黄河上游流域边界图

黄河是我国第二长河，黄河泥沙问题引起全世界人民的关注。流域是重要的自然单元，以SRTM-DEM与ASTER-GEDEM数据集为数据源，在ArcGIS软件平台下，利用河道烧录法与河道标量法相结合的方法，对黄河上游流域边界进行了提取，获得自黄河源区至河口镇整个黄河上游的流域边界。 该图以ArcG...

The Yellow River is the second-longest river in China, and its sediment-related issues have attracted widespread global attention. As an important natural geographic unit, the watershed boundary of the upper Yellow River was extracted using a combined approach of the river burning method and the channel scalar method on the ArcGIS software platform, with SRTM-DEM and ASTER-GEDEM datasets as the data sources. The obtained result is the complete watershed boundary of the entire upper Yellow River from its source region to Hekou Town. This map is based on ArcG...

搜集汇总

背景与挑战

背景概述

该数据集是黄河上游流域的边界矢量图，覆盖青海、四川、甘肃、宁夏、内蒙古五个省（自治区），总面积55.06×10⁴ km²。数据基于SRTM-DEM与ASTER-GDEM数据源，在ArcGIS平台使用河道烧录法与河道标量法提取，以.shp格式存储，采用WGS84坐标系。该数据是水文、土壤侵蚀及非点源污染研究的重要基础，但三湖河口至河口镇段因河流比降小存在一定误差，属于“国家重点基础研究发展规划(973计划)”项目成果。