南水北调中线工程源头区水土流失及其治理——南阳市汉水流域研究

对南水北调中线工程源头区——河南南阳市汉水流域水土流失的现状、成因、危害进行了分析 ,在此基础上 ,讨论了治理水土流失的对策措施。研究认为 ,严重的水土流失将对南水北调中线工程产生影响 ,其形成既有自然原因 ,更有移民返迁、人口负荷过大等人为原因 ,应通过行政、经济、法律手段及妥善安置移民来治理水土流失

Soil Erosion and Its Control in Source Area of Middle Line Project of Transferring Water from the South to the North--A Study on Hanshui River Valley in Nanyang City

The present situation, causes of formations and damages of soil erosion in Hanshui river valley in Nanyang city are analyzed, which is in the source area of the Middle Line Project of Transferring Water from the South to the North. The measures to control soil erosion in the area are disicussed. The serious soil erosion will have influence on the Middle Line Project. The reasons of soil erosion are natural factors and human factors such as overpopulation pressure caused by the emigrants returning back to the original districts. The countermeasures of soil erosion control include political, economic, legislative measures as well as the way of settling emigrants appropriately.