综合水质标识指数法在公园湖泊水质评价中的应用

2011年8月对上海市12个公园中的13个湖泊水体进行了调查。对综合水质指数中各单因子水质标识指数的权重进行了改进与选择,根据调查资料,采用综合水质标识指数法对被调查水体的水质状况及营养状态进行了评价,用评分法和综合营养状态指数法验证了综合水质标识指数法应用于湖泊富营养化评价中的合理性。结果表明:所调查的湖泊中,仅有15.4%的公园湖泊综合水质达到水环境功能区要求,处于富营养化状态的公园湖泊占53.8%,湖泊中TN和CODCr污染最严重,综合水质标识指数法简便易用,能全面反映水质状况,评价结果科学合理,适合在公园湖泊富营养化评价中推广使用。

Application of comprehensive water quality identification index method to water quality assessment of park lakes

The thirteen lake water bodies in twelve parks in Shanghai were investigated in Aug.2011.The weights of the single water quality factor in the comprehensive water quality index have been improved and selected.The comprehensive water quality identification index method was used to evaluate the water quality nutrition status of the investigated water-bodies.The rationality of the comprehensive water quality identification index method applied to the lake eutrophication assessment was verified by scoring method and comprehensive nutrition state index method.The conclusion showed that only 15.4 % of the comprehensive water quality of the park lakes met the requirements of water environment function,the lakes bing in eutrophication status accounted for 53.8%.The most serious pollutants were total nitrogen and chemical oxygen demand.The comprehensive water quality identification index method was simply used and can fully reflected the status of the water quality,the evaluation results were scientific and reasonable,it is appropriate for application to the eutrophication evaluation in park lakes.