region, waterway navigation is one of the only means of reaching every municipality. The three main Amazonian waterways, the Solimões-Amazonas, Madeira and Tocantins-Araguaia, moved 44.175 million tons in 2019, an increase of 235% over the volume recorded ten years earlier. Soy and cereals make up most of the cargo transported on the Amazon, and the export of grain from the interior is the main driver of this growth. In 2022 the Amazonian watershed carried 55% of the whole country's throughput through internal waterways.

The river system also has clear limits. Its main stem is naturally navigable and its lower reaches can take deep-draft ships, but many tributaries are not. The Tapajós, for example, is technically challenging, with multiple rapids that limit its navigability during twelve months of the year. Making such routes reliable usually requires engineering works. The Tocantins-Araguaia project, one of the government's priorities, calls for more than 2,000 kilometers of navigable channels in these two rivers, and it depends on dredging, rock removal, construction of dams and locks, and port expansion. Drought adds a further risk: the 2023 drought was estimated to have reduced the transportation capacity of the rivers by 40 to 50%. Lower freight costs are the main economic argument for river transport. One Brazilian institute estimated that fluvial transportation was about 35 per cent less expensive when compared to railways over a standard distance of 1,000 kilometres.

Highways and the opening of the Amazon interior

Roads have reshaped the Amazon more than rivers have. The BR-364 links São Paulo with Acre, and it was opened in the 1960s and paved in the 1980s. It has brought economic development and population growth, as well as an unprecedented process of deforestation in the Amazon basin states of Rondônia and Acre. The BR-319 between Manaus and Porto Velho shows the fragility of such routes: it was opened by the military government in 1973 but soon deteriorated, and by 1988 was impassable.

The BR-163 is the clearest case of a highway built as an export corridor. It was established in the 1970s during the Programa de Integração Nacional (PIN), but the northern sector soon fell into a state of disrepair. In the early 2000s the federal government improved its northern section to create an export corridor for the rapidly expanding soy industry of central Mato Grosso. Even after R$ 1.5 billion expended on highway improvements between 2005 and 2015, a stretch remained impassable in the rainy season. The road was fully paved in 2019 and conceded to the private sector in 2022. Grain traders responded by building terminals at Miritituba on the Tapajós, where barges transfer cargo to ocean-going ships on the Amazon. Environmental researchers have repeatedly pointed to a link between road paving and forest loss, and studies show a strong correlation between opening and paving of highways and deforestation. These dynamics are discussed further in the section on deforestation.

Atlantic ports and international trade

Most of Brazil's overseas trade passes through ports on the Atlantic coast, and the largest of them is Santos in São Paulo state. The port of Santos is Brazil's largest port providing exports and imports to and from all over the world. Its main exports include coffee, sugar, and soy. In 2024 the port handled 179.8 million tonnes of cargo, and exports reached 131.3 million tons, growing 1.0% year-over-year, while imports surged by 12.1% to 48.5 million tons. The port operates as a multimodal hub, with more than 13 kilometers of quays and 55 terminals.

Santos also shows the strain on coastal logistics. Because the port works around the clock, there is a lot of congestion on the roads and railways. Its access road has limited capacity: there is only a three-lane road with two of those lanes for entry to the port and one for exiting. Access to the port is therefore a constant planning concern for the surrounding metropolitan region and for the rail network that feeds it.

Brasília and the logic of an interior capital

Brasília was conceived as a capital in the interior rather than on the coast. A clause in the 1891 republican constitution anticipated moving the capital inland, and a survey mission in 1892 studied the plateau. The city was built on the Central Plateau, at an elevation of over 1,000 metres, and was inaugurated on 21 April 1960 under President Juscelino Kubitschek. Lúcio Costa designed its urban plan and Oscar Niemeyer its principal public buildings. The project aimed to shift political power away from Rio de Janeiro and to draw population and investment toward the centre-west and the Amazon frontier, a policy often summarised as the "March to the West".

Its location was therefore a transport decision as much as a political one. New roads were built to link the capital with the coast and the north, such as the Belém–Brasília highway, so that the interior could be reached by land from the existing urban centres of the southeast and northeast. The result was a road network radiating from a planned city, which later became the basis for regional urbanization in the centre-west.

Borders, neighbours and regional relations

Land frontiers

Brazil's land frontier totals about 16,885 km, and the world's third longest land border, after those of China and Russia, is among the largest of any state. Ten neighbours share a boundary with it: nine countries of South America, and the French Department of Guiana. The two South American states without a shared frontier are Chile and Ecuador.

The boundary with Bolivia, about 3,423 km long, is Latin America's second-longest border. It begins from the Pantanal and ends in the Amazon forest, so it crosses wetland, savanna and rainforest. The frontier with Peru, roughly 2,995 km long, is the line, located in the Amazon rainforest, that limits the territories of Brazil and Peru, and its present shape dates from a 1909 treaty. The boundary with Guyana, at about 1,605 km, runs through marshy country where Spanish and Portuguese settlement was slow to arrive, which left the coasts and rivers open to British and Dutch colonists. The line with French Guiana, about 730 km long, is crossed by only one road: the Oyapock River Bridge, the only bridge crossing the border, which connects the towns of Saint-Georges and Oiapoque.

