Old-growth mangrove stands are improbable states for this ecosystem type, and they can revert to younger stages. Mangroves offer a challenge to the concept of the old-growth forest, and through our analysis of this system we show that when ecosystem functions and states are evaluated it is ...
Late-Successional and Old-Growth For- ests in the Northeastern United States: Structure, Dynamics, and Propects for Restoration. Forests. 2013;4:1055-1086.Ducey, M.; Gunn, J.; Whitman, A. Late-successional and old-growth forests in the Northeastern United States: Structure, dynamics, and ...
sparse forest types. Controversies in the United States around management of older forests in the 1980 s focused on in the Pacific Northwest led the USDA Forest Service to adopt a generic definition of old growth as: “ecosystems distinguished by old trees and related structural attributes. Old-...
Redwood National Park, national park in the northwestern corner of California, U.S. It was established in 1968, with a boundary change in 1978, and was designated a World Heritage site in 1980. Preserving virgin (old-growth) groves of ancient redwood tre
Provides information on forests of interests to tourists in the United States. Muir Wood, Humboldt Redwoods State Park, Jedediah Smith Redwoods State Park and Redwood National Park in California; Olympic National Park and Hoh Rain Forest in Washington; Sitka National Historical Park in Alaska.关键词...
Information about old growth for selected forest type groups in the eastern United States Compiles information about old-growth attributes for nine forest type groups that occur in the eastern United States. A range of values for each old-growt... LE Tyrrell,GJ Nowacki,TR Crow,... 被引量:...
old-growth (ŏld′grōth′) adj. Of, related to, or being a forest characterized by a large proportion of old trees, a high level of structural complexity, and a history of little human disturbance. old growthn. American Heritage® Dictionary of the English Language, Fifth Edition. Copyri...
period from 1930 to 1979 in old growth (3.1-4.5%) was not significantly different from the disturbance rate in second-growth forest (3.5-4.1%). The composition and structure of old growth were distinctive, but disturbance rates in old growth were similar to patterns in nearby second-growth ...
1Ⅲ.语法填空Spotted owls(斑点猫头鹰) live in old-growth forestsin the western United States and act as an indicator species,a measure of the biological health of 1 area, for public-land management.The species is 2 (particular) allergic to logging,and when the northern subspecies of spotted ...
The Old Growth: Directed by Aaron Nelson. With Andrea Poole. A walk among Old Growth Fir trees in Oregon's protected Salmon-Huckleberry Wilderness. A brief discussion on the importance of these trees to the forest's cycle, and how meaningful the forest i