The content and potential ecological risk assessment of heavy metals in coastal wetlands around the Bohai Sea

Yingchun Lv, Mengyi Wang, Wanxin Tian and Haibin Hui
Additional contact information
Yingchun Lv: School of Geography and Tourism, Qufu Normal University, Rizhao, P.R. China
Mengyi Wang: School of Geography and Tourism, Qufu Normal University, Rizhao, P.R. China
Wanxin Tian: School of Geography and Tourism, Qufu Normal University, Rizhao, P.R. China
Haibin Hui: Agrotechnical Service Center for Rizhao City, Rizhao, P.R. China

Plant, Soil and Environment, 2024, vol. 70, issue 6, 356-365

Abstract: Coastal wetlands play a vital role in the migration and transformation of heavy metal pollutants in watersheds. There were 30 surface sediment samples that were analysed to investigate the distribution and ecological risks of heavy metals in the coastal wetlands around the Bohai Sea. Our results showed that the average concentrations of Pb, Cr, Ni, Cu, Zn, and Cd in these wetlands were 17.92 ± 5.81, 50.29 ± 20.50, 31.53 ± 9.71, 25.37 ± 4.29, 80.13 ± 15.11, and 0.92 ± 0.54 mg/kg, respectively. Relative to other wetlands, Pb (25.43 ± 2.68 mg/kg) and Cd (1.67 ± 0.06 mg/kg) contents were higher in the Liaohe Delta wetland (LHDW). Cu (28.44 ± 3.71 mg/kg), Cr (83.11 ± 5.80 mg/kg), and Ni (45.91 ± 3.02 mg/kg) contents were higher in the Yellow River Delta wetland (YRDW). The Zn (120.86 ± 7.41 mg/kg) content was higher in the Qilihai wetland. Heavy metal concentrations in coastal wetland sediments are shown to be positively correlated with organic matter content. Our results showed that the concentration of heavy metals decreases with increasing sediment particle size. In this study, Cd showed the highest pollution index and, therefore, more attention should be paid to the potential ecological risks of Cd in coastal wetlands around the Bohai Sea, especially in the LHDW and YRDW.

Keywords: Bohai rim; Reed coastal wetland; toxic element; pollution assessment; source analysis (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://pse.agriculturejournals.cz/doi/10.17221/24/2024-PSE.html (text/html)
http://pse.agriculturejournals.cz/doi/10.17221/24/2024-PSE.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:70:y:2024:i:6:id:24-2024-pse

DOI: 10.17221/24/2024-PSE

Access Statistics for this article

Plant, Soil and Environment is currently edited by Kateřina Součková

More articles in Plant, Soil and Environment from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().