Amazon frontier and security

Brazil contains roughly three-fifths of the Amazon basin. The Amazon spans nine Latin American countries, and about 60% lies in Brazil. Because the forest is so large and sparsely policed, its frontier regions have become corridors for crime. Brazilian criminal groups have struck partnerships with Colombian guerrilla factions and Peruvian drug trafficking outfits. Their revenues come from a mix of activities, from drug production to illegal logging and mining, which include growing coca and processing it into cocaine to logging, dredging for gold and fishing in protected areas.

Figures from civil-society research give a sense of the scale, though they come from advocacy and think-tank studies rather than official counts. A 2025 report by a conservation foundation and the Igarapé Institute found at least 17 armed groups operating across 69% of the northwestern Amazon. In Brazil, 2,576 illegal mining sites were recorded, 95% of which remain active. A Brazilian Forum on Public Security study found that criminal organizations are present in at least 178 of the Amazon's 772 municipalities. In the tri-border zone, the Brazilian town of Tabatinga, facing Leticia across the frontier, registered a staggering homicide rate of 95.9 per 100,000 people in 2023.

Official responses have focused on policing the frontier and on cooperation between states. Governments are expanding satellite monitoring, strengthening environmental agencies, targeting illegal mining infrastructure, and improving cross-border cooperation.

South Atlantic and Africa

Brazil's Atlantic seaboard runs for roughly 7,400 km, and that coast gives the country its maritime relations with Africa. In 1986, the countries on the east coast of South America and the west coast of Africa established the South Atlantic Peace and Cooperation Zone, known as ZOPACAS. Since 2016, Brazil's national and naval strategic plans have focused on ZOPACAS as a tool to counter extra-regional interference and organised crime, particularly in the Gulf of Guinea. Piracy and armed robbery at sea threaten freedom of navigation and international trade in the Gulf of Guinea. The Brazilian navy has responded with the 'Guinex' operations, which have been taking place since 2021, which aim to build trust with West African navies. One such operation, Guinex-II, ran from June 18 to August 20 in the Gulf of Guinea, with exercises at sea and in ports, and participants included Cameroon, Cape Verde, Ivory Coast, Nigeria, and São Tomé and Príncipe.

Brazil's engagement with Africa has also grown as a matter of policy. There has been a shift in Brazil's foreign policy since January 2023 as the country seeks to increase its influence on the international arena. The economic stakes are considerable: one academic study holds that 95% of the country's international trade is carried out through South Atlantic oceanic routes.

Regional integration

Brazil takes part in several multilateral groupings. This relationship is facilitated through regional organisations such as the Union of South American Nations (UNASUR) and the South Atlantic Peace and Cooperation Zone (ZOPACAS), and is further enhanced by Brazil's membership in the Community of Portuguese Language Countries (CPLP) and BRICS. Its most important trade arrangement within South America is Mercosur, founded in 1991 by Argentina, Brazil, Paraguay and Uruguay. Bolivia became a full member in 2024, while Venezuela's membership has been suspended since 2016. Bilateral ties are also significant at the frontier: Brazil and Guyana have strong diplomatic ties that stretch way back to the 1960's. Due to a policy put in place by the government of Brazil, the relationship between the two nations has improved significantly.

Mapping, surveying and the study of Brazilian geography

Knowledge of Brazil's territory began with Portuguese voyages in the early sixteenth century, but Lisbon's attention after 1500 was directed mainly toward its African and Indian possessions, and early expeditions to the new coast were few in number. Under the Treaty of Tordesillas of 1494, the Portuguese initially paid little attention to Brazilian lands, which left the colony with low occupation, weak protection, thin environmental knowledge and far fewer maps than other explored regions Faced with new territorial delimitations and the challenges established by the Treaty of Tordesillas in 1494, Portugal initially paid little attention to Brazilian lands, resulting in low occupation, protection, and environmental knowledge, in addition to negative disproportionality in the production of maps when compared to other explored regions. Despite this, the name "Brazil" had entered cartography by 1511 The name Brazil, which first appears on maps from 1511, may derive from 'Bresel wood', and Lopo Homem produced a chart of the coast around 1519 Portuguese map by Lopo Homem (c. 1519) showing the coast of Brazil and natives extracting brazilwood.

During the Iberian Union, Portugal's cartographic position weakened relative to northwestern European rivals From 1580 to 1640, Portugal was under Spanish dominion, facing competition in cartography and nautical science from northwest European powers, particularly England and the Low Countries. Brazilian maps nonetheless flourished in the seventeenth century. João Teixeira Albernaz I, the most prolific Portuguese cartographer of that century, produced nineteen atlases containing 215 maps , and his work recorded the colony's exploration, especially in Brazil He stands out for the variety of themes, which record the progress of maritime and land exploration, particularly in the Portuguese colony of Brazil. Later, a detailed 1703 map by Guillaume Delisle circulated widely in Europe Map by Guillaume Delisle — 1703: detailed map of Brazilian territory widely used in Europe., and maps were attached to the 1750 Treaty of Madrid, which redefined the Portuguese–Spanish frontier Maps of the Treaty of Madrid — 1750: maps used in the redefinition of Portuguese-Spanish borders.

