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Surface water-groundwater interactions drive the spatial variability of dissolved heavy metals and interfacial fluxes in mangrove intertidal zones

文献类型：期刊论文

作者Li, Zhenyang2,4; Xiao, Kai2,5; Li, Yasong3; Li, Hailong5; Pan, Feng1; Zheng, Yan5; Zheng, Chunmiao5; Liu, Yan5
刊名JOURNAL OF HYDROLOGY
出版日期2024-03-01
卷号632页码:10
关键词Spatial variability Groundwater Heavy metal fluxes Mangrove Intertidal zone
ISSN号0022-1694
DOI10.1016/j.jhydrol.2024.130884
通讯作者Xiao, Kai(Kxiao@yic.ac.cn) ; Liu, Yan(liuy8@sustech.edu.cn)
英文摘要The 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.
WOS关键词SUBTERRANEAN ESTUARY ; TOTAL MERCURY ; TRACE-METALS ; DISCHARGE ; IRON ; BIOGEOCHEMISTRY ; POREWATER ; GEOCHEMISTRY ; SEDIMENTS ; MANGANESE
WOS研究方向Engineering ; Geology ; Water Resources
语种英语
WOS记录号WOS:001202347500001
资助机构National Natural Science Founda- tion of China ; GuangDong Basic and Applied Basic Research Foundation ; Science, Technology and Innovation Commission of Shenzhen
源URL[http://ir.yic.ac.cn/handle/133337/36112]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
烟台海岸带研究所_近岸生态与环境实验室
通讯作者Xiao, Kai; Liu, Yan
作者单位1.Xiamen Univ, Coll Environm & Ecol, Fuiian Key Lab Coastal Pollut Prevent & Control, Xiamen 361102, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.Fujian Prov Key Lab Water Cycling & Ecogeol Proc, Xiamen 361021, Peoples R China
4.Hebei Inst Water Sci, Shijiazhuang 050051, Peoples R China
5.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
推荐引用方式
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.

入库方式： OAI收割

来源：烟台海岸带研究所

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