应用物种敏感性分布评估中国近海和福建主要海湾水体重金属生态风险

Abstract

利用物种敏感性分布(SPECIES SEnSITIVITy dISTrIbuTIOn,SSd)方法构建常见重金属元素对海洋生物的SSd曲线,在此基础上,结合实际调查数据,计算了中国近海7种重金属(AS、Cd、Cr、Cu、Hg、Pb、zn)和福建主要海湾6种重金属(AS、Cd、Cu、Hg、Pb、zn)对海洋生物的潜在影响比例(PAf),并分析了各种重金属在相应海区的联合生态风险(MSPAf)。结果表明,中国近海水体重金属对海洋生物的生态风险大小顺序为:渤海(20.67%)>黄海(18.39%)>东海(15.94%)>南海(11.26%)。福建主要海湾水体重金属对海洋生物的生态风险大小顺序为:泉州湾(47.44%)>厦门湾(47.16%)>罗源湾(43.03%)>沙埕港(34.65%)>深沪湾(30.34%)>三沙湾(28.64%)>闽江口(20.55%)>诏安湾(20.42%)>兴化湾(18.37%)>湄洲湾(17.24%)。

Species sensitivity distributions ( SSD ) method was used to assess the ecological risk of eight heavy metals ( As , Cd , Cr , Cu , Hg , Mn , Pb , Zn ) to marine organisms.According to the investigation data , the ecological risks of 7heavy metals ( As , Cd , Cr , Cu , Hg , Pb , Zn ) to marine organisms in Chi-nese offshore were assessed , and the ecological risks of 6heavy metals ( As , Cd , Cu , Hg , Pb , Zn ) to marine organisms in Fujian's main bays were also studied.The results showed that the ecological risks of 7 heavy metals in the Chinese offshore were in the order that Bohai Sea ( 20.67% ) >Yellow Sea ( 18.39% ) > East China Sea ( 15.94% ) >South China Sea ( 11.26% ), and the ecological risk of 6heavy metals in 13es- tuaries and bays in Fujian Province were in the order that Quanzhou Bay ( 47.44% ) >Xiamen Bay ( 47.16% ) > Luoyuan Bay ( 43.03% ) >Shacheng Port ( 34.65% ) >Shenhu Bay ( 30.34% ) >Sansha Bay ( 28.64% ) > Minjiang Es- tuary ( 20.55% ) >Zhaoan Bay ( 20.42% ) >Xinghua Bay ( 18.37% ) > Meizhou Bay ( 17.24% ) .