Historical maps are also used as evidence for environmental change. In a study of coastal landforms in northeastern Brazil, of fifty maps gathered from different origins, three were analysed: a French sketch and two Portuguese maps Fifty maps of different origins were collected, three of which were used: a French sketch and two Portuguese maps.. The differing depictions of islands and coastal features were read as possibly indicating an advance in local sea level, which connects early cartography to sea-level-rise research The cartographies presented particularities for revealing a possible advance in the local sea level.

Mapping of the interior intensified in the early nineteenth century. Manuscript maps of Brazil produced outside military or survey expeditions were rare in that period, which makes the eleven aerial-view maps of Brazil's captaincies in the Guia by Sant'Anna particularly notable, since they record rivers, mountain ranges, settlements, sugar mills and roads. Scholars link this surge in interior mapping to territorial ambition, since such maps served as a proxy for territorial conquest and implicit civilizing. A later map of the Empire, drawn by Conrado Jacob Niemeyer after an earlier chart by Duarte da Ponte Ribeiro, shows how diplomats also took part in cartographic work Ponte Ribeiro became an important diplomat during the early years of Brazilian independence, representing his country in Portugal, Mexico, Peru, Bolivia, and Argentina.

The most influential classification of Brazilian landscapes came from the geographer Aziz Ab'Sáber, who was born in 1924 and died in 2012 Aziz Nacib Ab'Sáber was a geographer and one of Brazil's most respected scientists, honored with the highest awards of Brazilian science in geography, geology, ecology and archaeology. His approach grouped landscapes into morphoclimatic domains, defined as combinations of relief, climate and vegetation Such classification is based in landscape domains which, synthetically, can be defined as the combination of natural elements groups—basically relief, climate, and vegetation. The classification was set out in his 1967 article, which framed the country as a set of core areas separated by transition zones It presents homogeneous central areas (core areas) and extensive transition zones between them. The six domains he identified include the forested Amazonian lowlands, the semi-arid Northeastern depressions, the forested "sea of hills" of the Atlantic southeast, the central Cerrado plateaus, the Araucaria plateaus of the south and the prairies of Rio Grande do Sul Existem seis grandes domínios paisagísticos e macroecológicos no território brasileiro. Later work modified this scheme by replacing the domain category with landscape units and by individualising some transitional zones the substitution of the category analyzes morpho-climate and phytogeography domains for landscape units. Besides, the number of units is extended.

Official surveying and statistics were institutionalised in the 1930s. The Brazilian Institute of Geography and Statistics was created in 1936 as the National Institute of Statistics, and its founder was the statistician Mário Augusto Teixeira de Freitas The IBGE is a public institute created in 1936 under the name National Institute of Statistics. Its founder and chief proponent was statistician Mário Augusto Teixeira de Freitas. The agency was installed on 29 May 1936, and geography was added to its remit within months Geography was added to the INE within a few months after its establishment.. The name was changed in 1938 by decree On January 26, 1938, Getúlio Vargas signed the decree that gave the office the name of Brazilian Institute of Geography and Statistics (IBGE).. Before this, the country had lacked an organised record of the actual size of its territory the country navigated the early decades of the 20th century without the benefit of an organized collection of information that depicted the actual size of its territory. Today the agency is the main Brazilian body for statistical, geographic, cartographic, geodetic and environmental information, and it runs the national census The IBGE operates the national census decennially.

In recent decades, satellite imagery, remote sensing and geographic information systems have become the main tools for producing and updating maps of Brazil's territory, allowing large areas, including the Amazon, to be surveyed and compared over time.

Open questions and scientific debates

Several unresolved questions about Brazil's landscapes concern how its ecosystems may respond to deforestation, drought and warming. The most discussed is whether the Amazon could approach a tipping point. Researchers describe such a point as a threshold beyond which a small disturbance can set off an abrupt change in the state of an ecosystem, and in the Amazon that would mean a shift from closed rainforest to more open, degraded vegetation. New research has identified the potential thresholds of these stressors, showing where their combined effects could produce a 'tipping point', and the stressors in question are warming, regional rainfall changes and clearing. A 2026 study in Nature estimates that a tipping point could be reached at a global warming of 1.5 to 1.9 °C combined with 22–28 percent deforestation, with more than two-thirds of the rainforest becoming degraded or transitioning to a savanna ecosystem. Because roughly 17–18 percent of the Amazon has already been cleared, the margin is narrowing. The same authors point out that the threshold moves with clearing: the more deforestation happens, the lower this global warming threshold becomes, according to one co-author. Other studies are less pessimistic. A separate 2026 review of the forest's recovery found that the Amazon can regrow quickly after disturbance, although deforestation and warming could trigger a system-wide tipping point in the next 15 years. Research on the hydrological cycle has also argued that in the southern and eastern Amazon, severe atmospheric desiccation cannot be offset by moisture from the Atlantic, which would make some change irreversible. Whether these thresholds are reached, and when, remains debated, and the outcome depends heavily on future forest loss and emissions.

