摘要
为了分析河南省境内丹江口水库水源区的地形地貌特征,运用ARCGIS10.0软件和分形理论对该区域的ASTER GDEM数据进行提取,并将水系划分成11个子流域,应用网格法和河长比分叉比法分别计算了子流域和总水系的分维数,结果为:研究区各子流域的分维值相差不大,在0.998 6~1.057 6之间,总水系分维值为1.401 1,表明该水系在发育过程中存在着分形,流域地貌处于侵蚀发育的幼年期。
The ASTER GDEM data is extracted in Danjiangkou Reservoir catchment areas of Henan Province applying aregis10.0 software and fractal theory to analyze the landscape characteristics of the region, and the water system is divided into eleven sub-basins, the son and the total drainage of fractal dimension are respectively calculated by the method of lattice, the length and bifurcate ratio of the river system. The results show that the difference of fraetal dimension values in each sub-basin differ in the region wasn＇t large, between 0.9986 - 1.0576, the fraetal dimension value of total river system was 1.4011,which indicated there were fractal in the water system during the process of devel- opment and the watershed geomorphology was in juvenile stage of erosion.
出处
《中国农村水利水电》
北大核心
2017年第4期121-124,共4页
China Rural Water and Hydropower
基金
河南省科技攻关计划(GG201412)
关键词
水源区
水系分维
分形特征
子流域
catchment areas
drainage fractal dimension
fractal feature
sub-basin
