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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]
It has been estimated that before European settlement, forests in the United States mainland covered nearly 1 billion acres (4,000,000 km 2). [1] Since the mid-1600s, about 300 million acres (1,200,000 km 2 ) of forest have been cleared, primarily for agriculture during the 19th century.
Name A Photo Location [6] B Date formed [4] C Area [1] Description D; Allegheny: Pennsylvania: September 24, 1923: 513,655 acres (2,078.7 km 2) : Pennsylvania's only national forest includes Kinzua Dam and Allegheny Reservoir on the Allegheny Plateau in the northwestern part of the state.
State forests in the United States (5 C, 2 P) Urban forests in the United States (30 P) * ... Forest cover by state and territory in the United States;
Thirty-eight of the U.S.'s 50 states have state forests, as does one territory, Puerto Rico. The remaining twelve states do not have state forests. This is a list of links to state forests in the United States. See also Category:State forests in the United States.
Forest cover is the amount of trees that covers a particular area of land. It may be measured as relative (in percent ) or absolute (in square kilometres / square miles ). Nearly a third of the world's land surface is covered with forest, with closed-canopy forest accounting for 4 - 5 billion hectares of land. [ 1 ]
Forests of Washington (state) (4 C, 17 P) Forests of West Virginia (2 C, 1 P) Forests of Wisconsin (2 C, 4 P) Forests of Wyoming (1 C, 3 P) This page was last ...
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