Amazonian dark earths

The origin and extent of Amazonian dark earths (terra preta) are also uncertain. These soils are widely regarded as the product of people: almost all researchers agree that they were created by people, and they are anthropogenic soils called terra preta de índio in Brazil, created by indigenous people hundreds, even thousands, of years ago. Dating places their formation in the pre-Columbian period, with one account placing it between 450 BCE and 950 CE. The darker, most fertile form appears to have developed from preEuropean village middens consisting of ash and charcoal from kitchen fires, cultural debris, feces, human and animal bones, and house/garden waste. Open questions include whether the soils were made deliberately or accumulated as a by-product of settlement. Earlier explanations, such as sedimentation from floods, organic matter building up in lakes and small ponds, and ash fallout from Andean volcanoes, have largely been set aside, yet the precise origins of terra preta remain unclear. Their extent is equally uncertain. Mapped sites cover an estimated 6,000-18,000 square kilometers, while a modelling study suggested terra preta soils might actually cover more than 150,000 square kilometers, or 3.2% of the total forest. Mapping is hard because of the forest canopy and remoteness, and many archaeological sites have, in fact, been revealed by Brazil's accelerating deforestation. Their significance for the carbon balance is also debated, since even though just 3–4 per cent of the soil is terra preta, it is likely storing upwards of 9 million metric tonnes of carbon in one sampled slice of forest.

The Cerrado–Amazon boundary

Disputes over biome boundaries centre on the transition between the Amazon and the Cerrado. The zone is the world's largest savanna-forest transition, yet the CAT is represented in official maps used by Brazilian governmental agencies as a simple line separating the two biomes. Field and remote-sensing work has shown that the real limit is much more irregular. One study found that the boundary between them is more meandering and complex than shown in the official map, which was drawn up between 1970 and 1985. Some transitional areas reach as far as 250 kilometers from the current boundary line. Researchers have argued that this simplification has encouraged clearing, since simplification of the division between these biomes has facilitated deforestation in these transition areas. The legal consequences are significant, because landowners must keep 35% of the vegetation in the Cerrado and 80% in the Amazon under forest-reserve rules, so the location of a line determines the obligation. Scientists therefore debate whether the zone should be treated as a sharp ecotone with a redrawn boundary, or as a broad band with its own protection regime. The ecological character of the zone also complicates the question, since the Cerrado–Amazon Ecotone lacks an officially recognised boundary, and analyses have had to define study areas operationally.

Climate projections for South American rainfall

Projections of future rainfall across South America remain uncertain. Global climate models differ in how they simulate the South American monsoon, the moisture supply from the Amazon to the south-east, and the timing of the wet season in central and eastern Brazil. These differences affect estimates of how much rainfall may decline in the Amazon and Cerrado, and how drought risk for agriculture, hydropower and urban water supply will change. Uncertainty is also introduced by the feedbacks between forest loss and rainfall, which regional models represent with varying skill. Assessments of these risks, such as those by the Intergovernmental Panel on Climate Change, therefore present ranges rather than single values, and the regional consequences for water security, farming and biodiversity are still being refined.

