desertification

by bridgetrugg
Last updated 6 years ago

Discipline:
Science
Subject:
Earth Sciences
Grade:
12

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desertification

The Rio Puerco Watershed has become a poster child for erosion problems. Its decline is due to improper grazing, road development, and other causes.

Erosional Glog

Desertification

Desertification has many causes, though over grazing seems to be one of the biggest and most widespread. When the plants in an area are consumed faster than they are produced, it upsets the balance in the ecosystem. Plants not only hold water, but keep the soil in place. Desertification allows greater erosion of soil by wind, and makes future life for plants, animals, and humans much more difficult in the area.

Desertification is the ongoing decline of a dryland ecosystem. Human and animal involvement, climate change, and lack of adeuqate precipitation can cause a once-productive area of land to become desolate and desert-like.

It can be prevented

Southern Africa is the area most affected by desertification, with nearly half of the area being at risk.


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