Variations of Groundwater Dynamics in Alluvial Aquifers with Reclaimed Water Restoring the Overlying River, Beijing, China

doi:10.3390/w13060806

	Variations of Groundwater Dynamics in Alluvial Aquifers with Reclaimed Water Restoring the Overlying River, Beijing, China
	He, Zekang 1,3; Han, Dongmei 1,3; Song, Xianfang 1,3; Yang, Lihu 1,3; Zhang, Yinghua 1,3; Ma, Ying 1,3; Bu, Hongmei 1,3; Li, Binghua 4; Yang, Shengtian 2
刊名	WATER
	2021-03-01
卷号	13 期号:6 页码:24
关键词	heterogenous increased hydraulic gradient leakage reclaimed water transport
DOI	10.3390/w13060806
通讯作者	Han, Dongmei(handm@igsnrr.ac.cn) ; Song, Xianfang(songxf@igsnrr.ac.cn)
英文摘要	Some of the rivers in northern China are dried, and reclaimed water (RW) is used to restore these degraded river ecosystems, during which the RW could recharge the aquifer by river bank infiltration. From 2007 to 2018, 2.78 x 10(8) m(3) of RW has been replenished to the dried Chaobai River (Shunyi reach), Beijing, China, which is located on the edge of one depression cone in groundwater caused by groundwater over-pumping. The groundwater hydrodynamic variations and the flow path of the RW were identified by eight-year hydrological, hydrochemical, and stable isotopic data, together with multivariate statistical analysis. The RW infiltration drastically impacts the groundwater dynamics with a spatiotemporal variation. The 30-m depth groundwater levels at Perennial intake reach increased quickly around 3 m after 2007, which indicated that they were dominated by RW infiltration. Other 30-m depth groundwater levels were controlled by precipitation recharge from 2007 to 2011, showing significant seasonal variations. In 2012, with more RW transferred to the river, the hydrodynamic impact of the RW on 30-m depth aquifer expanded downstream. However, the 50-m and 80-m depth groundwater levels showed decreasing trend with seasonal variations, due to groundwater pumping. The 30-m depth aquifer was mainly recharged by RW, being evidenced by the enriched delta H-2 and delta O-18. The depleted delta H-2 and delta O-18 of the 50-m and 80-m depth groundwater indicated that they were dominated by regional groundwater with meteoric origin. The heterogenous properties of the multi-layer alluvial aquifer offer the preferential flow path for RW transport in the aquifers. The proportion of the RW in the aquifers decreases with depth that was calculated by the chloride conservative mixing model. The increased lateral hydraulic gradient (0.43%) contributes to the RW transport in the 30-m depth aquifer. RW usage changed 30-m depth groundwater type from Ca center dot Mg-HCO3 to Na center dot Ca center dot Mg-HCO3 center dot Cl. RW preferentially recharged the 50-m and 80-m depth aquifers by vertical leakage.
资助项目	National Natural Science Foundation of China[41730749] ; Beijing Municipal Natural Science Foundation[8212035] ; MAR-China Managed Aquifer Recharge in the North China Plain[17-M08-GEU]
WOS关键词	NORTH CHINA ; COASTAL AQUIFER ; STABLE-ISOTOPES ; SURFACE-WATER ; RECHARGE ; CHAOBAI ; FIELD ; FLOW ; HYDROCHEMISTRY ; CONTAMINATION
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000651949200001
资助机构	National Natural Science Foundation of China ; Beijing Municipal Natural Science Foundation ; MAR-China Managed Aquifer Recharge in the North China Plain
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162785]
专题	中国科学院地理科学与资源研究所
通讯作者	Han, Dongmei; Song, Xianfang
作者单位	1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 4.Beijing Water Sci & Technol Inst, Beijing 100048, Peoples R China
推荐引用方式 GB/T 7714	He, Zekang,Han, Dongmei,Song, Xianfang,et al. Variations of Groundwater Dynamics in Alluvial Aquifers with Reclaimed Water Restoring the Overlying River, Beijing, China[J]. WATER,2021,13(6):24.
APA	He, Zekang.,Han, Dongmei.,Song, Xianfang.,Yang, Lihu.,Zhang, Yinghua.,...&Yang, Shengtian.(2021).Variations of Groundwater Dynamics in Alluvial Aquifers with Reclaimed Water Restoring the Overlying River, Beijing, China.WATER,13(6),24.
MLA	He, Zekang,et al."Variations of Groundwater Dynamics in Alluvial Aquifers with Reclaimed Water Restoring the Overlying River, Beijing, China".WATER 13.6(2021):24.