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Northern spotted owl. Although very significant in certain local economies, the overall economic impact of the forest industry in California in the 21st century is fairly modest. California forests produce about 350 million board feet of wood products annually.
Native ash species, including white ash (pictured), have been declining rapidly this century due to predation by the emerald ash borer. [1]Silvics of North America (1991), [2] [3] a forest inventory compiled and published by the United States Forest Service, includes many hardwood trees.
Specifically, it refers to lumber cut for industrial or wood-packaging use. Lumber is cut by ripsaw or resaw to create dimensions that are not usually processed by a primary sawmill. Re-sawing is the splitting of 1-to-12-inch (25–305 mm) hardwood or softwood lumber into two or more thinner
Hardwood forests of the eastern United States can develop old-growth characteristics in 150–500 years. In British Columbia , Canada, old growth is defined as 120 to 140 years of age in the interior of the province where fire is a frequent and natural occurrence.
National Hardwood and Lumber Association; American Hardwood Information Center; American Hardwood Export Council; Australian National Association of Forest Industries;
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Betula alleghaniensis, forest emblem of Quebec, [6] Canada. Betula alleghaniensis is a medium-sized, typically single-stemmed, deciduous tree reaching 60–80 feet (18–24 m) tall (exceptionally to 100 ft (30 m)) [2] [7] with a trunk typically 2–3 ft (0.61–0.91 m) in diameter, making it the largest North American species of birch.
Austin T. Blakeslee Natural Area, Monroe County, Pennsylvania. The northern hardwood forest is a general type of North American forest ecosystem found over much of southeastern and south-central Canada, Ontario, and Quebec, extending south into the United States in northern New England, New York, and Pennsylvania, and west along the Great Lakes to Minnesota and western Ontario.