泥石流生物生态工程治理及其效益--以云南南涧县城后山为例

以南涧县城后山泥流为研究对象，采用沟，坡同治，重在调蓄水工程建设以改善山地水分循环，削减地表径流，调节洪水，稳固松散性，促进植物生长等一系列措施。据此，提出了以生物治理为主，土建工程与社会管护相结合的生物生态工程泥石流的方法。

BIO_ECOLOGICAL ENGINEERING PREVENTION AND CONTROL OF DEBRIS FLOW OF HOUSHAN BY NANJIAN COUNTY TOWN, YUNNAN

The principles, contents and measures of bio_ecological engineering for controlling debris flow, based on the ecological principles and local natural conditions, were documented in this paper. Nanjian county, characterized as dry hot valley climate, lies in the mid_southern part of Yunnan province. The bio_ecological engineering for controlling debris flow of Houshan area by Nanjian county town was conducted from 1989 to 1997 . The various gullies, slopes and other disaster bodies, and human being activity factors in the area had been planed separately and managed simultaneously. The guiding principles of "stabilizing, protecting and using" were specially emphasized in the project. The construction of water storage, combination of biological hedge and check dam, improvement of water cycling on slope fields and regeneration of forest vegetation were also practised. The protecting system consisted of 77 check dams, 630 meters of discharge canal, 830 bio_check dams, 2 500 meters of bio_hedge and 709 water storage pits, and afforestation area of 2.8 km 2 was built in the area. The insurance ratio of this project is 0.5% and the social, economic and ecological effects are obvious.