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National Forests are largely forest and woodland areas owned collectively by the American people through the federal government, and managed by the United States Forest Service, a division of the United States Department of Agriculture.
The National Forest System was created by the Land Revision Act of 1891, which was signed under the presidency of Benjamin Harrison. It was the result of concerted action by Los Angeles-area businessmen and property owners who were concerned by the harm being done to the watershed of the San Gabriel Mountains by ranchers and miners. Abbot Kinney and forester Theodore Lukens were key spokesmen for the effort.
In the United States there are 155 National Forests containing almost 190 million acres (297,000 mi²/769 000 km²) of land. These lands comprise 8.5 percent of the total land area of the United States, an area about the size of Texas. Some 87 percent of National Forest land lies west of the Mississippi River in the mountain ranges of the Western United States. Alaska has 12 percent of all National Forest lands.
There are two distinctly different types of forests within the National Forest system.
Land management of these areas focuses on conservation, timber harvesting, livestock grazing, watershed protection, wildlife, and recreation. Unlike national parks and other federal lands managed by the National Park Service, extraction of natural resources from national forests is permitted, and in many cases encouraged. National Forests are categorized by the U.S. as IUCN Category VI protected areas (Managed Resource Protected Area).
There are management decision conflicts between conservationists and environmentalists, and natural resource extraction companies and lobbies (e.g. logging & mining), over the protection and/or use of National Forest lands. These conflicts center on endangered species protection, logging of old-growth forests, intensive clear cut logging, undervalued stumpage fees, mining operations and mining claim laws, and logging/mining access road-building within National Forests. Additional conflicts arise from concerns that the grasslands, shrublands, and forest understory are grazed by sheep, cattle, and, more recently, rising numbers of elk and mule deer due to loss of predators.
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