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Land-use classes | Gross area -Entire area of land and water as determined by the Bureau of Census, 1960. Forest land -Land at least 16.7 percent stocked by forest trees of any size, or formerly having such tree cover, and not currently developed for nonforest use. Commercial forest land -Forest land capable of producing crops of industrial wood and not withdrawn from timber utilization by statute or administrative regulation. Included are areas suitable for growing crops of industrial wood and generally capable of producing in excess of 25 cubic feet per acre of annual growth. Noncommercial forest land -Unproductive forest land incapable of yielding crops of industrial wood because of adverse site conditions. Also, productive forest land withdrawn from commercial timber use through statute or administrative regulation, or exclusively used for Christmas tree production. Reserve forest land -Noncommercial forests that are productive but reserved for recreation or other nontimber uses. Land area -Area of dry land and land temporarily or partially covered by water such as marshes, flood plains, streams, sloughs, and estuaries. Canals less than 1/8 mile wide, and lakes, reservoirs, and ponds smaller than 40 acres are included as land area. Nonforest land -Land that has never supported forests. -Land formerly forested where forest use is precluded by development for nonforest uses, such as cropland, improved pasture, residential areas, and city parks. |
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