孟宗沟小流域泥石流特征及其防治对策

The Characteristics and Countermeasures of the Mud-rock Flows in the Menzonggou Watershed

该文通过对长江源头地区典型试点小流域——青海省玉树县盂宗沟流域泥石流成因的调查分析。认为造成该地区泥石流的主要原因除地质、地形、土壤、降水、植被和人为因素外，还与冻融侵蚀和降水形式关系密切，根据该流域泥石流的特征及危害，提出了治坡与治沟相结合的综合防治体系，使泥石流灾害减轻到最低程度。

The soil and water loss in the source of the yangtze river is paied attention gradually inrecent years, It is not only widespread in whole watershed but also very serious in parts. Mud-rockflow is the common serious erosion form and has some special erosion characteristics,so it is neces-sary to adopt some special measures to control it.Through the investigation to the cause of mud-rock flow in the Menzonggou wathershed inyushu county of Qinghai province. it is considered thatthe main causes are not only geology、landform、soil、rainfall、vegetation and mankind factor but alsomelting erosion and rainfall forms. According to the danger and characteristics of the mud-rockflows in this watershed ,the comprehensive control system for controlling gullies in combination withcontrolling slopland is put out to decrece the disasters to least.