基于RS和GIS的西藏噶尔县地质灾害危险性评价

Risk evaluation of geological hazard based on RS and GIS in Gar country of Tibet

以GF-1、GF-2国产影像为遥感数据源,对噶尔县全域进行遥感地质灾害解译,并根据其孕灾地质背景,收集处理噶尔县的坡度、岩性、构造、植被、水系、地震、人类工程活动及已知地灾点为评价因子,通过层次分析法建立评价体系,得到噶尔县地质灾害危险性分区图,对噶尔县地质灾害防治规划有指导意义。

Using GF-1 and GF-2 images as remote sensing data sources,the remote sensing interpretation of geological disasters in the whole region of Gar County was carried out,and based on the geological background conditions of disasters,by using slope,lithology,structure,vegetation,earthquake,river,human activities and known hazards sites as evaluation factors,an evaluation system is established by using analytic hierarchy process(AHP),and the zoning map of geological hazards in Gar County is obtained,it has guiding significance for the prevention and control planning of geological hazards in Gar County.