Remote sensing investigation shows that soil erosion area is about 4.1911 million square kilometers for twelve provinces of the west region of China. It is 86.86% of the total soil erosion area of China and 62.31% of total area of west region. It has been the crucial factor to limit the sustainable development of society and economy in the west region. Soil erosion destroys land resource

reduces soil fertility

limits grain increase production

affects water resource envi ro nment

and causes disaster a nd ecology environment imbalance

etc. . It is suggested that some prev ention countermeasures for treating soil erosion

should been token in order to reduce harms of soil erosion to the lowest level