References

1. Brazil Maps & Facts - World Atlasworldatlas.com
2. The Largest Countries In South Americaworldatlas.com
3. Geography of Brazilen.wikipedia.org
4. Brazil Country Profile - National Geographic Kidskids.nationalgeographic.com
5. Brazilbritannica.com
6. Brazil - Location, Size and Extentshaalaa.com
7. Brazil - Geographycountrystudies.us
8. Brazil Geography and Environmentcountryreports.org
9. Coastline of Brazilen.wikipedia.org
10. Chu%C3%AD Streamen.wikipedia.org
11. Coastal management in Brazilsciencedirect.com
12. Brazilian Coastal and Marine Protected Areas Importance, ...un.org
13. Northeastern Brazil restingasen.wikipedia.org
14. Northeast Brazil Restingasoneearth.org
15. Modelling Dunes from Lençóis Maranhenses National Park (Brazil): Largest dune field in South Americancbi.nlm.nih.gov
16. Fernando de Noronha, Brazilinternationalparks.org
17. Spider Diversity on the Oceanic Island of Fernando De Noronha, Brazil, and Implications for Species Conservationncbi.nlm.nih.gov
18. Brazilian Atlantic Islands: Fernando de Noronha Archipelago and Atol das Rocas Reserves - World Heritage Datasheetworld-heritage-datasheets.unep-wcmc.org
19. Ba%C3%ADa de S%C3%A3o Marcosen.wikipedia.org
20. Praia do Cassinoen.wikipedia.org
21. Brazilebsco.com
22. Restingaen.wikipedia.org
23. Bahia mangrovesen.wikipedia.org
24. Pico da Neblinaen.wikipedia.org
25. Neblina Peak : Climbing, Hiking & Mountaineering : SummitPostsummitpost.org
26. Great Escarpment, Brazilen.wikipedia.org
27. Brazil - Highlands, Plateaus, Riversbritannica.com
28. Denudation and retreat of the Serra do Mar escarpment in southern Brazil derived from in situ-produced 10Be concentration in river sedimentresearchgate.net
29. Geography of Brazilstudy.com
30. Guiana Highlands - Studentskids.britannica.com
31. Pico 31 de Mar%C3%A7oen.wikipedia.org
32. Agulhas Negras Peaken.wikipedia.org
33. (PDF) The precambrian evolution of South Americaresearchgate.net
34. Geology of the Amazon and Parnaiba Basinslink.springer.com
35. (PDF) The Proterozoic Basement of the Western Guiana Shield and the Northern Andesresearchgate.net
36. Cratons and orogenic belts of the Brazilian Shield and their contained gold depositsresearchgate.net
37. Middle Triassic SW Gondwana paleogeography and sedimentary dispersal revealed by integration of stratigraphy and U-Pb zircon analysis: The Santa Cruz Sequence, Paraná Basin, Brazil - ScienceDirectsciencedirect.com
38. Tibagi The Rocks of this Region The Paraná Basiniat.pr.gov.br
39. Triassic faunal successions of the Paraná Basin, southern Brazil - ScienceDirectsciencedirect.com
40. Unraveling the geological history of the South Atlantic margin: Records of West Gondwana Breakup from South Brazil and Uruguay margin - ScienceDirectsciencedirect.com
41. What Was The Gondwana Supercontinent?worldatlas.com
42. Unraveling the geological history of the South Atlantic margin: Records of West Gondwana Breakup from South Brazil and Uruguay marginresearchgate.net
43. Mesozoic break-up of SW Gondwana: Implications for regional hydrocarbon potential of the southern South Atlanticresearchgate.net
44. Evidence of post-Gondwana breakup in Southern Brazilian Shield: Insights from apatite and zircon fission track thermochronologyresearchgate.net
45. Geology of Brazilen.wikipedia.org
46. Paraná Basin: Mineral Resource Potentials in Brazil, Uruguay, and Paraguay: International Geology Review: Vol 39, No 8tandfonline.com
47. Amazon Riveren.wikipedia.org
48. The Amazon Riverwwf.panda.org
49. Long-term impact of Amazon river runoff on northern hemispheric climatenature.com
50. The Amazon River System: Nature's Mightiestlacgeo.com
51. 1 7th BIENNIAL ROSENBERG INTERNATIONAL FORUM ON WATER POLICYciwr.ucanr.edu
52. Paraguay Riveren.wikipedia.org
53. Rio de la Plata - New World Encyclopedianewworldencyclopedia.org
54. The Main Rivers of Brazil - Explore the Brazilian Freshwaterscaminhoslanguages.com
55. São Francisco River - Fish, Mammals, Reptilesbritannica.com
56. Brazil's largest and most important Riversaventuradobrasil.com
57. Tocantins basinen.wikipedia.org
58. The Amazon and Water - Amazon Aidamazonaid.org
59. Long-term impact of Amazon river runoff on northern hemispheric climatencbi.nlm.nih.gov
60. R%C3%ADo de la Plata Basinen.wikipedia.org
61. Brazil's Comprehensive Aquatic Landscapelacgeo.com
62. São Francisco River: Lifeline of Northeastern Brazillacgeo.com
63. Vegetation, rainfall, and pulsing hydrology in the Pantanal, the world’s largest tropical wetland - IOPscienceiopscience.iop.org
64. Quo vadis Pantanal? Expected precipitation extremes and drought dynamics from changing sea surface temperatureresearchgate.net
65. Physical, ecological and human dimensions of environmental change in Brazil's Pantanal wetland: Synthesis and research agenda - ScienceDirectsciencedirect.com
