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  2. Shelterwood cutting - Wikipedia

    en.wikipedia.org/wiki/Shelterwood_cutting

    A shelterwood establishment cut in an eastern white pine stand in Maine. Shelterwood cutting removes part of the old forest stand to allow for a natural establishment of seedlings under the cover of the remaining trees. [1] Initial cuttings give just enough light to allow for the regeneration of desired species. Subsequent cuttings give the new ...

  3. Sierra Nevada subalpine zone - Wikipedia

    en.wikipedia.org/wiki/Sierra_Nevada_subalpine_zone

    This species is found at higher elevations than all other species in this region, forming dense monospecific stands of krummholz near the tree line and near ridgetops. At lower elevations, whitebark pine can co-occur with lodgepole pine, Sierra juniper (Juniperus occidentalis ssp. australis) and mountain hemlock (Tsuga mertensiana). [2] [10]

  4. Thinning - Wikipedia

    en.wikipedia.org/wiki/Thinning

    Thinning from below – this low thinning can be split into 4 Grades: A Grade is a very light thinning, that removes all overtopped trees Kraft crown class 4 and 5. B Grade is a very light thinning that removes overtopped trees and intermediates which are Kraft Crown class 4,5 and some 3s, C Grade and D Grade are a moderate and heavy thinning respectively removing anything that will not lead ...

  5. Ecological thinning - Wikipedia

    en.wikipedia.org/wiki/Ecological_Thinning

    An example of ecological thinning research is the project in Victoria's Box-Ironbark forests, investigating various thinning and timber removal methods under an adaptive management or AEM framework. The primary objective is to generate (over time) a number of forest habitat values (i.e. tree hollows ) that are crucial for wildlife conservation .

  6. Biden administration moves to protect old-growth forests as ...

    www.aol.com/news/us-moves-protect-old-growth...

    Douglas fir stands can take 100 years. Wildfire frequency also factors in: Ponderosa pine forests are adapted to withstand blazes as often as once a decade, compared to lodgepole pine stands that ...

  7. Tree plantation - Wikipedia

    en.wikipedia.org/wiki/Tree_plantation

    Plantations are usually near- or total monocultures. That is, the same species of tree is planted across a given area, whereas a natural forest would contain a far more diverse range of tree species. In the 1970s, Brazil began to establish high-yield, intensively managed, short rotation plantations. These types of plantations are sometimes ...

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