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

doi:10.1016/j.jhydrol.2024.130884

	Surface water-groundwater interactions drive the spatial variability of dissolved heavy metals and interfacial fluxes in mangrove intertidal zones
	Li, Zhenyang 1,3; Xiao, Kai2,3 ; Li, Yasong 4; Li, Hailong 2; Pan, Feng 5; Zheng, Yan 2; Zheng, Chunmiao 2; Liu, Yan 2
发表期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
	2024-03-01
卷号	632 页码:10
关键词	Spatial variability Groundwater Heavy metal fluxes Mangrove Intertidal zone
DOI	10.1016/j.jhydrol.2024.130884
通讯作者	Xiao, Kai([email protected]) ; Liu, Yan([email protected])
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.
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
收录类别	SCI
语种	英语
关键词[WOS]	SUBTERRANEAN ESTUARY ; TOTAL MERCURY ; TRACE-METALS ; DISCHARGE ; IRON ; BIOGEOCHEMISTRY ; POREWATER ; GEOCHEMISTRY ; SEDIMENTS ; MANGANESE
研究领域[WOS]	Engineering ; Geology ; Water Resources
WOS记录号	WOS:001202347500001
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/35314
专题	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
通讯作者	Xiao, Kai; Liu, Yan
作者单位	1.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
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.