基于DEM的流域分割及子流域分类  

Study on Basin Segmentation and Sub Basin Classification Based on DEM

作　　者：何毅[1] 蔺彬彬[2] 

机构地区：[1]四川电力职业技术学院,四川成都610071 [2]山西省漳泽水库管理局,山西长治046000

出　　处：《人民黄河》2014年第7期25-28,共4页Yellow River

摘　　要：在流域数字化的大背景下,基于DEM数据,以三川河流域为研究对象,应用GIS技术,探讨了流域分割及分类的原理和方法;实现了流域河网的自动提取及流域的分割;选取流域面积、河网密度及形状系数为分类因子,采用分层分类方法构建了子流域分类框架体系,并将得到的52个子流域划分为8种类型。In the background of digital watershed,based on DEM data,taking Sanchuan River basin as a research object,applying GIS technology, the principles and methods of basin segmentation and sub-basin classification were discussed;automated extraction of river network and basin seg-mentation were realized;basin area,drainage density and basin shape were selected as the main classifying factor of sub-basin,through the method of hierarchical classification,sub-basin classifying standard system was built,52 sub-basins were divided into eight types.

关 键 词：流域分割 子流域分类 

分 类 号：P333[天文地球—水文科学]