基于DEM的北部湾入海河流汇水区及子流域划分

麻德明; 丁绍昆; 谢宜欣

引用本文：

麻德明,丁绍昆,谢宜欣.基于DEM的北部湾入海河流汇水区及子流域划分[J].海洋开发与管理,2016,33(9):99-103

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基于DEM的北部湾入海河流汇水区及子流域划分
麻德明,丁绍昆,谢宜欣
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中国海洋大学环境科学与工程学院;国家海洋局第一海洋研究所;青岛市黄岛区水利局

摘要:

文章基于DEM（SRTM Data，90 m分辨率）数据模型，借助美国ESRI公司的ARC/INFO软件中的ArcHydro模型，采用溯源追踪的方法，基于陆海统筹的理念，对北部湾入海河流进行水文分析，根据汇流能力通过设定阈值提取河网，利用河网和流域出水口划分汇水区和子流域，在此基础上进行叠加分析，计算汇水区和各子流域的面积，并对精度进行检验与评定，为进一步开展基于流域单元的北部湾非点源入海污染总量估算与调控提供必要的基础数据。

关键词: 北部湾经济区水文特征环境治理水系流域水利工程

DOI：

基金项目:国家海洋局第一海洋研究所基本科研业务费专项（2014G18）；海洋公益性行业科研专项（201305023，201305009，201405028）

Division of River Catchment and Sub catchment in Beibu Gulf Based on DEM

MA Deming,DING Shaokun,XIE Yixin

College of Environmental Science and Engineering，Ocean University of China;The First Institute of Oceanography，SOA;Huangdao District Water Conservancy Bureau of Qingdao

Abstract:

The research based on DEM (SRTM Data，90m resolution) data model，with the ArcHydro module of ARC/INFO software，which was developed by United States ESRI Company.By using the method of tracing and tracking，hydrological analysis of the Beibu Gulf rivers was made based on the coordination conception.According to the flow ability by setting threshold extracted of river network，the catchment and sub basin was divided by using river network and catchment outlet.Then the area of the catchment and subcatchment was calculated on the basis of overlay analysis，and the accuracy was tested and assessed.It could provide the necessary basic data to estimate and control the Beibu Gulf nonpoint source pollution based on watershed unit for further research.

Key words: Beibu Gulf economic zone,hydrographic features,Environmental governance,River basin,Water conservancy project