| 平原河网地区汇水区的划分方法——以上海市为例 |
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| 引用本文： | 左俊杰,蔡永立.平原河网地区汇水区的划分方法——以上海市为例[J].水科学进展,2011,22(3):337-343. |
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| 作者姓名： | 左俊杰 蔡永立 |
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| 作者单位： | 华东师范大学资源与环境科学学院, 上海200062 |
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| 基金项目： | 上海市科学技术委员会重大项目，上海市科学技术委员会基础研究重点项目 |
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| 摘 要： | 借助DEM提取汇水区是分布式水文模型计算和面源污染计算的前提条件.在平坦地区直接使用DEM提取出的水系、汇水区边界与现实情况差异很大.针对现有汇水区提取方法存在的问题,在RIDEM模型的基础上提出了一种平原河网地区汇水区划分的方法,该方法通过将道路、建筑物、水系、沟渠、坑塘等影响径流途径的地物要素融合进DEM,达到细化...
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| 关 键 词： | 汇水区 河网 平原 数字高程模型 汇流 |
| 收稿时间： | 2010-06-15 |
An automated watershed delineations approach for plain river network regions:A case study in Shanghai |
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| ZUO Jun-jie,CAI Yong-li.An automated watershed delineations approach for plain river network regions:A case study in Shanghai[J].Advances in Water Science,2011,22(3):337-343. |
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| Authors: | ZUO Jun-jie CAI Yong-li |
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| Institution: | School of Resource and Environment, East China Normal University, Shanghai 200062, China |
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| Abstract: | The extraction of hydrological information from Digital Elevation Models(DEM) is an initial step in the application of spatially distributed hydrological models.Although,many automated methods have been proposed to extract the drainage structure from DEMs,the realistic river network and watershed boundary may not always be derived from conventional DEM processing methods.As a result,enhanced(or corrective) approaches have been proposed to improve the performance of existing single flow direction(D8) algorit... |
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| Keywords: | watershed river network flat region DEM flow concentration |
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