ZHAO Bang yuan, TANG Guo an, MA An li, et al. Producing of 1:250000 Map Scaled DEM in Different Terrain Roughness[J]. Bulletin of Soiland Water Conservation, 2002, 21(2): 45-48.
ZHAO Bang yuan, TANG Guo an, MA An li, et al. Producing of 1:250000 Map Scaled DEM in Different Terrain Roughness[J]. Bulletin of Soiland Water Conservation, 2002, 21(2): 45-48.DOI:
Grid based DEM is a critical basic geo spatial data base in the analysis of regional topography feature. 1:250000 map scaled DEM is regarded as an important basis for the middle scaled investigation of soil erosion characteristics. Taking three areas of different terrain roughness as test areas
the effective procedures and methodology for the producing of DEM are probed into. In addition
by means of comparative method
the DEM accuracy were investigated
which can be regarded as possessing critical importance for the setting up DEMs
as well as evaluate their practicability and applicability in the field of regional soil erosion research in these corresponding areas.