珠海外伶仃岛拟建海洋牧场海域重金属分布与评价
Distribution and assessment of heavy metals in the sea area of the proposed marineranching in Wailingding island in Zhuhai
谢笑艳 1陈丕茂 2佟飞 2袁华荣 2冯雪 1余景 2舒黎明 2刘雁1
作者信息
- 1. 上海海洋大学海洋科学学院,上海 201306;中国水产科学研究院南海水产研究所,农业农村部南海渔业资源环境科学观测实验站,中国水产科学研究院海洋牧场技术重点实验室,广东省渔业生态环境重点实验室,广东省海洋休闲渔业工程技术研究中心,广东 广州 510300
- 2. 中国水产科学研究院南海水产研究所,农业农村部南海渔业资源环境科学观测实验站,中国水产科学研究院海洋牧场技术重点实验室,广东省渔业生态环境重点实验室,广东省海洋休闲渔业工程技术研究中心,广东 广州 510300
- 折叠
摘要
根据2020年春季和秋季对珠海外伶仃岛拟建海洋牧场海域海水和表层沉积物重金属调查资料,使用单因子评价法、综合污染指数法和潜在生态风险指数法对其重金属质量水平进行评价.结果表明:极少数站位Cu元素含量超二类海水水质标准,各站位表层海水重金属综合评价指数均小于1,S16站位海水重金属综合评价程度属于轻微污染,其余各站位均属于清洁状态,表层海水中Hg和As存在明显同源性,Pb、Hg和As之间存在明显异源性.表层沉积物重金属含量均符合一类海洋沉积物质量标准,沉积物重金属对海洋生态系统仅存在轻微潜在生态风险.表层沉积物重金属元素存在轻微潜在生态风险,而建设人工鱼礁,可形成上升流的增殖人工鱼礁系统,有利于消除表层沉积物重金属带来的潜在生态影响.
Abstract
According to the investigation data of heavy metals in seawater and surface sediments of the proposed marine ranching of Wailingding island,Zhuhai in spring and autumn of 2020,single-factor e-valuation method,comprehensive pollution index method and potential ecological risk index method were used to evaluate the quality level of heavy metals.The results showed that the Cu content of very few stations exceeded the class Ⅱ seawater quality standard,the comprehensive evaluation index of heavy metals in surface seawater of each station was less than 1,the comprehensive evaluation degree of heavy metals in seawater at S16 station was slightly polluted,and the rest stations were clean.There was obvious homology between Hg and As in surface seawater,and obvious heterogeneity among Pb,Hg and As.The content of heavy metals in surface sediments all met the quality standards of class I marine sediments,and heavy metals in sediments had only slight potential ecological risks to marine e-cosystems.There were slight potential ecological risks of heavy metals in surface sediments,and the construction of artificial reefs could form an upwelling and proliferating artificial reef system,which was conducive to eliminating the potential ecological impacts brought by heavy metals in surface sedi-ments.
关键词
外伶仃/重金属/潜在生态风险/海洋牧场/海水/沉积物Key words
Wailingding island/heavy metals/potential ecological risk/marine ranching/seawater/sediment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据