关键词: 泥石流, 地貌系统信息熵, 危险性评价

Abstract: Debris flow is the special disaster occurred in the catchments, which is controlled by the geomorphic system. The theory of geomorphic information entropy which can be used to indict the characteristics of evolution of landforms is the combination of information and Strahler's area-altitude analysis. So, it is possible to use geomorphic information entropy to study debris flow catchments and make hazard assessment of debris flow catchments. This paper carries the geomorphic information entropy analysis on the geomorphologic evaluation stage of 21 debris flow catchments in Hadabei, which is located in the southwest part of Xiuyan County with damaged debris flows in 1982. According to the result, the geomorphic information entropy analysis on debris flow catchments is objective, credible, easy to carry out and helpful for evaluation, warning and reduction of debris flow.

Key words: debris flow, geomorphic information entropy, hazard assessment