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The forest resources of the United States remained relatively constant through the 20th century. [9] The Forest Service reported total forestation as 766,000,000 acres (3,100,000 km 2) in 2012. [10] [11] [9] A 2017 study estimated 3 percent loss of forest between 1992 and 2001. [12]
The forest contains the largest tract of remaining old-growth forest in Pennsylvania at Tionesta Scenic and Research Natural Areas and 10 mi (16 km) of the North Country Trail. [7] [8]: 255–263 Angeles: California: December 20, 1892 [9] 661,565 acres (2,677.3 km 2)
Map of wood-filled areas in the United States, c. 2000 [1] 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 ]
This is a list of countries and territories of the world according to the total area covered by forests, based on data published by the Food and Agriculture Organization of the United Nations (FAO). In 2010, the world had 3.92 billion hectares (ha) of tree cover , extending over 30% of its land area.
Ecoregions of North America, featuring the 50 United States, the District of Columbia and the five inhabited territories. The following is a list of ecoregions in the United States as identified by the World Wide Fund for Nature (WWF).
In British Columbian inland rainforests, there are 17.1% of forests, 5% of old forests and 4.5% of old, intact forests strictly protected. That means that the vast majority of the Canadian Inland rainforests are open to large-scale human impacts like clear-cut logging and other anthropogenic disturbances. [28]
Age of the bedrock underlying North America, from red (oldest) to blue, green, yellow (newest). Seventy percent of North America is underlain by the Laurentia craton, [5] which is exposed as the Canadian Shield in much of central and eastern Canada around the Hudson Bay, and as far south as the U.S. states of Michigan, Wisconsin, and Minnesota.
The Eastern Temperate Forests is a Level I ecoregion of North America designated by the Commission for Environmental Cooperation (CEC) in its North American Environmental Atlas. The region covers much of the Eastern and Midwestern United States , the U.S. Interior Highlands , and parts of Ontario , Quebec , and the Maritimes .