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[1]CHEN Ji-long,WU Wei,LIU Hong-bin.Effect of DEM Interpolation on the Slope and Aspect[J].Research of Soil and Water Conservation,2008,15(06):14-17.

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Effect of DEM Interpolation on the Slope and Aspect

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 15 Number of periods: 2008 06 Page number: 14-17 Column: Public date: 2008-12-20

Title:: Effect of DEM Interpolation on the Slope and Aspect

Author(s):: CHEN Ji-long¹, WU Wei², LIU Hong-bin¹; 1. College of Resource and Environment, Southwest University, Chongqing 400716, China;
2. College of Computer and Information Science, Southwest University, Chongqing 400716, China

Keywords:: DEM; slope degree; slope direction; terrain analysis

CLC:: S157;TP79

DOI:: -

Abstract:: In many cases of the research and application,digital elevation data may be the only source for DEM generation with algorithms,which are available or affordable.It is known that the analytic result from the DEM can vary in quality depending on their algorithms.Taking hilly region in southern China as research region,using the digital contour with the scale of 1:10 000 as the source,this paper compared the slope,aspect from the DEM generated with five algorithms,the results showed that there were significant effect on the slope among the algorithms when the slope<30°,but there were no significant effect on the slope among the algorithms and resolution when the slope>30°.Furthermore,the result also showed that DEM interpolated with ANUDEM is the most precise,however,there was no flat area in the result from the terrain analysis in the region with extensive flat area,so it can’t be suitable for performing terrain in such region.

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