滑坡编目的空间数据分析及实例应用

Analyses and example application of spatial data for landslide inventory

结合滑坡环境因素处理的一些重点问题,对滑坡编目典型空间数据集进行了分析.在滑坡编目空间数据集分析基础上,利用GRASS GIS软件对汶川"5.12"地震映秀极震区地震滑坡作了编目,获得了编目区内的滑坡类型、分布、几何特征信息及滑坡概率密度与滑坡面积之间的关系.该滑坡编目实例表明利用各类空间数据集和3S技术可快速进行区域性滑坡编目.

Combined with some important issues concerning landslide environmental factors, the typical spatial data sets of landslide inventory were analysed. Based on spatial data sets of landslide inventory discussed above, earthquake-induced landslides in the Yingxiu meizoseismal area of 5.12 Wenchuan earthquake were inventoried by use of GRASS GIS. From the earthquake-induced landslide inventory, the landslide types, distributions, geometry information and correlation between landslide probability density and landslide area were extracted. It can be concluded from the earthquake-induced landslide inventory that landslide inventory in a large region can be made rapidly by means of application of spatial data sest 3S techniques.