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《Journal of Glaciology and Geocryology》 2012-01
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GIS-based Analysis of Landslide and Debris Flow Hazard in Lanzhou

QI Yuan1,LIU Yong2,YANG Zheng-hua3,XU Zhen1,FANG Miao1(1.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu 730000, China;2.Land Resources Survey and Geological Environment Monitoring Center of Lanzhou Municipality,Lanzhou Gansu 730030, China;3.Institute of Surveying and Mapping of Lanzhou Municipality,Lanzhou Gansu 730030,China)  
Frequent geologic disasters cause huge impact on human society.Remote sensing,geographic information systems,global positioning systems and network technology play increasingly great role in disaster reduction.In Lanzhou,the regional lithology,tectonic faults,seismic activity,surface erosion and undulating terrain have contributed to crushing landslide and debris flow hazards.Summer torrential rains and human engineering activities induce disasters in every summer.Through establishing spatial database of regional landslide and debris flow disasters,using spatial analysis,the expertise model and Logistic model for predicting the probability of landslide and debris flow hazards are achieved in this study.The predicted landslide accuracy of Logistic model and the empirical model reach 85.3% and 74.2%,respectively.The predicted debris flow accuracy of Logistic model and the empirical model reach 80.5% and 90.5%,respectively.
【Fund】: 中国科学院“西部之光”人才计划资助项目“兰州市地质灾害脆弱性及其防治的信息化研究”(Y028A11001)资助
【CateGory Index】: P642.23
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