Search results
Results from the WOW.Com Content Network
Map of national forests and national grasslands of the United States. The United States has 154 protected areas known as national forests, covering 188,336,179 acres (762,169 km 2; 294,275 sq mi). [1] National forests are managed by the U.S. Forest Service, an agency of the U.S. Department of Agriculture. [2]
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]
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]
About 87 percent of national forest land lies in the Western United States, mostly in mountain ranges. Alaska has 12 percent of all national forest lands. [10] Within the national forest system, there are 1,200 sites listed on the National Register of Historic Places and 23 are National Historic Landmarks. [1]
In northern Idaho rainforest patches along the Clearwater River, a mean annual temperature of 5.4°C has been measured. [8] In British Columbian Inland rainforest areas, the mean annual temperature ranges from 2.7 to 4.5°C. In the coldest months, the mean temperature of these region lies between -8 and -9.5°C. [9]
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]
The United States Forest Service (USFS) is an agency within the U.S. Department of Agriculture that administers the nation's 154 national forests and 20 national grasslands covering 193 million acres (780,000 km 2) of land. [5]
About half the area of the park, some 3,000,000 acres (1,200,000 ha), is state-owned and preserved as "forever wild" by the Forest Preserve of New York. Wood-Tikchik State Park in Alaska is the largest state park by the amount of contiguous protected land; it is larger than many U.S. National Parks, with some 1,600,000 acres (650,000 ha ...