灾害学Issue(1)：124-129,6.DOI:10.3969/j.issn.1000-811X.2015.01.024
证据权法在滑坡易发性分区中的应用--以贵州桐梓河流域为例
Application of Weights of Evidence Method in Landslide Susceptibility Zoning---A Case Study on Tongzi River Basin in Guizhou
摘要
Abstract
Weights of evidence method is applied in landslide susceptibility zoning of the study area.The main data sources used are logging data of disaster points of historical landslides,geological map,topographic map and digital elevation model.Firstly,the data sources are processed to generate seven evidence layers as lithology, distance from faults,elevation,slope,slope direction,distance from road,and distance from the river.Based on ArcGIS platform,overlay analyses are done between each evidence layer and landslide hazard point layer.The con-tinuous data are classified by using the cumulative weight method and then the weights of the continuous data and classification data factor rating contributed to landslide hazard are calculated.Conditional independence test are done to each two evidence layers,four groups of evidence layers are chosen in a final susceptibility index calcula-tion to get at last four pieces of susceptibility results maps.The calculation results are validated by curve method, which indicate that factor combination 1 is the best.The study area is divided into three types according to suscepti-bility index as of high,moderate and low susceptibility,and overlay analysis is done to the partition map and histor-ical disaster points.The results show that the evaluation results and the hazard point distribution are consistent,in-dicating the feasibility of application of Weights of Evidence and landslide hazard susceptibility zoning.关键词
证据权法/滑坡/易发性分区/桐梓河流域/贵州Key words
Weights of Evidence/landslide/susceptibility zoning/Tongzi River Basin/Guizhou分类
天文与地球科学引用本文复制引用
范强,巨能攀,向喜琼,黄健..证据权法在滑坡易发性分区中的应用--以贵州桐梓河流域为例[J].灾害学,2015,(1):124-129,6.基金项目
国家自然科学基金 （）
