The tropical rainforest have been managed by mankind for thousands of years to sustain productive agriculture for the human population. 12 percent of the Amozon is anthropogenic in nature due to the ongoing attempts to sustain ecenomic growth by developing communities and industries.
Disturbance by humans is not new to the Amozon. Indgneous people have attempted to sustain the resources of the forest which is duplicated today in different ways.
Patchworks, annual crops, pasture land, secondary growth are ways to sustain these forests. Replanting on a regular basis is a key practice to sustaining the forests.
The farming of feilds secondary to older forests can promote regrowth when clearcutting.
With a long history of disturbance by humans about two-fifths of rainforest deforestation is by shifted cultivator, usually in overpopulated areas.
Creating conditions that will initiate the growth of fruit trees and vine forests is one way that the rapid decline of these forests can be helped. Monocultures which are single crop fields, that must be replantedon a regular basis to sustain yeilds, are another way to sustain these lands.
forests with yeilds such as coffee rubber and pepper can be sustained by only farming small areas and then replanting immediately.
http://rainforests.mongabay.com/1002.htm
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