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Deforestation in the Maranhão state, Brazil, in July 2016. The Amazon rainforest, spanning an area of 3,000,000 km 2 (1,200,000 sq mi), is the world's largest rainforest.It encompasses the largest and most biodiverse tropical rainforest on the planet, representing over half of all rainforests.
Other forest ecosystems have suffered as much or more destruction as tropical rainforests. Deforestation for farming and logging have severely disturbed at least 94% of temperate broadleaf forests; many old growth forest stands have lost more than 98% of their previous area because of human activities. [7]
Deforestation and forest area net change are not the same: the latter is the sum of all forest losses (deforestation) and all forest gains (forest expansion) in a given period. Net change, therefore, can be positive or negative, depending on whether gains exceed losses, or vice versa.
Photo Illustration by Elizabeth Brockway/The Daily Beast/GettyIn July 1921, Benton MacKaye, founder of regional planning and the visionary behind the Appalachian Trail, held a historic meeting ...
Deforestation in the Brazilian Amazon during the first half of 2022 broke all records, a measure of the increasing destruction taking place under the presidency of Jair Bolsonaro. Deforestation is ...
The forest resources of the United States remained relatively constant through the 20th century. [3] The Forest Service reported total forestation as 766,000,000 acres (3,100,000 km 2) in 2012. [4] [5] [3] A 2017 study estimated 3 percent loss of forest between 1992 and 2001. [6]
Primary forest is the most important forest for the preservation of biodiversity. [17] [18] Consequently, the loss of primary forest is the greatest threat to species survival. [19] Based on one study of forest cover in Haiti, [8] primary forest in the country declined from 4.4% to 0.32% between 1988 and 2016. Those authors estimated that the ...
Biophysical mechanisms by which forests influence climate. Irreversible deforestation would result in a permanent rise in the global surface temperature. [23] Moreover, it suggests that standing tropical forests help cool the average global temperature by more than 1 °C or 1.8 °F.