| 分布式水文模型子流域划分中界河、海岸线的处理研究 |
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| 引用本文： | 雷晓辉,周祖昊,丁相毅,贾仰文,田雨.分布式水文模型子流域划分中界河、海岸线的处理研究[J].水文,2009,29(6). |
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| 作者姓名： | 雷晓辉 周祖昊 丁相毅 贾仰文 田雨 |
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| 作者单位： | 中国水利水电科学研究院水资源研究所,北京,100038 |
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| 基金项目： | "十一五"国家科技支撑计划课题"松辽流域水资源全口径评价及旱情预测关键技术研究"，国家自然科学基金创新研究群体基金项目--流域水循环模拟与调控 |
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| 摘 要： | 流域划分是分布式水文模型最重要的基础工作之一.有的区域以界河或者海洋为边界,界河、海岸线上河流出口点众多,如果按照传统流域划分方法,不仅出口点定位工作量大,而且容易遗漏部分小的河流出口点,导致模拟范围与研究区域偏离过大.针对这些问题,本文提出了一种子流域划分过程中界河、海岸线的处理方法.即,通过对DEM进行特殊处理,生成界河、海岸线的模拟河网,然后选择界河的末端和海岸线的任意一端作为出口点,从而大大减小了出口点选择的工作量,提高了模拟范围与研究区域吻合的程度.该算法被成功应用到松辽流域,该区域西北面、北面、东面、东南通过国际界河和跨境河流与蒙、俄、朝三国相邻,南面比邻黄、渤海.
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| 关 键 词： | 子流域划分 界河 朝三国相邻 DEM修正 松辽流域 |
How to Process Boundary Rivers and Coastline in Watershed Subdivision of Distributed Hydrological Model |
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| LEI Xiao-hui,ZHOU Zu-hao,DING Xiang-yi,JIA Yang-wen,TIAN Yu.How to Process Boundary Rivers and Coastline in Watershed Subdivision of Distributed Hydrological Model[J].Hydrology,2009,29(6). |
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| Authors: | LEI Xiao-hui ZHOU Zu-hao DING Xiang-yi JIA Yang-wen TIAN Yu |
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| Institution: | LEI Xiao-hui,ZHOU Zu-hao,DING Xiang-yi,JIA Yang-wen,TIAN Yu(Institute of Water Resources,China Institute of Water Resources and Hydropower Research,Beijing 100038,China) |
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| Abstract: | Watershed division,as one of the most important fundamental work for distributed hydrological model,usually takes boundary rivers or coastline as the border in some watersheds. However,since there are many river outlets for the boundary rivers or coastline,it is hard to position the outlets and even miss some small outlets according to the traditional watershed division methods, and the simulated watershed would be with great deviation compared with the research area.As far as the problems above concerned,this paper hereby proposed a processing method for boundary rivers and coastline during watershed subdivision,which was realized through having special treatment to DEM to produce the simulated river network of boundary rivers and coastline,and selecting the end of the boundary rivers or any end of the coastline as the outlets.In this way,the work on outlet selection will be greatly facilitated and the coincidence between simulated watershed and research watershed will be promoted. At present,the processing method has been successfully applied to the Songliao River Basin, which meets Mongolia, Russia and North Korea in northwest, north, east and southeast through international boundary rivers and cross-national rivers and is next to the Yellow Sea and Bohai Sea. |
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| Keywords: | watershed subdivision boundary river coastline DEM revision Songliao River Basin |
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