66. Effects of Severe Floods and Droughts on Wildlife of the Pantanal Wetland (Brazil)—A Reviewncbi.nlm.nih.gov
67. Full article: A reproducible regime-aware unsupervised framework to reduce flood-pulse confounding in wetland disturbance monitoring: Pantanal (2020–2025)tandfonline.com
68. The Pantanal under Siege—On the Origin, Dynamics and Forecast of the Megadrought Severely Affecting the Largest Wetland in the Worldmdpi.com
69. Hydrology of surface and groundwaters in the Pantanal floodplainsresearchgate.net
70. Pantanal Wetlandsebsco.com
71. Frontiersfrontiersin.org
72. (PDF) The Flood Pulse Concept: New Aspects, Approaches and Applications—An Updateresearchgate.net
73. Factsheet for teachersrgs.org
74. Climate of Brazil: Weather, Seasons & Best Time to Visit (2026)geographyworlds.com
75. Brazil - Climatecountrystudies.us
76. (PDF) Köppen's climate classification map for Brazilacademia.edu
77. Blue Green Atlas - The Climate of Brazilbluegreenatlas.com
78. Climate of Brazilen.wikipedia.org
79. Northeast Region, Brazilen.wikipedia.org
80. Brazil - Long-term (35 Years) Rainy and Dry Season Characterization in Semiarid Northeastern Brazil Long-term (35 Years) Rainy and Dry Season Characterization in Semiarid Northeastern Brazilscielo.br
81. Precipitation and Seasonal Variations in Brazila.atmos.washington.edu
82. The Flying Rivers of the Amazon: A Hidden Lifeline for Earth’s Climatequeenoftheforest.org
83. "It's famous for the mighty river that snakes through its forests, but high above the canopy, another vast river is moving…"discoverwildlife.com
84. KEEPING THE FLYING RIVERS FLOWING HOW DEFORESTATION IN THEamazonconservation.org
85. The Amazon’s flying rivers are vital to the climate and the economyliberalamazon.com
86. Targeted conservation in Brazil could help protect the Amazon’s flying riversnews.mongabay.com
87. www.malaymail.commalaymail.com
88. Why is rainfall declining in the Amazon? New research says deforestation is the leading drivernews.mongabay.com
89. Amazon tree loss may worsen both floods and droughts: studyphys.org
90. Impact of Amazonian deforestation on precipitation reverses between seasonsnature.com
91. Feedback between drought and deforestation in the Amazon - IOPscienceiopscience.iop.org
92. Study finds deforestation accounts for major Amazon rainfall declinenews.mongabay.com
93. Drying of Amazon could be early warning of ‘tipping point’ for the rainforest - Carbon Briefcarbonbrief.org
94. Flying Rivers of the Amazon Rainforest—a Critical Rain Generator for the Planetblog.pachamama.org
95. (a) The six terrestrial biomes according to the official Brazilian...researchgate.net
96. The Brazilian Pampa: A Fragile Biomedoi.org
97. Caatinga: 100% brazilian biome - Neoenergianeoenergia.com
98. Biomes in Brazilen.wikipedia.org
99. Brazil Biodiversity and Nature Conservationbiodb.com
100. IUCN Green List Brazil - IUCN Green Listiucngreenlist.org
101. Brazil - Country Profilecbd.int
102. Megadiverse countriesen.wikipedia.org
103. Recent assembly of the Cerrado, a neotropical plant diversity hotspot, by in situ evolution of adaptations to firepnas.org
104. Final Assessment July 2016 - March 2022 CEPF Investment in thecepf.net
105. (PDF) The Cerrado Biome: A Forgotten Biodiversity Hotspotresearchgate.net
106. Ecosystem Profile Cerrado Biodiversity Hotspot REVISED February 2017d29l0tur8ol1gj.cloudfront.net
107. Conserving Biogeography: Habitat Loss and Vicariant Patterns in Endemic Squamates of the Cerrado Hotspotncbi.nlm.nih.gov
108. Biodiversity in Brazil: A Megadiverse Countrycaminhoslanguages.com
109. Brazilian pastures occupy an area equivalent ...brasil.mapbiomas.org
110. Pasture, soybean and sugar cane occupy 77% of ...brasil.mapbiomas.org
111. MapBiomas Brasilbrasil.mapbiomas.org
112. In 2023, the loss of natural areas in Brazil reaches 33% ...brasil.mapbiomas.org
113. Full article: Accounting for alternation in temporal quality analysis in MapBiomas Braziltandfonline.com
114. Near doubling of Brazil’s intensive row crop area since 2000pnas.org
115. Soy made the Cerrado a breadbasket; climate change may end thatnews.mongabay.com
116. Deforestation in Brazil’s Cerrado reduces soy production and threatens supply chains - Zero Carbon Analyticszerocarbon-analytics.org
117. Effects of conversion of native cerrado vegetation to pasture on soil hydro-physical properties, evapotranspiration and streamflow on the Amazonian agricultural frontierncbi.nlm.nih.gov
118. Soy expansion in Brazil's Cerradoconbio.onlinelibrary.wiley.com
119. documents1.worldbank.orgdocuments1.worldbank.org
120. 11,381 research outputs foundcore.ac.uk
121. Brazil - Fertility and acidity status of latossolos (oxisols) under pasture in the Brazilian Cerrado Fertility and acidity status of latossolos (oxisols) under pasture in the Brazilian Cerradoscielo.br
