About two-thirds (504 million acres) of the Nation’s forests are classed as timberland, productive forests capable of producing 20 cubic feet per acre of industrial wood annually and not legally reserved from timber harvest (figs. 2 and 45). An additional 52 million acres of forest, reserved for non-timber uses, are managed by public agencies as parks or wilderness areas. Other forest lands on the remaining 191 million acres are not capable of producing 20 cubic feet per acre of industrial wood annually but are of major importance for watershed protection, wildlife habitat, domestic livestock grazing, and other uses and services. More than 90 percent of the �other� forests are in the West, with more than half in Alaska.