海洋地质前沿2025，Vol.41Issue(6)：93-102,10.DOI:10.16028/j.1009-2722.2024.071
万宁潟湖红树林区域海水重金属污染状况评估
Assessment on heavy metal pollution in mangrove seawater of Wanning Lagoon
摘要
Abstract
Heavy metal pollution is a major issue of marine environmental assessment.To clarify the distribution and concentration of heavy metals(Hg,Cr,Cu,Zn,Pb,Cd and As)in seawater of mangrove areas in Wanning La-goon,Hainan South China,20 surface seawater samples were collected in mid-October 2022 for analysis.Com-prehensive pollution evaluation method,Hakanson index,and risk quotient were used.The originations of heavy metals were traced based on correlation analysis and bidirectional stratified cluster analysis.Results show that the average contents of Hg,Cu,Pb,and Cd were 0.044,14.975,0.695,and 0.628 μg/L,respectively,and Cr,Zn and As were below the detection limits in all stations.In terms of heavy metal pollution status,the Laoyehai area was better than the Xiaohai area,the natural mangrove forest area was better than other areas,and the estuary area was worse than other areas.The content of Cu exceeded the benchmark and so the degree of biological risk was relat-ively high among all heavy metals.Heavy metals mainly come from land-based anthropogenic activities such as fishery breeding and agricultural production,as well as atmospheric subsidence of port transportation and ship emission,and some areas were affected by point-source anthropogenic activities.This study provided a reference for the protection of mangrove ecosystem around Wanning Lagoon.关键词
万宁潟湖/红树林/表层海水/重金属/风险评价Key words
Wanning Lagoon/mangroves/surface seawater/heavy metals/risk assessment分类
海洋学引用本文复制引用
陈靓,黄赞慧,王照翻,邢子浩,李平汝,符钉辉,韦秀..万宁潟湖红树林区域海水重金属污染状况评估[J].海洋地质前沿,2025,41(6):93-102,10.基金项目
中国地质调查局项目"海南岛东南海域自然资源调查试点"(DD20220993),"福建兴化湾-鉴江湾海岛(礁)综合地质调查评价"(DD20251040) （DD20220993）
海南省科技专项资助(ZDYF2023GXJS011) （ZDYF2023GXJS011）
