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In terms of biodiversity, the only comparable temperate deciduous forest regions in the world are in central China, Japan, and in the Caucasus Mountains.Both the Appalachians (along with the neighbouring Appalachian mixed mesophytic forests ecoregion) and central China contain relict habitats of an ancient forest that was once widespread over the Northern Hemisphere.
A traditional provider of turpentine and resins for naval and other uses. Forests of these trees may once have covered 60 million acres (240,000 km 2), but have been reduced to less than one-fifteenth of that. Uses: timber; landscaping, posts, pulpwood, terpenes, veneers [92] [93] VA and the Southeast
A listing of lists of trees. List of individual trees, including actual and mythical trees; List of largest giant sequoias; List of old growth forests; List of oldest trees; List of superlative trees. List of superlative trees in Sweden; List of tallest trees; List of tree genera; List of trees and shrubs by taxonomic family
Forest cover in the Eastern United States reached its lowest point in roughly 1872 with about 48 percent compared to the amount of forest cover in 1620. The majority of deforestation took place prior to 1910 with the Forest Service reporting the minimum forestation as 721,000,000 acres (2,920,000 km 2) around 1920. [8]
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]
Coniferous temperate evergreen forests are most frequently dominated by species in the families. The trees include: Pinaceae and Cupressaceae.Broadleaf temperate evergreen forests include those in which Fagaceae, such as oaks and ferns are common, those in which Nothofagaceae predominate, and the eucalyptus forests of the Southern Hemisphere.
The fungus Amylostereum areolatum weakens trees and allows insects such as the Sirex noctilio (European wood wasp) to take over massive numbers of forests. The most common problems in spruce and fir forests are bark beetles, budworms, and gall-forming insects, to which spruce is extremely susceptible. [14]
The most common plant communities are pine forest, pine–oak forest, oak forest, and oak or pine-oak woodland, with smaller areas of mixed conifer forest, mesophytic forest, montane meadow, primary or secondary chaparral, and juniper scrub. [4] Pine forests occur from 1600 to 3200 meters elevation under a variety of conditions. The species ...