基于模糊数学的西溪湿地水质评价

Evaluation of water quality of Xixi wetland based on fuzzy mathematics

将模糊数学原理引入到湿地水质评价中,建立适合西溪湿地的评价体系。利用模糊综合评判方法,对2009-2011年西溪湿地水质监测数据进行综合评价。评价结果表明:西溪湿地水质状况2009年略好,除沿山河、蒋村港属于V类水质外,深潭口、秋雪庵、百家楼、水贸市场属于III类或IV类水质。而2010-2011年,所有研究的断面基本都处于V类水质,污染仍然十分严重,主要超标因子为总氮、总磷及溶解氧。

Through the introduction of fuzzy mathematics theory into water quality evaluation of wetland , the paper set up a evaluation system suitable for Xixi wetland. Making use of fuzzy comprehensive evalua- tion method , it comprehensively evaluated the monitoring results of water quality in Xixi wetland from 2009 to 2011. The results indicated that the water quality of Xixi wetland in 2009 was slightly better than that of other two years, that of Shentankou, Qiuxuehn, Baijialou and Shuimaoshichang belonged to level III or IV but that of Yanshanhe and Jiangcungang to level V. The water quality of all the researched points was level V from 2010 to 2011, which indicated that the water pollution of Xixi Wetland was serious and the main exceeding factors were TN, TP and dissolved oxygen.