| 滇池SRTM DEM数据的流域特征自动提取 |
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| 引用本文： | 余杰,左小清,唐从国.滇池SRTM DEM数据的流域特征自动提取[J].测绘科学,2011,36(2):189-191. |
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| 作者姓名： | 余杰 左小清 唐从国 |
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| 作者单位： | 昆明理工大学国土资源工程学院;中国科学院地球化学研究所环境地球化学国家重点实验室; |
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| 摘 要： | 以滇池流域为试验对象,在NASA发布的3弧秒SRTM DEM数据的基础上,运用Arc Hydro Tools进行流域特征的提取,结果表明,以3弧秒的SRTM数据为基础提取的流域河网与水利部门提供的数字河网基本相符,而提取的流域面积与实际流域面积十分接近,显示了SRTM DEM数据在中小型湖泊流域地表水文模拟方面的优势.
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| 关 键 词： | SRTM DEM 自动提取 流域特征 河网 |
Realizing automatic extraction of Dianchi Lake watershed characteristics based on STRM DEM by ArcGIS |
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| YU Jie,ZUO Xiao-qing,TANG Cong-guo.Realizing automatic extraction of Dianchi Lake watershed characteristics based on STRM DEM by ArcGIS[J].Science of Surveying and Mapping,2011,36(2):189-191. |
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| Authors: | YU Jie ZUO Xiao-qing TANG Cong-guo |
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| Institution: | (①Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;②State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China) |
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| Abstract: | In this paper,taking the basin of Dianchi Lake as an example,based on 3″SRTM DEM which was issued by NASA,the watershed characteristics could be extracted automatically by Arc Hydro Tools.The results showed that the river network was in accord with the digital river network which was obtained from the Water Department,and the extraction of drainage was close to the actual drainage area.It indicated the advantage of SRTM DEM in hydrologic simulation of the surface for small lake basin. |
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| Keywords: | SRTM DEM automatically extracting watershed characteristic river network |
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