| 数字流域水系构建方法浅析 |
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| 引用本文： | 李春红,任立良,达卫特,王美荣. 数字流域水系构建方法浅析[J]. 水文, 2002, 22(6): 1-4 |
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| 作者姓名： | 李春红 任立良 达卫特 王美荣 |
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| 作者单位： | 河海大学水资源环境学院,江苏,南京,210098 |
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| 基金项目： | 国家重点基础研究专项经费资助项目(G1999043400)，国家自然科学基金资助项目(40171016) |
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| 摘 要： | 基于辽河水系老哈河流域栅格DEM数据,分别采用数字高程流域水系模型(DEDNM)、河流工具RiverTools、地理信息系统Arcview软件,根据地形提取水系信息,构建数字流域,并分析比较了三者在凹陷区域识别、水系、子流域及其拓扑关系生成方面的差异。总的来说,数字高程流域水系模型的可修改性较好;而RiverTools软件可视化程度高,使用方便,并具备强大的图示和地形分析功能;Arcview基于地理信息系统(GIS)更易于进行二次开发。
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| 关 键 词： | 数字高程模型 数字流域 水系 地理信息系统 |
| 文章编号： | 1000-0852(2002)06-0001-04 |
| 修稿时间： | 2002-03-14 |
Preliminary Analysis on the Method of Building Digital Basin |
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| LI Chun-hong,REN Li-liang,ERGICHO Dawit,WANG Mei-rong. Preliminary Analysis on the Method of Building Digital Basin[J]. Hydrology, 2002, 22(6): 1-4 |
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| Authors: | LI Chun-hong REN Li-liang ERGICHO Dawit WANG Mei-rong |
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| Abstract: | On the basis of raster DEM data in the Laohahe River Basin,a comparison is made in the aspects of identification and treatment of depression area,generation of drainage network,sub -catchments and topological relationship amongst three methods of building digital basin with the extracting drainage network,viz.Digital Elevation Drainage Network Model(DEDNM),River network analysis Tools(RiverTools)and geographic information system software(Arcview).As a result,DEDNM has the advantage of better modification,while RiverTools performs better on convenience,strong practicality,and visualization in drawing and topographical analysis.And Arcview would be a better choice for the second or further development. |
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| Keywords: | digital elevation model digital basin drainage network geographic information system |
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