天津汉沽贝类增养殖区环境质量综合评价

Comprehensive Assessment of Environment Quality in Shellfish Culture Areas at Hangu District,Tianjin City

根据2012年对天津汉沽贝类增养殖区环境的监测评价,分析了2012年汉沽增养殖区水质及沉积物环境的质量状况,并运用单因子污染指数法、营养指数法和有机污染评价指数法以及环境质量综合指数和环境综合风险指数对该海域环境环境质量进行评价。评价结果表明,天津汉沽海水增养殖区海区有机污染程度较高;营养盐超标严重,导致增养殖区严重富营养化,使得发生赤潮或病害风险较高,影响该海区主导功能的发挥。

According to the environmental monitoring and evaluation of the shellfish culture at Hangu district of Tianjin in 2012, the environment conditions of the water quality and sediment quality were analyzed. The index of single factor pollution,index of trophication（E）, index of organic pollution （A） as well as environmental quality index （IEQ） and integrated environmental risk index （IER） were utilized to evaluate the environmental quality in Hangu District. The results showed that organic pollution was in a serious level; the nutrient concentrations were much higher than the standards, which led to severe eutrophication as well as relatively high frequency of red tide or risk of disease and affected the major function of shellfish culture area.