摘要
红树林湿地不仅是海陆交汇区内一个特殊的生态系统,也是重金属等污染物质的汇聚地。本文通过对海南东寨港红树林湿地根系土的系统采集和分析,研究了根系土中重金属的分布和生态风险。本研究分别采用了相关分析、聚类分析和潜在生态风险指数(RI)、内梅罗指数(PN)的分析方法对湿地根系土中重金属的污染源和生态风险进行了分析。结果显示,As、Ba、Pb、Sr主要是生物作用以及火山地质条件等自然源的贡献;而Cd、Co、Cr、Cu、Hg、Ni、Ti、Zn以工业、农业复合源的贡献为主,特别是水产养殖业。生态风险分析表明,湿地生态风险元素主要为Cd、Hg和Ni,在湿地西部及东南区域存在明显的重金属生态风险,需进一步加强环境保护工作。
Mangrove forests,as special vegetation types on the coast,are sources and pools of heavy metal pollutants.In this paper,through the systematic collection and analysis of mangrove wetland root soils in Dongzhai Harbor,Hainan,the distribution and ecological risk of heavy metals in root soils were studied.Correlation analysis,cluster analysis and potential ecological risk index(RI)Nemerow pollution index(PN)analysis methods were used to explore the pollution sources and ecological risks of heavy metals in wetland root soils,respectively.The results show that As,Ba,Pb and Sr are mainly of natural origin,Cd,Co,Cr,Cu,Hg,Ni,Ti and Zn are mainly of industrial and agricultural origin,especially aquaculture.Ecological risk analyses indicate that Cd,Hg and Ni were the main pollutant elements and there is a significant ecological risk of heavy metals in the western and southeastern corners of the wetland.
作者
茅昌平
王嘉明
张固成
杜苏明
常宇
饶文波
MAO Changping;WANG Jiaming;ZHANG Gucheng;DU Suming;CHANG Yu;RAO Wenbo(School of Earth Sciences and Engineering,Hohai University,Nanjing 211100,China;Hainan Key Laboratory of Marine Geological Resources and Environment,Haikou 570206,China;Hainan Geological Survey Institute,Haikou 570206,China)
出处
《海洋环境科学》
北大核心
2025年第4期543-554,共12页
Marine Environmental Science
基金
海南省海洋地质资源与环境重点实验室开发基金(24-HNHYDZZYHJKF055)
江苏省自然科学基金项目(BK20231467)。
关键词
红树林
重金属
根系土
沉积物
东寨港
mangrove
heavy metals
root soil
sediment
Dongzhai Harbour
作者简介
茅昌平(1981−),男,河北张家口人,研究员,博士,主要从事地质环境及水文地球化学研究,E-mail:maochangping@hhu.edu.cn;通信作者:茅昌平,E-mail:maochangping@hhu.edu.cn。
