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A preprocessing program for a distributed hydrological model: development and application

机译：分布式水文模型的预处理程序：开发和应用

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摘要

A preprocessing program for a distributed hydrological model is very important because it will greatly influence the results of runoff simulation. Runoff simulations include several procedures, such as the determination of flow directions, definition of runoff routing orders, estimation of flow accumulation areas and extraction of drainage networks, etc. In order to simplify the development work and to improve the efficiency of model development, a preprocessing program was developed that can work independently with a graphic user interface. Only digital elevation model (DEM) data are required in this program and characteristics of the program include the following components: (1) a method for the determination of flow direction without sink filling; (2) a leaf clipping method for watershed partitioning; and (3) the determination of the order of runoff routing according to a top-down method. Finally, a case study in the Lhasa River basin is presented, and three case studies in the Wei River, Zhangweinan River and Sanchuan River basins are selected to validate the program. The results show that disconnected or parallel drainage networks can be avoided by using the preprocessing program, especially in flat areas, which can significantly improve the development of distributed hydrological models.
机译：分布式水文模型的预处理程序非常重要，因为它将大大影响径流模拟的结果。径流模拟包括确定径流方向，定义径流路径顺序，估算流量积聚面积和提取排水网络等多个程序。为了简化开发工作并提高模型开发效率，开发了可以与图形用户界面独立工作的预处理程序。该程序仅需要数字高程模型（DEM）数据，并且该程序的特征包括以下组件：（1）一种无需水槽填充的确定流向的方法； （2）分叶分割的分水岭方法； （3）根据自上而下的方法确定径流路径的顺序。最后，以拉萨河流域为例，以渭河，漳渭南河和三川河为例，对三个案例进行了验证。结果表明，通过使用预处理程序可以避免断开或平行的排水网络，尤其是在平坦区域，这可以显着改善分布式水文模型的开发。

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  • 来源
    《Journal of Hydroinformatics》 |2013年第4期|1258-1275|共18页
  • 作者

    Lei Li; Zongxue Xu; Yanli Li; Wenfeng Liu; Lanying Zhang;

  • 作者单位

    Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    digital elevation model (DEM); distributed hydrological model; drainage network; preprocessing program;

    机译：数字高程模型（DEM）;分布式水文模型排水网;预处理程序;

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