基于信息量模型的中国滑坡灾害风险区划研究

Risk zonation of landslide in China based on information content model

基于信息论发展起来的信息量模型是进行区域滑坡灾害风险评估的一种有效方法。GIS技术为滑坡灾害在不同模型条件下的风险评估提供了有效地技术支持。经过研究,开发出了基于MapGIS软件平台的滑坡灾害风险分析系统。在该系统支持下,采用信息量模型对中国范围内的滑坡灾害进行危险性分析,进而进行区域社会经济易损性分析,并在此基础上进行最终的滑坡灾害风险评估。

With the development of hazard prevention and reduction in China, it is imperative to assess regional landslide hazards. Information value model, which is based on the Information Theory, is the valid method for analyzing the risk of regional geo-hazards. The risk assessment supported by GIS is one of the most important directions in geo-hazard study. Based on the author's studies, a risk analysis system of landslides has been developed which is explored on the basis of software MAPGIS. This paper deals with the risk zonation of the regional landslide hazards of China supported by this system, and adopts information content model in the analysis of geo-hazard, analysis of the vulnerability as well as the risk assessment of the geo-hazard. The result is reasonable and practical to a certaiu degree.