西部地区土壤侵蚀特征及其危害分析

遥感调查表明 ,西部 12个省 (市、自治区 )土壤侵蚀面积高达 4 .19× 10 6 km2 ,占全国土壤侵蚀总面积的 86 .86 % ,占西部总面积的 6 2 .31% ,已严重制约当地国民经济的可持续发展。对西部地区土壤侵蚀区域特征及其危害进行了系统分析 ,结果表明土壤侵蚀破坏土地资源、降低土壤肥力、制约粮食增长、影响水资源环境、导致灾害发生和生态环境失调等一系列危害。提出了相应的防治对策 ,以便将土壤侵蚀的危害降低到最低程度

Analysis on Soil Erosion Characteristics and Harms in the West Region of China

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 environment, and causes disaster and ecology environment imbalance, etc.. It is suggested that some prevention countermeasures for treating soil erosion, should been token in order to reduce harms of soil erosion to the lowest level.