福建沿岸主要港湾水质的综合评价

Comprehensive assessment to seawater quality of harbors and bays in Fujian coast

本文应用灰色聚类和模糊聚类等方法对福建沿岸 9个港湾的海水水质进行了定量分类评价 其结果表明各港湾的海水水质在总体上均属于第Ⅰ类 ,但也受到不同程度的污染 ,其中厦门西港和厦门东侧水道海域铜、铅等重金属污染严重 ;沙埕港和闽江口普遍存在着DIP、DIN污染 ;湄洲湾、泉州湾、东山湾、兴化湾和三都澳也有个别污染物超标 .

By means of the methods of grey cluster and fuzzy cluster,this article makes up a quantitative classification and assessment to the seawater quality for 9 harbors and bays along Fujian coast.The results indicate that the seawater quality of all harbors and bays is in accordance with the level of the standard Ⅰ of GB 3097 1997 on the whole.But they are polluted in different degrees.Heavy metal(Cu,Pb) pollution is very serious in Western Xiamen Harbor and eastern sea area of Xiamen;Shacheng Harbor and Minjiang Estuary have widespread pollution of DIP,DIN;individual pollutants are above the standard Ⅱ in Meizhou Bay,Quanzhou Bay,Dongshan Bay,Xinghua Bay and Sandu Bay.