05/06/2023
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Encyclopedia Britannica
Amazon Rainforest
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Amazon Rainforest
region, South America
Written and fact-checked by
Last Updated: May 24, 2023 • Article History
Recent News
May 24, 2023, 10:45 AM ET (AP)
Brazil builds 'rings of carbon dioxide' to simulate climate change in the Amazon
Deep in the Amazon, Brazil is building a complex of towers arrayed in six rings poised to spray carbon dioxide into the rainforest
May 22, 2023, 10:01 AM ET (AP)
In the Amazon, Brazilian ecologists try new approach against deforestation and poverty
A Brazilian non-profit has created a new model for land ownership that welcomes both local people and scientists to collaborate in preserving the Amazon, the world’s largest tropical forest
Top Questions
How large is the Amazon Rainforest?
How many species does the Amazon Rainforest contain?
How quickly is the Amazon Rainforest in Brazil being deforested?
A stream in the Amazon Rainforest, Ecuador.
A stream in the Amazon Rainforest, Ecuador.
Amazon Rainforest, large tropical rainforest occupying the drainage basin of the Amazon River and its tributaries in northern South America and covering an area of 2,300,000 square miles (6,000,000 square km). Comprising about 40 percent of Brazil’s total area, it is bounded by the Guiana Highlands to the north, the Andes Mountains to the west, the Brazilian central plateau to the south, and the Atlantic Ocean to the east.mazon Rainforest
Home
Geography & Travel
Nature Reserves & National Parks
Amazon Rainforest
region, South America
Written and fact-checked by
Last Updated: May 24, 2023 • Article History
Recent News
May 24, 2023, 10:45 AM ET (AP)
Brazil builds 'rings of carbon dioxide' to simulate climate change in the Amazon
Deep in the Amazon, Brazil is building a complex of towers arrayed in six rings poised to spray carbon dioxide into the rainforest
May 22, 2023, 10:01 AM ET (AP)
In the Amazon, Brazilian ecologists try new approach against deforestation and poverty
A Brazilian non-profit has created a new model for land ownership that welcomes both local people and scientists to collaborate in preserving the Amazon, the world’s largest tropical forest
Top Questions
How large is the Amazon Rainforest?
How many species does the Amazon Rainforest contain?
How quickly is the Amazon Rainforest in Brazil being deforested?
A stream in the Amazon Rainforest, Ecuador.
A stream in the Amazon Rainforest, Ecuador.
Amazon Rainforest, large tropical rainforest occupying the drainage basin of the Amazon River and its tributaries in northern South America and covering an area of 2,300,000 square miles (6,000,000 square km). Comprising about 40 percent of Brazil’s total area, it is bounded by the Guiana Highlands to the north, the Andes Mountains to the west, the Brazilian central plateau to the south, and the Atlantic Ocean to the east.
A brief treatment of the Amazon Rainforest follows. For full treatment, see South America: Amazon River basin.
Brazil
More From Britannica
Brazil: Amazonia
Central and Northern Andes and the Amazon River basin and drainage network
Central and Northern Andes and the Amazon River basin and drainage network
Amazonia is the largest river basin in the world, and its forest stretches from the Atlantic Ocean in the east to the tree line of the Andes in the west. The forest widens from a 200-mile (320-km) front along the Atlantic to a belt 1,200 miles (1,900 km) wide where the lowlands meet the Andean foothills. The immense extent and great continuity of this rainforest is a reflection of the high rainfall, high humidity, and monotonously high temperatures that prevail in the region.The Amazon Rainforest is the world’s richest and most-varied biological reservoir, containing several million species of insects, plants, birds, and other forms of life, many still unrecorded by science. The luxuriant vegetation encompasses a wide variety of trees, including many species of myrtle, laurel, palm, and acacia, as well as rosewood, Brazil nut, and rubber tree. Excellent timber is furnished by the mahogany and the Amazonian cedar. Major wildlife includes jaguar, manatee, tapir, red deer, capybara and many other types of rodents, and several types of monkeys.
In the 20th century, Brazil’s rapidly growing population settled major areas of the Amazon Rainforest. The size of the Amazon forest shrank dramatically as a result of settlers’ clearance of the land to obtain lumber and to create grazing pastures and farmland. Brazil holds approximately 60 percent of the Amazon basin within its borders, and some 1,583,000 square miles (4,100,000 square km) of this was covered by forests in 1970. The amount of forest cover declined to some 1,283,000 square miles (3,323,000 square km) by 2016, about 81 percent of the area that had been covered by forests in 1970. In the 1990s the Brazilian government and various international bodies began efforts to protect parts