水土资源的保持和利用是国民经济稳定和增长的一个重大问题。南疆地区是我国沙漠化危害最严重的地区之一,水土流失现象较为严重。概述了水土流失的原因、危害及防治措施。 Research of soil and water's conservation and use is a question about national economy's stability and increase.Southern Xinjiang is one of the most serious districts facing up with the desertification disaster,it has serious soil and water loss.The authors discuss reasons,disaster,and measures of prevention and control of soil and water loss.