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| DEM内插算法对坡度的影响 | |
| 引用本文： | 周冠男,塔西甫拉提·特依拜,尹磊,周岱.DEM内插算法对坡度的影响[J].测绘科学,2011,36(3):162-163,78. |
| 作者姓名： | 周冠男 塔西甫拉提·特依拜 尹磊 周岱 |
| 作者单位： | 1. 新疆大学资源与环境科学学院,乌鲁木齐,830046;新疆大学绿洲生态教育部重点实验室,乌鲁木齐,830046 2. 新疆生产建设兵团勘测规划设计研究院,新疆石河子,832000 3. 中国地质大学土地科学技术学院,北京,100083 |
| 基金项目： | 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) |
| 摘 要： | 本文以干旱、半干旱地区的渭干河-库车河三角洲绿洲为研究区域,利用样区的1:50000的矢量地形图为数据源,通过对不同插值算法生成的DEM计算坡度,坡度计算像元值分别采用25m、50m、100m、1.50m、200m,5个分级.通过对比研究发现:在坡度小于27°时,不同的算法对坡度具有显著的影响,而大干27°时,算法不会... |
| 关 键 词： | DEM 插值 坡度 |
Effect of DEM interpolation on the slope |
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| ZHOU Guan-nan,Tashpolat.Tiyip,YIN Lei,ZHOU Dai.Effect of DEM interpolation on the slope[J].Science of Surveying and Mapping,2011,36(3):162-163,78. | |
| Authors: | ZHOU Guan-nan TashpolatTiyip YIN Lei ZHOU Dai |
| Institution: | ④(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) |
| Abstract: | 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. |
| Keywords: | DEM interpolation slope degree |
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