Impact of human activities on coastal groundwater pollution in the Yang-Dai River plain, northern China

doi:10.1007/s11356-020-09760-7

	Impact of human activities on coastal groundwater pollution in the Yang-Dai River plain, northern China
	He, Zekang 2,3; Han, Dongmei 2,3; Song, Xianfang 2,3; Yang, Shengtian 1
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2020-06-30
页码	22
关键词	Agricultural activities Coastal aquifer Freshening process Groundwater hydrochemistry Salinization
ISSN号	0944-1344
DOI	10.1007/s11356-020-09760-7
通讯作者	Han, Dongmei(handm@igsnrr.ac.cn)
英文摘要	Overexploitation of groundwater has resulted in seawater intrusion in many semiarid and arid coastal areas. This study illustrates the origin of groundwater salinity and assesses seawater intrusion/extrusion process in the Yang-Dai River plain aquifer, by analyzing hydrochemical and stable isotopic compositions of surface water, groundwater, geothermal water, and seawater. A cone of depression in groundwater is caused by intensive groundwater pumping formed in the late 1980s in the alluvial Yang-Dai River plain. In the northern part, groundwater exploitation has caused seawater intrusion identified by Ca-Cl type water. However, the widely distributed silty clay prevented the seawater intrusion in the southern part, evidenced by Ca-HCO(3)type water with depleted delta H-2 (-60 to -46 parts per thousand) and delta O-18 (-8.9 to -4.7 parts per thousand). Anthropogenic pollution also plays a significant role in groundwater salinization. The positive correlation between Cl and NO(3)(-)for most groundwater and the extremely high nitrate concentrations (up to 652.7 mg/L) indicate that fertilizer from agricultural activities has greatly influenced groundwater quality. Irrigation return flow evaporation during agricultural activities also accounts for groundwater salinity. Besides the intensive fertilizer usage, seawater intrusion and the established anti-tide dams reduced the surface water and groundwater discharge to the sea and then resulted in the extremely high nitrate concentration. This study may improve the understanding of the groundwater salinization processes in a complex coastal aquifer, which is greatly influenced by anthropogenic activities.
资助项目	Outstanding Member Program of the Youth Innovation Promotion Association, CAS[2012040]
WOS关键词	SEAWATER INTRUSION ; SALINIZATION PROCESSES ; FRESHENING EVENTS ; DELTA AQUIFER ; WATER ; QUALITY ; NITROGEN ; DEUTERIUM ; ISOTOPES ; ELEMENTS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000544556300016
资助机构	Outstanding Member Program of the Youth Innovation Promotion Association, CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162364]
专题	中国科学院地理科学与资源研究所
通讯作者	Han, Dongmei
作者单位	1.Beijing Normal Univ, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	He, Zekang,Han, Dongmei,Song, Xianfang,et al. Impact of human activities on coastal groundwater pollution in the Yang-Dai River plain, northern China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2020:22.
APA	He, Zekang,Han, Dongmei,Song, Xianfang,&Yang, Shengtian.(2020).Impact of human activities on coastal groundwater pollution in the Yang-Dai River plain, northern China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,22.
MLA	He, Zekang,et al."Impact of human activities on coastal groundwater pollution in the Yang-Dai River plain, northern China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2020):22.