基于GIS和本底因素贡献权重模型的区域滑坡危险性评价_以重庆万州为例.docx

基于 GIS 和本底因素贡献权重模型的区域滑坡危险性评价——以重庆万州为例王萌 1,2，乔建平 1，吴彩燕 3WANG Meng1,2, QIAO Jian-ping1, WU Cai-yan31. 中国科学院山地灾害与地表过程重点实验室，四川 成都 610041；2. 中国科学院研究生院，北京 100049；3. 西南科技大学，四川 绵阳 6210101. Key Laboratory of Geo-surface Process and Mountain Hazards, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China；2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China；3. Southwest University of Science and Technology, Mianyang 621010, Sichuan, China摘要：滑坡危险性评价是滑坡风险管理的重要内容和基础，其结果的好坏直接影响到管理的成效。 在目前全国还没有统一评价方法和体系的情况下，以重庆市万州区为研究区域，利用一种物理意义明确并且易于操作的评价模型—— 本底因素贡献权重 模型，在 GIS 软件中进行滑坡危险性评价。 经过检验符合实际情况：高危险度区占全区面积的 22.3%；中危险度区占全区面积的40.7%；低危险度区占全区面积的 37.0%；高、中危险度区所包含的滑坡个数占到全区滑坡总数的 77.6%。关键词：GIS；本底因素贡献权重模型；滑坡危险性评价；重庆市万州区中图分类号：P694文献标志码：A文章编号：1671-2552（2008）11-1802-08Wang M, Qiao J P, Wu C Y. Regional landslide danger assessments based on GIS and the root factor contributing weightmodel: a case study of the Wanzhou District, Chongqing City, China. Geological Bulletin of China, 2008, 27(11):1802-1809Abstract：Landslide danger assessment is the important content and basis of landslide risk management and its results will impact theeffect of management directly. There is no unifying method or system of assessments of landslide hazards in China till now. In this pa - per, by taking the Wanzhou District, Chongqing Municipality, as the research target, the authors introduced the “root factor con- tributing weight model” to assess the landslide danger level, which has a definite physical meaning and is easy to operate, and accom - plished the landslide danger assessment in the GIS software. The results accord with the actual conditions by test. The highly dangerous places cover 22.3% of the area of the whole district; the moderately dangerous places, 40.7% ; and the low dangerous places, 37.0% . The number of landslides contained in highly and moderately dangerous places makes up 77.6% of the total number of landslides i