摘要
为评估海南岛近岸海域海菖蒲海草床环境质量状况,基于2022年秋季在菖蒲海草床典型分布区域的调查结果,分析了海水、沉积物、海菖蒲体内的重金属(Pb、Cr、As、Zn和Cu)含量和海菖蒲生长特征,并评估了潜在生态风险。结果表明,海水和沉积物的单项重金属Eri·均<40,表明均属于低风险水平。海草床不同海域海水和沉积物重金属的综合RI排序分别为文昌高隆湾>陵水黎安港>琼海龙湾>文昌长圮港>陵水新村港和文昌长圮港>文昌高隆湾>琼海龙湾>陵水黎安港>陵水新村港,且均<150,表明属低风险水平,其中,海水Pb和沉积物As分别占综合RI的比例为49.3%和45.3%。海菖蒲对重金属的富集因重金属种类和海草不同组织部位而异,其地上组织对重金属(Pb、Cr和Cu)富集能力高于地下组织。
To evaluate the environmental quality of Enhalus acoroides seagrass beds in the coastal waters of Hainan Island,based on the survey results of typical distribution areas of E.acoroides seagrass beds in autumn 2022,the contents of heavy metals(Pb,Cr,As,Zn,and Cu)in seawater,sediments,and E.acoroides,as well as the growth characteristics of E.acoroides,were analyzed,and the potential ecological risk index method was used for evaluation.The results showed that the single heavy metal values of seawater and sediments were all<40,indicating a low-risk level.The comprehensive RI rankings of heavy metals in seawater and sediments in different sea areas of seagrass beds were Gaolong Bay>Lian harbor>Longwan bay>Changpi harbor>Xincun harbor;sediment—Changpi harbor>Gaolong bay>Longwan bay>Lian harbor>Xincun harbor,respectively,and both were<150,indicating that RI belonged to the low-risk level.Among them,seawater Pb and sediment as accounted for 49.3%and 45.3%of the comprehensive RI,respectively.The enrichment of heavy metals by E.acoroides varied with the types of heavy metals and different tissue parts of seagrass,and the enrichment capacity of aboveground tissues for heavy metals(Pb,Cr,and Cu)was higher than that of belowground tissues.
作者
刘贤
黄端杰
刘顿
王先明
赵俊福
吴小龙
熊曾恒
林积泉
覃乐政
Liu Xian;Huang Duanjie;Liu Dun;Wang Xianming;Zhao Junfu;Wu Xiaolong;Xiong Zengheng;Lin Jiquan;Qin Lezheng(Hainan Provicial Ecological Environment Montitoring Center,Haikou 571126,China;School of Marine Biology and Fidheries,Hainan University,Haikou 570228,China)
出处
《海洋环境科学》
北大核心
2026年第1期95-105,共11页
Marine Environmental Science
基金
海南省自然科学基金青年基金项目(424QN361)。
关键词
海菖蒲
海草床
重金属
生态风险评估
相关性
Enhalus acoroides
seagrass meadow
heavy metal
ecological risk assessment
correlation
