重庆邮电大学学报（自然科学版）2007，Vol.19Issue(3)：276-280,5.
Study on extracting method of single slope surface shape based on DEM:taking Wanzhou district of three gorges reservoir area as example
Study on extracting method of single slope surface shape based on DEM:taking Wanzhou district of three gorges reservoir area as example
ZHOU Qi-gang 1YUAN Li-feng2
作者信息
- 1. Tourism School of Chongqing Technology and Business University, Chongqing 400067,P.R.China
- 2. College of Telecom. and Infor. Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,P.R.China
- 折叠
摘要
Abstract
This paper focused on the extracting method of single slope shape. Applying the software of ARCGIS 9.0, DEM (digital elevation model) was established. From the DEM, topographic characters, including valleys and ridges were extracted. Some valley lines were extended in order to intersect with the ridges nearby. All slope were divided into different slope surface, which enclosed by valleys and ridges. And the slope surface shapes were defined three types, Line Slope, Upper-concave and lower-convex slope, Upper-convex and lower-concave slope, according to their functions. And the judge formula of single slope surface shape was brought forward. Taking Wanzhou District as test area, it indicates that auto-extracting method of single slope surface shape has high precision relatively. This study can provide references to the studies of region geological disasters prevention and cure.关键词
slope surface shape/extracting/DEM/GISKey words
slope surface shape/extracting/DEM/GIS分类
天文与地球科学引用本文复制引用
ZHOU Qi-gang,YUAN Li-feng..Study on extracting method of single slope surface shape based on DEM:taking Wanzhou district of three gorges reservoir area as example[J].重庆邮电大学学报（自然科学版）,2007,19(3):276-280,5.
