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基于DEM的丹江口水库水源区水系分形特征研究

wf(2017)

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Abstract
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.
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Key words
catchment areas,drainage fractal dimension,fractal feature,sub-basin
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