基于GIS的中国滑坡灾害风险分析

Risk assessment of landslide in China using GIS technique

随着我国减灾防灾工作的深入开展,对大范围区域性的滑坡灾害进行风险评估势在必行。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的技术支持。经过多年研究,作者开发出了基于MapGIS软件平台的滑坡灾害风险分析系统。在该系统支持下,采用信息量模型和专家打分模型对我国全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。分析结果具有一定的指导意义和实用价值。

With the development of hazard prevention and reduction in China, it is imperative under the situation that the assessment of regional landslide hazard, and it is one of the most important directions that the risk assessment supported by GIS in geo-hazard study. Based on the author抯 studies in the last years, 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 hazard of China supported by this system. The paper adopts the information value model and the grade model in the analysis of Geo-hazard, analysis of the vulnerability, and the risk assessment of the Geo-hazard. The analytic result is reliable and applied.