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Rangelands
n/a
20
Environmental Studies
12th Grade
02/04/2010

Additional Environmental Studies Flashcards

 


 

Cards

Term
clear cutting
Definition
Felling all timber in an area, as opposed to selectively cutting larger trees or certain species.
Term
controlled burning
Definition
is conducted during the cooler months to reduce fuel buildup and decrease the likelihood of serious hotter fires.
Term
crown fire
Definition
A forest fire burning primarily in the tops of trees and shrubs.
Term
deforestation
Definition
The act or process of removing trees from or clearing a forest.
Term
even-aged management
Definition
the removal of nearly all of the trees within a harvest area.
Term
ground fire
Definition
that originates from the ground.
Not as harmful, sometimes beneficial
Term
old-growth forest
Definition
Forest or woodland having a mature ecosystem characterized by the presence of old woody plants and the wildlife and smaller plants associated with them.
Term
overgrazing
Definition
To permit animals to graze (vegetational cover) excessively, to the detriment of the vegetation.
Term
pasture
Definition
Grass or other vegetation eaten as food by grazing animals.
Term
rangeland
Definition
An expanse of land suitable for livestock to wander and graze on
Term
reforestration
Definition
restocking of existing forests and woodlands which have been depleted.
Term
riparian zones
Definition
part of the watershed immediately adjacent to the stream channel.
Term
selective cutting
Definition
harvesting a proportion of the trees in a stand. Selection cutting is the practice of removing mature timber  to improve the timber stand.
Term
strip cutting
Definition
cut one tree, skip one, cut one, skip one
Term
surface fire
Definition
 forest fire in which only surface litter and undergrowth burn.
Term
tree plantation
Definition
planted stands of trees
Term
undergrazing
Definition
The act of one who, or that which, grazes.
Term
uneven aged management
Definition
remove mature trees, or groups of them, leaving gaps and young trees to grow, allocating a portion of the growing space to regeneration.
Term
wilderness
Definition
An unsettled, uncultivated region left in its natural condition
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