Based on the digital elevation model and the spatial analysis techniques,in this paper,we studied the watershed landforms in the area of Chaiwen River in Yiyuan,Shandong Province,and di-vided the developing stages of the watershed landforms.Egou and Dazhangzhuang River are the head of Chaiwen River and Yihe River,respectively.Their water system fractal dimension,hypsometric index and geomorphic information entropy were calculated,and the geomorphologic development stages were divided.It is believed that the result of hypsometric index and geomorphic information entropy is more correct.The Egou River basin is now at the mature stage of geomorphologic development,and the Dazhangzhuang River basin is now at the old stage.River capture event enhanced the erosion ability of Egou and weakened the erosion ability of Dazhangzhuang River.
river capturewater fractal dimensionhypsometric indexgeomorphic information entro-pygeomorphological development stage
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