平原高沙土地区土壤侵蚀规律及主要防治措施

Soil Erosion Regulation and Main ControlMeasures in High Sandy Soil Area

研究了平原高沙土地区农田、内三沟及河坡土壤侵蚀的特点 ,农田土壤侵蚀后就近淤积 ,内三沟土壤侵蚀量与淤积量基本持平 ,河坡土壤侵蚀量小于河床淤积量。植被覆盖率与径流量、含沙量、冲刷量及淤积量存在密切相关关系 。

The characteristics of soil erosion on farmland are studied, as well as the slopes of three kinds of inner ditches and river banks in the high sandy soil area of Jiangsu Province. The soil eroded from farmland is usually deposited in the nearby ditches. The soil erosion quantity from the three kinds of inner ditches is roughly the same with the deposition amount in the ditches. But the soil erosion amount from the slopes of river banks is much less than the deposited amount on the river beds. The research results show that there is a closer relationship between vegetation coverage with surface runoff modules, sand content, soil erosion modules and soil deposited amount separately. And also some key measures are given out in order to control soil erosion and decrease erosion modules in the high sandy soil area.