人民黄河
人民黃河
인민황하
Yellow River
2014年
7期
25-28
,共4页
DEM%GIS%流域分割%子流域分类
DEM%GIS%流域分割%子流域分類
DEM%GIS%류역분할%자류역분류
DEM%GIS%basin segmentation%sub-basin classification
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。
在流域數字化的大揹景下,基于 DEM 數據,以三川河流域為研究對象,應用 GIS 技術,探討瞭流域分割及分類的原理和方法;實現瞭流域河網的自動提取及流域的分割;選取流域麵積、河網密度及形狀繫數為分類因子,採用分層分類方法構建瞭子流域分類框架體繫,併將得到的52箇子流域劃分為8種類型。
재류역수자화적대배경하,기우 DEM 수거,이삼천하류역위연구대상,응용 GIS 기술,탐토료류역분할급분류적원리화방법;실현료류역하망적자동제취급류역적분할;선취류역면적、하망밀도급형상계수위분류인자,채용분층분류방법구건료자류역분류광가체계,병장득도적52개자류역화분위8충류형。
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.