LANDSLIDE RISK MANAGEMENT INFORMATION SYSTEM FOR COUNTIES: ILLUSTRATED WITH A CASE STUDY FOR NINGQIANG COUNTY

Nowadays, landslide risk management is an effective way for disaster prevention and mitigation, and has been widely used in the world. For the development of the county landslides risk management information system(CLRMIS),the paper discusses the characteristics, requirements and technical processes of the CLRMIS,constructs the system structure and functional modules, and develops the system by using geographic information techniques. We chose Ningqiang County, Shaanxi Province as the area for testing CLRMIS.Our work emphasized on the hazard analysis, consequence analysis, and the risk evaluation. Based on the CLRMIS,the county area’s landslides hazard and consequence were studied respectively by using information value method and weighted superposition method, the individual’s were studied by using expert scoring method. The landslides general risk, dynamic risk and forecasting were evaluated based on the qualitative risk analysis(QRA)matrix. The results show that the CLRMIS is able to provide an effective support for the landslides management, risk analysis, and prevention and mitigation to local authorities.