基于DEM的流域特征提取研究——以贵州省普定县后寨河流域为例  

Study on the extracting of basin features from DEM in the case of HouZhai river basin,Puding county,Guizhou

作　　者：蒙海花[1] 王腊春[1] 苏维词[2] 

机构地区：[1]南京大学地理与海洋科学学院,南京210093 [2]贵州科学院山地资源研究所,贵阳550001

出　　处：《测绘科学》2010年第4期87-88,27,共3页Science of Surveying and Mapping

基　　金：国家自然科学基金资助(40571024);国家"973"基础研究计划资助(2006CB403208)

摘　　要：本文以喀斯特后寨河流域为例,探讨了在Arcgis 9.0环境下从数字高程模型(DEM)中提取流域特征的详细过程,包括:DEM的生成和预处理、水流方向的确定、汇流累积量分析、河网的提取和子流域的划分以及落水洞的计算。经分析得到了研究区域河网特征以及研究区其他常用的流域特征信息,与实际河流水系特征基本吻合,从而证明该方法在分析流域的河网水系结构特征时具有一定的应用价值。In the case of Houzhai river basin, Puding County, GuiZhou, the author studied the detailed procedure of extracting basin features from DEM, including the building and pretreatment of DEM, definiting the flow direction, analyzing the flow accumulation, calculation of sinkhole, extracting of river network and division of sub-watershed. The author got the information of the features of the river network and other basin features after analysis, the result was similar to the actual features of the river network. This suggested that this way was valuable for extracting river network from DEM.

关 键 词：DEM 流域特征 普定后寨河 

分 类 号：P641[天文地球—地质矿产勘探] P208[天文地球—地质学]