Analysis and Evaluation of Extreme Rainfall Trends and Geological Hazards Risk in the Lower Jinshajiang River

This research studied the risk assessment of geological hazards, such as landslides and debris flow, under time series trend characteristics extreme precipitation events in last 60 years nine typical regions lower Jinshajiang River Basin. Nine indicators, including slope, engineering rock group, slope structure type, distance to road, topographic relief, fault, water system, vegetation cover profile curvature, were selected index factors for landslide susceptibility evaluation, information quantity method was used obtain evaluation study area. Based on spatial analysis function GIS derive hazard zoning rainfall trend. The results showed that areas with high trends have higher densities development they are concentrated, while low relatively less development, what exists is scattered.