莆田市平海湾海水养殖区表层沉积物重金属生态危害程度和水环境问题分析

Ecological harmfulness of heavy metals in surface sediments and water environment problems in aquaculture area of Pinghai Bay,Putian City

为了研究莆田市平海湾海水养殖区表层沉积物重金属污染和海水有机物污染情况,分析重金属生态危害程度和有机污染程度,本研究小组在研究区采集了具有代表性、典型性的表层沉积物和海水样品,通过采用瑞典科学家Hakanson提出的生态危害指数法及海水有机污染指数法等方法,研究确定研究区内表层沉积物中Cd,Hg两种元素生态危害程度达到中等,海水有机污染程度等级为2级,处于开始受到污染状态。进一步分析了研究区海水综合水质及富营养化等生态环境问题,以期对加强海水养殖生态环境监管、推动海洋生态问题研究以及推进海水养殖业绿色发展等方面提供参考。

In order to study the heavy metal pollution in the surface sediment and organic pollutants of seawater of the Pinghai Bay aquaculture area in Putian City,and to analyze the ecological hazards and organic pollution levels of heavy metals,this study collected representative and typical surface sediment and seawater samples in the research area.By using methods such as the ecological hazard index method and seawater organic pollution index method proposed by Swedish scientist Hakanson,the ecological harm level of Cd and Hg elements in the surface sediment of the study area is identified as moderate,and the level of organic pollution in seawater is as level 2,which is in a state of initial contamination.Further analysis was conducted on the comprehensive water quality and eutrophication of the seawater in the study area,in order to provide reference for strengthening the supervision of the marine aquaculture ecological environment,promoting research on marine ecological issues,and promoting the green development of the marine aquaculture industry.