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《Journal of Qinghai Normal University(Natural Science Edition)》 2016-03
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Eutrophication Evaluation of Keluke Lake Based on Grey Clustering Method

ZHOU Xiao-ping;YANG Xiao-li;Qinghai Environmental Science Research and Design Academy;  
Based on the on-site water quality data of Keluke lake during 2014-2015,TN,TP,NH3-N,SD,COD,Chla,and DO were selected for evaluating eutrophication of the lake by use of grey clustering method.The results showed that:(1)TN,NH3-N and COD were the most important factors of water quality of Keluke Lake.The average value of TN,COD and NH3-N in 2014 were 1.11mg/L,0.22mg/L,and 18.19mg/L,which attained the standards f or GradeⅥ,GradeⅡ,and GradeⅢof surface water quality,respectively.The average value of TN,COD and NH3-N in 2015 were 1.54mg/L,0.69mg/L,and 17.92mg/L,which attained the standards for Grade Ⅴ,Grade Ⅲ,and Grade Ⅲ of surface water quality,respectively.(2)The water quality of Keluke lake was upper-mesotrophic,and showed a trend that change to entrophic level.
【Fund】: 青海省自然科学基金青年项目(2014-ZJ-931Q)资助
【CateGory Index】: X824
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