Forest Management. 9/20/11. What is Deforestation?. Deforestation is the removal of large expanses of forest for other uses. . What is clear cutting?. When loggers remove ALL the trees from an area. Pros and Cons of clear cutting. Efficient, quick Higher yields Location focused
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Forest Management 9/20/11
What is Deforestation? • Deforestation is the removal of large expanses of forest for other uses.
What is clear cutting? • When loggers remove ALL the trees from an area.
Pros and Cons of clear cutting • Efficient, quick • Higher yields • Location focused • Can replenish with fast growing trees • Good for trees needing lots of direct sunlight • May create erosion, and soil infertility • Habitat destruction • Loss of biodiversity • Increases water pollution
What is selective cutting? • Intermediate aged or mature trees in the forest are cut one at a time or in small groups.
What is strip cutting? • Clear cutting a strip of trees along the contour of the land within a corridor narrow enough to allow natural forest regeneration.
What is a tree plantation? • A managed forest containing only one of the two species of trees that are all the same age.
Pros and Cons of Tree plantations pros cons Less biodiversity Less sustainable than natural forests Deplete the topsoil of nutrients Spread of genetically engineered seeds • Produce wood at a fast rate/maximize harvest yield • Diminishes the need to cut down old growth forests • Focus on one species • Easy access • Provide ecological services, such as oxygen production
How can fires be used to manage forests? • Prescribed surface fires • Prevention of Crown fires
What is a surface burn? • Undergrowth fires, which burn leaf litter on the forest floor. • Free up nutrients in decomposing material • Release seeds form cones of trees • Begin sprouting of secondary succession
What is a crown burn? • Huge, hot fire that burns whole trees.
What is a prescribed burn? • A carefully controlled surface burn, that eliminates the dry underbrush that might otherwise cause a crown fire.