Landslide vulnerability evaluation: A case study from Sichuan, China

Selecting Sichuan Province as the study area, setting rainfall-induced shallow landslide hazard for the research objectives, choosing slope, fault zone, rivers, lithology, soil type and vegetation as the main evaluation factors of the environmental vulnerability assessment. Based on the landslides disaster database since 5.12 Earthquake in Sichuan Province, the weights of the evaluation factors are determined. Producing 2008-2010 environmental vulnerability assessment maps in Sichuan Province Using Analytic Hierarchy Process with the GIS software, and the Spatial resolution of which is 250 meters. The risk of the environmental vulnerability assessment maps are divided into five levels: Slight(I), mild(II), moderate(III), high(IV) and the highest (V) risk areas. From this study, we conclude that vulnerability is with temporal and spatial distribution, and it can be quantified effectively using AHP model.