122. The Cerrado of Brazil: A Success Story of Production on Acid Soilsresearchgate.net
123. Brazil - Nutritional adaptations of native plants of the cerrado biome in acid soils Nutritional adaptations of native plants of the cerrado biome in acid soilsscielo.br
124. Ameliorating soil acidity of tropical Oxisols by liming ...ars.usda.gov
125. Chapter 7 Ameliorating Soil Acidity of Tropical Oxisols by Liming For Sustainable Crop Production - ScienceDirectsciencedirect.com
126. Agricultural Sciences, 2019, 10, 841-851 http://www.scirp.org/journal/asscirp.org
127. Vale S.A. - Form 20-F - FY2025sec.gov
128. Vale S.A. - Form 6-K/A - FY2025sec.gov
129. Vale S.A. - Form 6-K - FY2025sec.gov
130. PETROBRAS - PETROLEO BRASILEIRO SA - Form 6-K - FY2013sec.gov
131. Brazil’s oil, natural gas production hits record high in Februaryagenciabrasil.ebc.com.br
132. Brazil Hits Oil & Gas Production Recordindustrialinfo.com
133. Energy in Brazilen.wikipedia.org
134. Brazil - Ember-energy.orgember-energy.org
135. U.S. Energy Information Administration logoeia.gov
136. Electricity sector in Brazilen.wikipedia.org
137. Hydroelectric plants account for more than 70% of Brazil's electric generation - U.S. Energy Information Administration (EIA)eia.gov
138. Brazil Electricity Production: The Hydropower Giant of South America - Global Electricityglobalelectricity.org
139. Brazil increases energy productionebsco.com
140. Vale S.A. - Form 6-K - FY2025sec.gov
141. Deforestation in the Amazonworldrainforests.com
142. How Cattle Ranching in Brazil Could Lead to the End of the Amazonsdg.iisd.org
143. Deforestation of the Amazon rainforesten.wikipedia.org
144. Growing soy on cattle pasture can eliminate Amazon deforestation in Brazilnews.mongabay.com
145. A tale of two biomes as deforestation surges in Cerrado but wanes in Amazonnews.mongabay.com
146. Cattle Supply Chains and Deforestation of the Amazoncsis.org
147. Deforestation in Brazil's Cerrado higher than in Amazon: Reportphys.org
148. Deforestation in Brazil’s Amazon Rainforest Slowed by 46% in Year: Report - Newsweeknewsweek.com
149. Heading into COP, Brazil’s Amazon deforestation rate is falling. What about fires?news.mongabay.com
150. 2024 Brazil wildfiresen.wikipedia.org
151. Brazil’s new deforestation data board sparks fear of censorship of forest loss, firesnews.mongabay.com
152. As its end looms, Cerrado tracker records 6-year deforestation highnews.mongabay.com
153. Beyond the canopy: How satellite data detection thresholds influence policy evaluation and deforestation behavior - ScienceDirectsciencedirect.com
154. Tracking Amazon Deforestation from Above - NASA Scienceearthobservatory.nasa.gov
155. Uses and Applications - INPE / Amazon Missioninpe.br
156. Demographics of Brazilen.wikipedia.org
157. 2022 Brazilian censusen.wikipedia.org
158. Rio de Janeiro%E2%80%93S%C3%A3o Paulo megalopolisen.wikipedia.org
159. Urbanisation and Urban Development in Brazil I Infographicurbanet.info
160. Amazon deforestation and urban expansion: Simulating future growth in the Manaus Metropolitan Region, Brazil - ScienceDirectsciencedirect.com
161. Resettlement in the Amazonwwf.panda.org
162. Metapolismetapolis.net
163. The Alarming Urbanization of the Amazonplanetizen.com
164. Influence of climate change and population growth on Amazon Metropolis water supply - ScienceDirectsciencedirect.com
165. The Amazon is urban, too!blogs.sussex.ac.uk
166. Cities Along the Floodplain of the Brazilian Amazon: Characteristics and Trendsresearchgate.net
167. List of metropolitan areas in Brazilen.wikipedia.org
168. IBGE: Brazil State Boundaries 2025 (Federation Units)developers.google.com
169. The Five Regions Of Brazilworldatlas.com
170. Brazilian Regions - The Brazil Businessthebrazilbusiness.com
171. How Many States in Brazil? 26 States & Federal District Explainedasmr.education
172. GDP grows in all the 27 states in Brazil in 2023agenciadenoticias.ibge.gov.br
173. Regional income inequality in Brazil: state-level Distributional National Accountsemerald.com
174. Brazilworldbank.org
175. Demographic aspects and regional income convergence in Brazil:repositorio.cepal.org
176. Brazil’s Inequality Drop in 2024 Stands Out, But Still Trails Regional Peersriotimesonline.com
177. Southeast Region, Brazilen.wikipedia.org
178. Navigation on the Amazon Riverwilsonsons.com.br
179. Cargo transport by navigation in the Amazon increases 235% in ten yearsoliberal.com
180. Waterborne Competitiveness U.S. and Foreign Investments in Inland Waterwaysenotrans.org
181. The transportation and logistics challenges in Northern Brazilalg-global.com
182. New transport infrastructure is opening the Amazon to global commercenews.mongabay.com
