Impact of water diversion on the hydrogeochemical characterization of surface water and groundwater in the Yellow River Delta
Liu, Q; Li, FD; Zhang, QY; Li, J; Zhang, Y; Tu, C; Ouyang, Z
2014
Source PublicationAPPLIED GEOCHEMISTRY
ISSN0883-2927
Volume48Pages:83-92
AbstractThe Yellow River Delta is undergoing severe ecosystem degradation through salinization caused mainly by seawater intrusion. The Yellow River diversion project, in operation since 2008, aims to mitigate a projected ecosystem disaster. We conducted field investigations across three ecosystems (Farmland, Wetland and Coast) in the delta to assess the effectiveness of the annual water pulse and determine the relationships between surface water and groundwater. The chemical characteristics of the groundwater in Farmland exclude the possibility of seawater intrusion. The Wetland is vulnerable to pollution by groundwater discharge from Farmland and to secondary salinization caused by rising water tables. The salinity values of groundwater at Coast sites likely reflect the presence of seawater trapped in the clay sediments, a premise corroborated through measurements of groundwater levels, stable isotopes and major ion signatures. Our delta D-delta O-18 two-dimensional graphic plot demonstrated that groundwaters of Farmland and Wetland changed toward more depleted isotopic compositions following water diversion, but this was not the case in the Coast sites, where the water table varied little year-round. A hydrochemical facies evolution diagram (HFE-D) demonstrated that freshening is taking place in the largest portions of the aquifers and that, without sustained water diversion recharge, these underground water bodies may switch from freshening to salinization on a seasonal time scale. Thus, the qualities of waters in coastal aquifers in the Yellow River Delta are substantially influenced by the process of ecological water diversion, and also by land use practices and by the lithological properties of the drainage landscape. (C) 2014 Elsevier Ltd. All rights reserved.
SubtypeJournal
Subject AreaGeochemistry & Geophysics
WOS Subject ExtendedGeochemistry & Geophysics
WOS KeywordNORTH CHINA PLAIN ; WETLAND CONSERVATION ; SEAWATER INTRUSION ; NITRATE POLLUTION ; EVOLUTION ; AQUIFER ; MANAGEMENT ; INTERFACE ; TRANSPORT ; SCIENCE
Indexed BySCI
Language英语
WOS IDWOS:000341358800008
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44512
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Liu, Q,Li, FD,Zhang, QY,et al. Impact of water diversion on the hydrogeochemical characterization of surface water and groundwater in the Yellow River Delta[J]. APPLIED GEOCHEMISTRY,2014,48:83-92.
APA Liu, Q.,Li, FD.,Zhang, QY.,Li, J.,Zhang, Y.,...&Ouyang, Z.(2014).Impact of water diversion on the hydrogeochemical characterization of surface water and groundwater in the Yellow River Delta.APPLIED GEOCHEMISTRY,48,83-92.
MLA Liu, Q,et al."Impact of water diversion on the hydrogeochemical characterization of surface water and groundwater in the Yellow River Delta".APPLIED GEOCHEMISTRY 48(2014):83-92.
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