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The majority of deforestation took place prior to 1910 with the Forest Service reporting the minimum forestation as 721,000,000 acres (2,920,000 km 2) around 1920. [2] The forest resources of the United States remained relatively constant through the 20th century. [3]
This amounts to an average annual deforestation rate of 1.14%. [40] Between 2000 and 2005 the rate accelerated to 1.43% per annum. However, with a long history of policy and laws towards environmental protection, deforestation rates of primary cover have decreased 35% since the end of the 1990s thanks to a strong history of conservation ...
The breakdown of forest loss globally, and by region, is shown in the chart. Just over one-quarter of global forest loss is driven by deforestation. The remaining 73% came from the three drivers of forest degradation: logging of forestry products from plantations (26%); shifting, local agriculture (24%); and wildfires (23%).
In the United States, the forest cover by state and territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) program of the Forest Service. [2] Tree volumes and weights are not directly measured in the field, but computed from other variables that can be measured. [3] [4]
In the United States, deforestation was an ongoing process until recently. Between 2010 and 2020, the US forests increased 0.03% annually, according to FAO (Food and Agriculture Organization of the United Nations). [a]
The regions with the highest tropical deforestation rate between 2000 and 2005 were Central America—which lost 1.3% of its forests each year—and tropical Asia. [49] In Central America , two-thirds of lowland tropical forests have been turned into pasture since 1950 and 40% of all the rainforests have been lost in the last 40 years. [ 66 ]
Deforestation in Brazil — which threatens the Amazon Rainforest, pictured above, — could hit an all-time low in the next 1-2 years, one government official said this week.
English: Net forest loss is not the same as deforestation – it measures deforestation plus any gains in forest over a given period. Over the decade since 2010, the net loss in forests globally was 4.7 million hectares per year. However, deforestation rates were much significantly higher.