【作者】 胡稳； 杨广斌； 罗毓融； 安霞霞；

【Author】 Hu Wen;Yang Guang-bin;Luo Yu-rong;An Xia-xia;School of geography and Environmental Science,Guizhou Normal University/Guizhou Mountain Resources and enviromental Remote Sensing Application Laboratory;

【机构】 贵州师范大学地理与环境科学学院/贵州省山地资源与环境遥感应用重点实验室；

【摘要】 在考虑纯喀斯特、亚喀斯特和非喀斯特三种不同喀斯特类型区特点的基础上,首先构建贵州北盘江流域地质灾害敏感性评价指标体系;然后采用层次分析法计算出各评价指标的权重,使用ArcGIS对各评价指标图层进行提取、计算、重分类等处理,得到贵州北盘江流域的地质灾害敏感性评价;接着根据自然段点法确定地质灾害敏感度等级,使用收集的历史地质灾害点来验证评价结果;最后分别提取出三种不同喀斯特类型区的地质灾害敏感度等级,并进行统计和分析。结果显示:贵州北盘江流域内,地质灾害敏感度等级为敏感或极敏感的区域分布面积占比表现出纯喀斯特>亚喀斯特>非喀斯特的特征。说明喀斯特越典型,地质灾害敏感度越高。更多还原

【Abstract】 Based on the consideration of Typical Karst,Semi-Karst and Non Karst,three different Karst types characteristics,firstly,the geological hazards in Guizhou Beipan River basin sensitivity evaluation index system;Then the weight of each evaluation index is calculated by analytic hierarchy process(AHP),and the ArcGIS is used to extract,calculate and reclassify each evaluation index layer,The geological disasters sensitivity evaluation of Guizhou Beipan River Basin value;Then the sensitivity grade of geological hazard is determined according to the natural segment point method.Using the collected historical geological hazard points to verify the evaluation results;Finaly,the degree of geological hazard sensitivity of three different Karst types is extracted respectively.And the statistics and analysis are carried out.The results showed that:Guizhou Beipan River basin within the geological disaster area for sensitive level sensitive or highly sensitive ratio showed pure Karst > Karst > Karst sub features.It shows that the more typical Karst is,the higher the sensitivity of geological hazard.更多还原