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冲沟是生态环境治理和控制泥石流活动的关键地段。结合云南南涧县城后山泥石流生物生态工程治理试验示范研究，总结出由土石混砌与土木筑造结构的生物谷坊，浆筑结构拦坝和谷坊等组成的沟道侵蚀治理方法，并成功地进行了相应的生物坝系建设，筛选出大叶桉，赤桉，马鹿花，台湾相思，马占相思，新叶合欢，夹竹桃等一批适宜干热生境和沟道植被恢复及防护林建设的植物种类，同时采取冲沟与谷坡同时整治，生物治理与调蓄水措施相结合的坡面治理方法。结果表明，这些生物生态工程措施对于防止沟床侵蚀，抑制泥石流活动和护床固坡效果显著。
Gully is the key area for ecological environment control and debris flow control activities. Combining with the experimental research on the bio-ecological engineering of debris flow in Houqingshan, Nanjian County, Yunnan, this paper summarizes the treatment method of channel erosion composed of bio-valley, earthworks and dam and valley Successfully carried out the corresponding construction of biological dam system, screened Eucalyptus, Eucalyptus grandis, red deer, Acacia mangium, Acacia mangium, Acacia mangium, oleander and a number of suitable dry heat and channel vegetation restoration and shelterbelts Construction of plant species, while taking the same time gully and valley slope remediation, biological control and regulation of water measures combined slope management methods. The results show that these bio-ecological engineering measures have significant effects on preventing gully erosion, inhibiting debris flow activities and protecting the slope.