Abstract: Nanshan scenic spot is the area where geological hazard is rather developed in the urban of Chongqing. Based on field observation and investigation，six risk factors resulting in geological hazard includes: terrain slope，formation lithology combination，geological structure，the thickness of accumulation body，groundwater and engineering activities. The value assignment of index is obtained through expert system，and the weight of index is determined by analytical hierarchy process (AHP); the risk zoning assessment model of geological hazard is established. Hereby，based on GIS platform，the risk zoning of geological hazard of Nanshan scenic spot is identified，including slight hazard area，medium hazard area，high hazard area，extremely hazard area. They take up 65. 2%，18. 1%，13. 2% and 3. 5% respectively in area; and these data are consistent with those of actual situation. The research results can provide certain scientific basis for the comprehensive development of land and resources as well as the environmental protection in scenic spot.

Key words: geological hazard, risk zoning, assessment, GIS platform, Nanshan scenic spot

摘要： 南山风景名胜区是重庆市主城区地质灾害比较发育的区域。基于现场调查和观测，遴选出地形坡度、地层岩 性组合、地质构造、堆积体厚度、地下水和工程活动等6个致灾影响因子，并采用专家系统法进行指标赋值，采用 AHP法确定指标权重;建立了地质灾害危险性因子评价模型，据此基于GIS平台将南山风景名胜区地质灾害危险 性分为轻危险区、中危险区、高危险区和极高危险区，所占面积比例分别为65.2%、18.1%、13.2%和3.5%，与实际 情况基本相符。研究成果可为风景区国土资源综合开发与环境保护提供一定科学依据。

关键词: 地质灾害, 危险性分区, 评价, GIS平台, 南山风景名胜区