Glossary of Common Forestry Terms (T-W)

10 terms by kderbs

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Timber Stand Improvement (TSI)

precommercial or non-commercial activity designed to improve tree and stand quality and/or release the potential crop trees in a stand; may include thinning, weeding, and pruning

timber type

See forest type.

thinning

removal of some trees in a stand in a stand to increase growing space thereby improving growth rate and/or quality in the remaining trees

uneven-aged management

managing a forest or forest stand to produce three or more distinct age classes of trees

uneven-aged stand

a forest or stand composed of intermingling trees that differ markedly in age

vernal pool

an ephemeral body of water that fills in the spring, holds water for at least 10 days, and dries up by fall some or all years and that does not contain fish

weeding

the removal of all plants competing with a crop species, regardless of whether their crowns are above, beside, or below those of the desirable trees; removal of diseased, damaged, and poor quality trees.

wildlife habitat

four basic components of habitat are food, water, cover, and space; specific requirements for each of these components will vary with species, season of year, and the age and sex of the animal

windfirm

the ability of the root system of a tree to withstand pressure and keep the tree upright

wolf tree

usually large in size, limby, and poorly formed with little commercial value; same function as snags, except the tree is still alive and possibly producing mast

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