秦皇岛近岸海域水质状况调查与评价

Current condition and assessment of inshore water quality in Qinhuangdao

根据2011年对秦皇岛近岸海域水质调查结果,应用单因子法、有机污染指数法和富营养化指数法对该海域海水的质量状况进行了评价与分析。结果表明,pH、DO、COD、PO43--P和DIN均存在不同程度的超标,其中pH、COD和PO43--P超标严重;调查海域春季海水状况好于夏季和秋季,由春季到秋季,调查海域受到有机污染的范围逐渐扩大,贫营养水平海水范围逐渐缩小,中营养和高营养水平海水范围逐渐扩大。

Based on the monitoring results of water quality in Qinhuangdao Inshore in 2011, single factor method, index of organic pollution method and eutrophication level method were used to analyze and evaluate the water quality of coastal water. The results show that： the concentrations of pH,DO, COD,PO4 --P and DIN exceed the standard to varying degrees, the degrees of pollution of pH,CODand PO43- --P were aggravated; the water quality in spring is better than that in summer and autumn, from summer to autumn, the scope of the organic pollution is gradually expanding, the scope of oligotrophic water is gradually narrowing, the scope of middle eutrophication and high eutrophication are gradually expanding.