Groundwater dynamic equilibrium evidence for changes of renewability of groundwater in Beijing Plain

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Authors:Zhai Yuanzheng; Wang Jinsheng; Huan Huan; Teng Yanguo
Author Affiliations:Primary:
Beijing Normal University, College of Water Sciences, Beijing, China
Volume Title:Jilin Daxue Xuebao (Diqiu Kexue Ban) Journal of Jilin University (Earth Science Edition)
Source:Jilin Daxue Xuebao (Diqiu Kexue Ban) = Journal of Jilin University (Earth Science Edition), 42(1), p.198-205. Publisher: Jilin University Press, Changchun, China. ISSN: 1671-5888
Publication Date:2012
Note:In Chinese with English summary. 15 refs.; illus., incl. 2 tables
Summary:The aim of this paper is to analyze the spatial and temporal changes of renewability of groundwater in Beijing, which is of great importance for the sustainable utilization and management of groundwater resources. The recharge volume, renewing cycle, renewal rate, and recharge rate of groundwater in the Beijing Plain, especially in mining aquifers, were calculated using the groundwater table dynamic equilibrium method. The renewability of groundwater and changes of its space and time were further evaluated. The study results show that, under natural conditions, the renewability of groundwater is generally strong with a decreasing trend from the piedmont to the central plain. Second, the aquifers in this study have favorable boundary conditions for groundwater recharge from exterior and excellent water-bearing conditions. The amount of precipitation is the bottleneck factor influencing the renewability of groundwater. Third, the renewability of groundwater in the investigated area and all the sub-areas have decreased clearly with mean annual groundwater recharge rate during 2001-2008 (0.28 m/a), decreasing by 35.6% compared with that in 1981-2000. Finally, the mean groundwater level in 2008 is 19.73 m, which is deeper than that in natural conditions (in and before 1960s). The total loss of groundwater volume has reached 101×108 m3 since 2008 (accounting for 18% of the total volume of groundwater in the mining aquifers) because groundwater exploitation intensity is always exceeding the recent renewability of groundwater. The above evidence shows that the issue of groundwater sustainable supply is serious in Beijing under the impacts of climate change and human activity.
Subjects:Aquifer vulnerability; Aquifers; Ground water; Natural recharge; Recharge; Water balance; Water supply; Asia; Beijing China; China; Far East; Hebei China; Beijing Plain
Coordinates:N393000 N410000 E1173000 E1155000
Record ID:2016063541
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute.
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