Analyze on the variation tendency of eutrophication in Western Chaohu Lake,China

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• 作者：Shang guangpingXu zhenyuZhang liangpuLiu li
• 会议时间：2009-11-01
• 关键词：Chaohu Lake ; Eutrophication ; (∑) TLI ; Spearman tendency test
• 作者单位：Shang guangping(Life Science College of Anhui University,Hefei,China,230061;Anhui Economic Research Institute,Hefei,P.R.China,230001)Xu zhenyu(Anhui Economic Research Institute,Hefei,P.R.China,230001)Zhang liangpu,Liu li(Hefei Environmental Monitoring Center,Hefei,China,230031)
• 母体文献：第十三届世界湖泊大会论文集
• 会议名称：第十三届世界湖泊大会
• 会议地点：武汉
• 主办单位：中国环境科学学会
• 语种：chi

摘要

In order to make clear the the spatial and temporal variation tendency,the data of 6 national routine monitoring sites in Western Chaohu Lake are collected and analyzed.The(∑) TLI are calculated and illustrated in diagrams for main eutrophication indices TP,TN,CODMn,Chl-a for 6 routine sampling sites and overall Western Chaohu Lake from 1983 to 2008.And the Spearman coefficient and tendency test are used to demonstrate the variation tendency of eutrophication in Western Chaohu Lake in the past 26 years.The findings indicated that the(∑) TLI for 6 sites are Entrance area of Nanfei River > Tangxi area > Entrance area of Shiwuli River > Entrance area of Paihe River > Entrance area of Xinhe River > Center area of western lake,and the eutrophication level of Entrance area of Shiwuli River,Entrance area of Xinhe River,Center area of western lake and the whole Western Chaohu Lake are significantly increased(P < 0.01)while Entrance area of Nanfei River,Tangxi area and Entrance area of Paihe River have no significant increase tendency.