水文地质工程地质2018，Vol.45Issue(2)：150-158,9.DOI:10.16030/j.cnki.issn.1000-3665.2018.02.23
基于信息量的长白山地区泥石流易发性评价
Susceptibility assessment of debris flow based on GIS and weight information for the Changbai mountain area
摘要
Abstract
Susceptibility evaluation is conducted at the Changbai Mountain area where debris flows frequently occur.Thirteen influence factors are chosen as the evaluation indices,including the slope height,slope,aspect,annual precipitation,annual evaporation,density of debris flow,population density,tectonism,fluviation,formation lithology,groundwater types,geomorphological types and land use types.The frequency curve of debris flow and the magnitude curve of information are drawn based on 110 debris flows points.Continuous indices classification is based on catastrophe points on the curve and discrete indices classification is based on the existing standards.The grid data model of GIS platform and weight information model are used to obtain the information values of each index.The susceptibility evaluation results show that the high susceptibility areas are characterized by poor tectonism,closing to rivers and tectonic lines,erosion and denudation landforms,and agricultural and residential lands.The AUC value is conducted as the accuracy of the susceptibility evaluation of debris flow.The accuracy is 93％.The total area of higher susceptibility areas and high susceptibility areas accounts for 19％ of the study area,and most of the areas are safe.关键词
地质灾害/泥石流/易发性评价/信息量/GIS/长白山地区Key words
geological hazard/debris flow/susceptibility assessment/weight information value/GIS/Changbai Mountain area分类
天文与地球科学引用本文复制引用
张以晨,秦胜伍,翟健健,李广杰,彭帅英,刘绪,陈骏骏..基于信息量的长白山地区泥石流易发性评价[J].水文地质工程地质,2018,45(2):150-158,9.基金项目
国土资源部公益性科研专项(201211095-6) （201211095-6）
吉林省科技厅科技发展计划项目(20170101001JC) （20170101001JC）
国家自然科学基金青年基金(41202197) （41202197）