183. Brazil set to blast 35 km river rock formation for new Amazon shipping routenews.mongabay.com
184. In the Amazon, global competition drives bulk transport systemsnews.mongabay.com
185. BR-364 (Brazil highway)en.wikipedia.org
186. BR-319 (Brazil highway)en.wikipedia.org
187. The Human-Modified Landscapes (HML) and the Brazilian highway networknews.mongabay.com
188. ASSESSING THE SUSTAINABILITY IMPACTS OF PAVING HIGHWAY BR-163:wwfint.awsassets.panda.org
189. Port of Santosen.wikipedia.org
190. Latin America's Shipping Titan: Santos Port Expands Capacity Amid Record Growthriotimesonline.com
191. Port of Santos Beyond Cotton: The Giant Connecting Brazil to the World - Cotton Brazilcottonbrazil.com
192. (PDF) The concession of the BR-163 highway in the Brazilian Amazon: Corporatization of territory and conflictsresearchgate.net
193. Borders of Brazilen.wikipedia.org
194. Brazilbarrysborderpoints.com
195. Neighboring Countries of Brazilworldatlas.com
196. Brazil%E2%80%93Peru borderen.wikipedia.org
197. Brazil%E2%80%93France borderen.wikipedia.org
198. Illicit economies, organized crime worsen Amazon deforestation in 2025yahoo.com
199. A Three Border Problem: Holding Back the Amazon’s Criminal Frontierscrisisgroup.org
200. How Brazil's criminal groups threaten the Amazon rainforestcontext.news
201. Illicit frontiers: Criminal governance in the Amazon's tri-border regionglobalinitiative.net
202. The Amazon’s silent crime crisis (commentary)news.mongabay.com
203. THE ZONE OF PEACE AND COOPERATION OF THE SOUTH ATLANTIC: A CONTRIBUTION TO MARITIME SECURITY IN THE GULF OF GUINEAjanusonline.autonoma.pt
204. Southern currents: Mapping the geopolitics of the South Atlanticiss.europa.eu
205. Brazilian Navy Ship Leaves for Gulf of Guinea Operationseawaves.com
206. Brazil Promotes Maritime Security off Atlantic Coast of Africa - Diálogo Américasdialogo-americas.com
207. TENSÕES MUNDIAISrevistas.uece.br
208. Brazil: A Regional Provider of Stability and Securitylink.springer.com
209. Which Countries Border Brazil?worldatlas.com
210. Brazil%E2%80%93Guyana borderen.wikipedia.org
211. The Challenges in Africa’s Maritime Domain: Brazil’s Strategy for the Gulf of Guinealink.springer.com
212. Brazil - Historical Cartography (NE, Brazil): A Study of Coastal Geoforms Cartographed Post-Discovery Historical Cartography (NE, Brazil): A Study of Coastal Geoforms Cartographed Post-Discoveryscielo.br
213. Portuguese Brazil - World History Encyclopediaworldhistory.org
214. Brazilian Independencecourses.lumenlearning.com
215. 38 • Portuguese Cartography in the Renaissancepress.uchicago.edu
216. Jo%C3%A3o Teixeira Albernaz Ien.wikipedia.org
217. Historical Maps of Brazil and the Worldbahia.ws
218. On Maps, Race, and Diasporic Self-Fashioning in Early Nineteenth-Century Brazil - Southern Spacessouthernspaces.org
219. Map of the Brazilian Empire.loc.gov
220. Aziz Ab%27S%C3%A1beren.wikipedia.org
221. The Physical Geography of Brazil: Environment, Vegetation and Landscape [1st ed.] 978-3-030-04332-2, 978-3-030-04333-9 - DOKUMEN.PUBdokumen.pub
222. AB’SÁBER, AZIZ NACIB. OS DOMÍNIOS DE NATUREZA NO BRASIL: POTENCIALIDADES PAISAGÍSTICAS. SÃO PAULO: ATELIÊ EDITORIAL, 2003.periodicos.ufpe.br
223. Brazilian Institute of Geography and Statisticsen.wikipedia.org
224. A country in statistics : Revista Pesquisa Fapesprevistapesquisa.fapesp.br
225. IBGE celebrates 90 years with a national events agendaagenciadenoticias.ibge.gov.br
226. Legislative Assembly of PI carries out public hearing for IBGE´s 90th anniversaryagenciadenoticias.ibge.gov.br
227. Is the Amazon forest approaching a tipping point?sciencedaily.com
228. Deforestation and warming could push Amazon to tipping point by 2040s: Studynews.mongabay.com
229. Experts warn Amazon Rainforest is nearing a perilous 'tipping point' sooner than expectedthecooldown.com
230. New studies portray Amazon as surprisingly resilient, but tipping point loomsnews.mongabay.com
231. deforestation triggering tipping point amazon hydrological cycleeesm.science.energy.gov
232. The Nutrient-Rich Legacy in the Amazon's Dark Earths - Eos.orgeos.org
233. Amazonian Dark Earths: The First Century of Reportslink.springer.com
234. Terra pretaen.wikipedia.org
235. Semi-Intensive Pre-European Cultivation and the Origins of Anthropogenic Dark Earths in Amazonialink.springer.com
236. A mysterious Amazonian soil is making trees grow six times tallersciencefocus.com
237. (PDF) Redefining the Cerrado–Amazonia transition: implications for conservationresearchgate.net
238. Boundaries between the Amazon and the Cerrado : Revista Pesquisa Fapesprevistapesquisa.fapesp.br
239. Three decades of habitat fragmentation dynamics and landscape transformation in the Cerrado–Amazon transitionlink.springer.com