用灰色聚类法对某一水体富营养化程度的评价

通过对重庆大学虎溪校区人工湖2006年全年的水质检测分析,选用叶绿素a(Chla)、总磷(TP)、总氮(TN)、透明度(SD)为聚类指标,采用灰色聚类法对人工湖春、夏、秋、冬四季的水体进行富营养化评价。结果表明:人工湖成湖一年内,湖水年平均水平处于中营养级状态,其中,春、秋、冬3个季节湖水处于中营养级状态,且水质已与富营养化水质接近,而夏季湖水已经达到了富营养化水平。通过对评价结果进行分析探讨,揭示了其富营养化发展的趋势,为人工湖以后的水质保持及富营养化防治提供科学依据。

Eutrophication Assessment by Use of Grey Clustering Method for a Waters

Based on the water quality analysis for artificial lake in Chongqing University in the whole 2006,Chloro-phyll a(Chla),Total Phosphorous(TP),Total Nitrogen(TN) and transparency(SD) were selected for evaluating eutrophication of the artificial lake in four seasons by use of grey clustering method.The results was shown,that trophic level of annual mean of the lake is at middle condition after a year the lake was built.The waters is in mid-dle trophic condition at spring,autumn and winter,and the water quality is close to the eutrophic water quality,while the lake is at trophic status in summer.By analyzing and studying the results,the development trend of its eutrophication is revealed,and thus providing the scientific basis for the improvement and the maintenance of water environment.