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《Science of Surveying and Mapping》 2011-03
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Effect of DEM interpolation on the slope

ZHOU Guan-nan①②,Tashpolat.Tiyip①②,YIN Lei③,ZHOU Dai④(①College of Resources and Environment Science,Xinjiang University,Urumqi 830046,China;②Key Laboratory of Oasis Ecology,Xinjiang University,Urumqi 830046,China;③Reconnaissance and Layout Department of Xinjiang Production and Construction Corps,Xinjiang Shihezi 832000,China;④Faculty of Earth Science and Resources,China University of Geoscience,Beijing 100083,China)  
Taking the Delta Oasis of Ugan and Kuqa rivers in arid and semi-arid region as research region,using the digital contour with the scale of 1:50 000 as the data source,this paper compared the slope with the cell size of 25m,50m,100m,150m,200m which generated from the DEM with four interpolation algorithms.The results showed that there were significant effect on the slope among the algorithms when the slope 27°,but there were no significant effect on the slope when the slope 27°.With different resolution,there were significant effect on the slope among the algorithms when the slope 12°,when the slope 12°,the effect was not obviously.Thus,when the slope was comparatively large,there were no significant effect on the slope among the algorithms and resolution.
【Fund】: 国家自然科学基金项目(40861020);; 教育部科学研究重点项目以及新疆自然科学基金项目(200821128);; 新疆绿洲生态重点实验室开放课题(编号:XJDX0201-2007-01 XJDX0201-2008-03);; 新疆大学青年教师科研启动基金(QN070122);; 高等学校博士学科点专项科研基金(20050755002)
【CateGory Index】: P208
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【References】
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