应用物种敏感性分布评估九龙江口水体重金属生态风险  

Assessing ecological risks of heavy metals to marine organisms in the Jiulongjiang Estuary by species sensitivity distribution

作　　者：赵佳懿[1] 杜建国[2] 陈彬[2] 刘正华[2] 林金兰[2,3] 俞炜炜[2] 马志远[2] 胡文佳[2] 

机构地区：[1]厦门大学海洋与海岸带发展研究院,福建厦门361102 [2]国家海洋局第三海洋研究所,福建厦门361005 [3]国家海洋环境监测中心-广西海洋环境监测中心站,广西北海536000

出　　处：《生态学杂志》2014年第2期400-407,共8页Chinese Journal of Ecology

基　　金：海洋公益性行业科研经费专项(201105015);国家海洋局青年海洋科学基金项目(2011143);国家自然科学基金项目(31101902);福建省自然科学基金项目(2012J05074);国家海洋局第三海洋研究所基本科研业务费专项(海三科2011006)资助

摘　　要：采用物种敏感性分布法（SSD）构建常见重金属元素对海洋生物的SSD曲线．结合九龙江口水体5、8、11月份21个站位重金属调查数据，计算了九龙江口7种重金属（As，Cd，Cr，Cu，Hg，Ph，Zn）不同暴露浓度对海洋生物的潜在影响比例（PAF），并分析了在相应站位重金属复合污染生态风险（msPAF）。结果表明，7种重金属中As的生态风险最大（即PAF值最高）；时间尺度上，5月份总的msPAF较其他月份稍高；空间尺度上，西溪至海门岛（1～7号站位）污染较严重．其中又以位于西溪和玉枕洲的2号和5号站位的msPAF为最。In the present work, a species sensitivity distribution （SSD） method was used to as- sess the ecological risk of common heavy metals to marine organisms. The ecological risk was characterized by potentially affected fraction （PAF） of species in relation to concentration of the toxic materials. According to the investigation data obtained at 21 stations in the Jiulongjiang Es- tuary in May, August and November, the PAFs of seven heavy metals （As, Cd, Cr, Cu, Hg, Pb, and Zn） to marine organisms were calculated. The results showed that As had the highest PAF among the seven heavy metals at each station of the Jiulongjiang Estuary. Spatially, the multi-substance PAF （msPAF） in May was higher than in other months. Temporally, the msPAF of the Stations 1-7 （from the Xixi Stream to the Haimen Isle of the Jiulongjiang Estuary） suffered from heavier pollution. In particular, the pollution status of the Station 2 and Station 5 was the most serious among all the investigated stations.

关 键 词：联合生态风险 潮汐 季节 动态变化 

分 类 号：X820.4[环境科学与工程—环境工程]