摘要
地形坡度分级是土地管理、地理信息服务的重要内容。基于DEM数据,按照设定的坡度分级标准,探讨了地形坡度分级的数据内插、坡度分级生成分级多边形合并方法。利用SRTM数据、GIS平台,以太原市为实验样区,通过内插得到(30m×30m)数字高程模型。基于数字高程模型,提取不同分辨率的太原市地形坡度信息,以90m分辨率的坡度分级图为例,合并小图斑到相邻图斑中,完成地形坡度分级图。
Terrain slope grading is essential for land management and geographic information service.Based on the DEM data and given slope grading criteria,the paper discusses interpolation,slope grading generation,and polygons merging method.With SRTM data and GIS platform,taking Taiyuan area as a sample,Digital Elevation Model(30m*30m) is achieved through the interpolation.On the Digital Elevation Model,terrain slope information of Taiyuan with different resolutions is extracted.Taking the slope grading map(resolution is 90m) as an example,small polygons are merged with adjacent polygons so that the grading map is accomplished.
出处
《山西煤炭》
2012年第9期44-46,共3页
Shanxi Coal
