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《Scientia Geographica Sinica》 2004-02
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Key Technique for Establishing Digital Elevation Model (DEM) at Provincial Scale ——Case Study of Jiangsu Province

WANG Ku, YU Dong-Sheng, SHI Xue-Zheng (Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008)  
The map for producing DEM at provincial scale include mountains, plains, hills and crossing different projection zones, the data are very large, so careful preparation of data are needed to produce eligible DEM. Approaches of error control and some detailed methods are summarized in the paper. Key technique of finding errors and methods of establishing DEM of Jiangsu Province are introduced by using ARCINFO and ARCVIEW software. Results show that using the technique can quickly find errors in vector data. High precise DEM can be achieved by this method. The technique and method are feasible to establish eligible DEM for large areas at provincial scale. And the DEM established by this method is more suitable to apply in monitoring soil and water losses than other methods.
【Fund】: 国家重点基础研究规划项目(G1999011810);; 中国科学院知识创新工程领域前沿项目(ISSASIP0201);; 中国科学院南京土壤研究所所长基金(005102)。
【CateGory Index】: S159
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