长江源头的小流域综合治理及其效能

Comprehensive Treatment of Small Catchment of Yangtze River Source and Its Functions

孟宗沟小流域是长江源头高寒牧区水土流失综合治理试点。通过沟道与坡面两方面的治理，工程措施与生物措施相结合，增加地面、坡面植被，栏蓄径流，减少泥沙下泄，在防护效能上取得了显著成果。

Meng Zong Gou small catchment is a pilot site for comprehensive treatment of soil erosion in high-cold grazing land of Yangtze River source.A distinguished effect in protection has been achieved through treatment of valleys and slopes,combining engineering and biological measures,increasing vegetation on land and slope,and by intercepting runoffs to decrease sand downdraught.