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Lake Wuliangsuhai is typical shallow weedy lake in arid area in north of China. In this paper, Lake Wuliangsuhai is recognized as study area. The data of water quality from June to October in 2005 are analyzed using principal components analysis. The parameters about water quality of Lake Wuliangsuhai are generalized into sever principal components. They are index about characters of eutrophication,...
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