基于GIS的广东省滑坡灾害区划研究  

Study on regionalization of landslides based on GIS in Guangdong Province

作　　者：魏平新[1] 汤连生[1] 张建国 廖志强[1] 廖化荣[1] 

机构地区：[1]中山大学地球科学系,广州510275 [2]广东省环境地质监测总站,广州510510

出　　处：《水文地质工程地质》2005年第4期6-9,共4页Hydrogeology & Engineering Geology

基　　金：国家自然科学基金项目 (5 0 2 790 5 6) ;广东省自然科学基金项目 (0 3 160 1) ;广东省科技计划重点项目(2 0 0 3C3 3 3 0 1)

摘　　要：以广东省小流域分布图为底图,在详细收集全省历史滑坡及现代滑坡资料的基础上,编制了全省滑坡灾害分布图,在ArcGIS8 3平台上,首先将两图进行空间叠加,生成了全省滑坡灾害易发程度分区图,以此分区图与广东省地形坡度、地层岩性、地貌分布、降雨分布图叠加分析,结果表明:广东省滑坡灾害易发区主要发生在地形坡度在10°～45°之间,地貌分布多为中、小起伏山地以及丘陵地区,地层岩性多为极硬、次硬及软硬相间岩层,以及高降雨区。Using the distribution map of small basins in Guangdong Province as base map, based on the collection of the data of historical landslides and contemporary landslides, the distribution map of landslide hazards of the province is completed. On the ArcGIS8.3 platform, first, the two maps are analyzed spatially to create the distribution map of susceptibility degree. Then, combined with terrain gradient, stratum lithology, geomorphology and rainfall of Guangdong Province, the result shows that the landslides mainly occur in the area with slope angle of 10 to 45 degree, small mountain or hilly land, the stratum of most hard, hard or alternatively distributed soft and hard rock, and strong rainfall.

关 键 词：小流域 滑坡 ArcGIS8.3 

分 类 号：P642.22[天文地球—工程地质学]