Surface water-groundwater interactions drive the spatial variability of dissolved heavy metals and interfacial fluxes in mangrove intertidal zones
Li, Zhenyang1,3; Xiao, Kai2,3; Li, Yasong4; Li, Hailong2; Pan, Feng5; Zheng, Yan2; Zheng, Chunmiao2; Liu, Yan2
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
2024-03-01
Volume632Pages:10
KeywordSpatial variability Groundwater Heavy metal fluxes Mangrove Intertidal zone
DOI10.1016/j.jhydrol.2024.130884
Corresponding AuthorXiao, Kai(Kxiao@yic.ac.cn) ; Liu, Yan(liuy8@sustech.edu.cn)
AbstractThe intertidal aquifer is a crucial area that significantly influences the transport of heavy metals and the health of coastal environment. In this study, we used a 3-dimensional sampling method to analyze the spatial variability of heavy metals in the groundwater of the mangrove intertidal zone in China. The pollution level of heavy metals and their release processes into coastal waters through groundwater discharge were also explored. Our findings revealed high spatial heterogeneity of heavy metals occurred along the cross-shore, parallel-shore, and depth directions. Specifically, heavy metals exhibited inconsistent variation trends between the seawater infiltrated zone and groundwater discharge zone along the cross-shore direction. Fe, Cr, Cu, Zn, and Pb exhibited a similar variation trend along the cross-shore direction, but were opposite to that of Hg and As. In addition, most heavy metals showed higher concentrations in mangrove groundwater compared to inland pond water and coastal seawater, indicating that mangrove intertidal zone played a crucial role in sequestering heavy metals. The spatial variability of heavy metals can be attributed to different exchange types and magnitudes between the surface water and groundwater, as well as the complex biogeochemical reactions. Our study also identified a slight pollution level of Zn and Hg, and high groundwater discharge-derived fluxes of Hg and As compared with other study sites in the world. In addition, this study highlights the importance of considering different groundwater end-member, especially for redox sensitive heavy metals, when determining groundwater discharge-derived fluxes into the surface water in mangrove intertidal zone.
Funding OrganizationNational Natural Science Founda- tion of China ; GuangDong Basic and Applied Basic Research Foundation ; Science, Technology and Innovation Commission of Shenzhen
Indexed BySCI
Language英语
WOS KeywordSUBTERRANEAN ESTUARY ; TOTAL MERCURY ; TRACE-METALS ; DISCHARGE ; IRON ; BIOGEOCHEMISTRY ; POREWATER ; GEOCHEMISTRY ; SEDIMENTS ; MANGANESE
WOS Research AreaEngineering ; Geology ; Water Resources
WOS IDWOS:001202347500001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/35314
Collection中国科学院海岸带环境过程与生态修复重点实验室
中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
Corresponding AuthorXiao, Kai; Liu, Yan
Affiliation1.Hebei Inst Water Sci, Shijiazhuang 050051, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Sch Environm Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
4.Fujian Prov Key Lab Water Cycling & Ecogeol Proc, Xiamen 361021, Peoples R China
5.Xiamen Univ, Coll Environm & Ecol, Fuiian Key Lab Coastal Pollut Prevent & Control, Xiamen 361102, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhenyang,Xiao, Kai,Li, Yasong,et al. Surface water-groundwater interactions drive the spatial variability of dissolved heavy metals and interfacial fluxes in mangrove intertidal zones[J]. JOURNAL OF HYDROLOGY,2024,632:10.
APA Li, Zhenyang.,Xiao, Kai.,Li, Yasong.,Li, Hailong.,Pan, Feng.,...&Liu, Yan.(2024).Surface water-groundwater interactions drive the spatial variability of dissolved heavy metals and interfacial fluxes in mangrove intertidal zones.JOURNAL OF HYDROLOGY,632,10.
MLA Li, Zhenyang,et al."Surface water-groundwater interactions drive the spatial variability of dissolved heavy metals and interfacial fluxes in mangrove intertidal zones".JOURNAL OF HYDROLOGY 632(2024):10.
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