安徽农业科学2017，Vol.45Issue(13)：214-217,4.
基于SRTM DEM的河棚河流域水系提取研究
Study on the Extraction of River Network in Hepeng River Basin Based on SRTM DEM
摘要
Abstract
Based on SRTM DEM data,taking Hepeng River basin as an example,river network was extracted by using hydrological analysis module in ArcGIS 10.0 version.The effects of different accumulated threshold value of confluence on drainage density,drainage area,river network classification and other watershed characteristics parameters were studied.The results showed that drainage density and river network length gradually decreased with the increase of confluence accumulated threshold value.There was a significant power function relationship between confluence accumulated threshold value and drainage density.Finally,the river network data was compared with the 1:250 thousand topographic map and it was found that river network extracted by using SRTM DEM was basically consistent with the actual water system,when the confluence accumulated threshold value was 200.关键词
SRTM DEM/水系提取/汇流累积阈值Key words
SRTM DEM/Extraction of river network/Confluence accumulated threshold value分类
天文与地球科学引用本文复制引用
姜卫祥,吕成文..基于SRTM DEM的河棚河流域水系提取研究[J].安徽农业科学,2017,45(13):214-217,4.
