基于SRTM3和SWBD的滇池流域特征信息提取

滇池是我国著名的高原淡水湖泊,属国家重点保护水域之一。滇池流域是云南省经济和社会发展水平最高的区域。以滇池流域为研究对象,选用SRTM3和SWDB数据,利用ArcGIS软件集成的Hydrology水文分析模块,对流域进行了特征信息提取工作。通过数据预处理、洼地填充、流向计算、汇流累积量计算、汇流点捕捉等步骤,有效的提取了滇池流域的边界和河流水系,成果具有一定的实际应用价值。

Extraction for the characters of Dianchi basin based on SRTMS and SWBD

Dianchi lake,one of the significant water protected area,is a famous plateau freshwater lake in China,and is also the area with highest level of economical and social development in Yunnan province.Taking the Dianchi Lake Basin as the case area,this study extracts the characters of Dianchi basin effectively using the SRTM、SWDB data and hydrographic analysis module which is integrated in ArcGIS.Specifically,this study gets the boundaries and river net of Dianchi Lake basin through the data preprocessing and calculation for fill,flow direction,flow accumulation,watershed and so on,The results are valuable for practical application.