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Saltwater intrusion into groundwater systems in the Mekong Delta and links to global change

文献类型：期刊论文

作者Xiao Han1; Tang Yin2; Li Haiming1; Zhang Lu3; NGO-DUC Thanh4; Chen, Deliang5; Tang Qiuhong2,6
刊名ADVANCES IN CLIMATE CHANGE RESEARCH
出版日期2021-06-01
卷号12期号:3页码:342-352
关键词Human activity Climate change Saltwater intrusion Groundwater system Mekong delta (southern Vietnam)
ISSN号1674-9278
DOI10.1016/j.accre.2021.04.005
通讯作者Tang Qiuhong(tangqh@igsnrr.ac.cn)
英文摘要In recent decades, changes in temperature, wind, and rainfall patterns of Southeast Asia induced by climate warming in the Tibetan Plateau result in many environmental changes that have serious impacts on the lower reach of the Mekong River basin, a region already battling severe water-related environmental problems such as pollution, saltwater intrusion, and intensified flooding. In the densely populated Mekong Delta located at the mouth of the Mekong River basin in southern Vietnam, the hydrogeological systems have been transformed from an almost undisturbed to a human-impacted state and saltwater intrusion into surface water and groundwater systems has grown to be a detrimental issue recently, seriously threatening freshwater supply and degrading the eco-environment. In this article, the impacts of human activities and climate change (e.g., groundwater over-exploitation, relative sea-level rise, storm surge, changing precipitation and temperature regimes, uncontrolled drainage canals, operation of hydropower dams, and rapid development of aquaculture) on saltwater intrusion into groundwater systems in the Mekong Delta are briefly reviewed. Based on current status of research findings regarding saltwater intrusion and the subsequent groundwater quality degradation under the impacts of human activities and climate change, major knowledge gaps and challenges are identified and discussed, including thickness and permeability of the silt and clay aquitard, present-day highly heterogeneous 3D distribution of saline groundwater zones, dynamic variation of saltwater/freshwater transition zone, and the most effective and economical control measure. To bridge these gaps, future work should: 1) apply environmental isotope techniques in combination with borehole tests to gain detailed hydrogeological information regarding spatial variation of permeability and thickness of the silt and clay aquitard; 2) intensify regular groundwater monitoring and collect as much groundwater samples from multiple hydro-stratigraphic units at different depths as possible to visualize the present-day highly heterogeneous 3D distribution of saline groundwater; 3) develop a series of variable-density coupled groundwater flow and salt transport models representing various scenarios of human activities and climate change for predicting future extent of saltwater intrusion; and 4) identify the dominant factor causing saltwater intrusion and determine the most effective and economical engineering technique to address saltwater intrusion problems in the Mekong Delta.
WOS关键词SOUTH CHINA SEA ; CLIMATE-CHANGE ; SEAWATER INTRUSION ; TROPICAL CYCLONES ; TIBETAN PLATEAU ; SURFACE-WATER ; LEVEL RISE ; COASTAL ; MANAGEMENT ; IMPACT
资助项目CAS-CSIRO Joint Project[131A11KYSB20180034] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20060402] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0208] ; Tianjin University of Science & Technology (TUST) ; Open Fund of Ministry of Education Key Laboratory of Groundwater Circulation and Environmental Evolution (China University of Geosciences (Beijing))
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000675859500006
出版者SCIENCE PRESS
资助机构CAS-CSIRO Joint Project ; Strategic Priority Research Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Tianjin University of Science & Technology (TUST) ; Open Fund of Ministry of Education Key Laboratory of Groundwater Circulation and Environmental Evolution (China University of Geosciences (Beijing))
源URL[http://ir.igsnrr.ac.cn/handle/311030/164807]  
专题中国科学院地理科学与资源研究所
通讯作者Tang Qiuhong
作者单位1.Tianjin Univ Sci & Technol, Coll Marine & Environm Sci, Tianjin 300457, 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.CSIRO Land & Water, Canberra, ACT 2601, Australia
4.Vietnam Acad Sci & Technol, Univ Sci & Technol Hanoi, Dept Space & Applicat, Hanoi 10000, Vietnam
5.Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, S-41296 Gothenburg, Sweden
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Xiao Han,Tang Yin,Li Haiming,et al. Saltwater intrusion into groundwater systems in the Mekong Delta and links to global change[J]. ADVANCES IN CLIMATE CHANGE RESEARCH,2021,12(3):342-352.
APA Xiao Han.,Tang Yin.,Li Haiming.,Zhang Lu.,NGO-DUC Thanh.,...&Tang Qiuhong.(2021).Saltwater intrusion into groundwater systems in the Mekong Delta and links to global change.ADVANCES IN CLIMATE CHANGE RESEARCH,12(3),342-352.
MLA Xiao Han,et al."Saltwater intrusion into groundwater systems in the Mekong Delta and links to global change".ADVANCES IN CLIMATE CHANGE RESEARCH 12.3(2021):342-352.

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来源：地理科学与资源研究所

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