A research on atlas of slope-correction derived from DEM with different spatial resolutions

摘要

Three typical landforms,Liaohe plain, middle of Shandong low mountain hills, southwest of Sichuan alpine, were selected as studying areas, the national 1∶50000 DEM were chosen as Data source, got DEM of 100m resolution by resampling DEM of 5m at every area. The slope extract by DEM with different resolutions were classified and superposed to get the atlas of slope-correction from different terrains. Then the accuracy of atlas of slope-correction were evaluated according to choose testing areas. The result shows that there is a lot of difference in atlas of slope-correction of different areas, but when referred to a special landform, there will be a perfect result according to transforming the slope extracted by low resolution DEM by atlas of slope-correction which can be represented by given landform.