11:375:101 Lecture Notes - Lecture 15: Local Extinction, Kenaf, Wilderness Act
5 Dec 2017
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Document Summary
Microclimate provide variety of habitats and biomes. More than 25% of its land is nature reserves and national parks. More birds in costa rica than all of u. s. Government pays landowners to restore forests instead of paying them to cut them down. 10-1 forests vary in their age, make-up, and origins. Uncut, not disturbed for several hundred years. Forest after clear cutting forest and replanting of seeds. May supply most industrial wood in the future. Designed for trees to grow as fast as possible. Seeds are spaced out well so that trees can grow nicely. Forest ecosystems provide ecosystem services far greater in value than the value of raw materials obtained from forests. Pull our co2 from the environment and converts it to sugar. When trees are cut down, the co2 goes back into the atmosphere. Intermediate-age or mature trees are cut singly or in small groups. All trees in an area are removed.
