干旱区生态环境知识资源中心(Arid): Changes in groundwater levels across China from 2005 to 2016

Arid

DOI	10.1016/j.jhydrol.2023.129781
	Changes in groundwater levels across China from 2005 to 2016
	Zhang, Dan; Liu, Xiaomang; Simmons, Craig T.; Zhang, Lu; Zhang, Qi
通讯作者	Liu, XM
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	623
英文摘要	Groundwater provides perennial, ubiquitous and high-quality freshwater supplies for humanity globally. Difficulties in the collection and collation of groundwater records have hindered our understanding of large-scale groundwater dynamics. This study collected groundwater level depth (GLD) records from 909 groundwater wells across China and the spatiotemporal changes in GLD were investigated in unconfined and confined aquifers from 2005 to 2016 nationally. The GLD distributions were highly heterogeneous, with average (standard deviation) GLDs of 11.9 (20.3) and 21.6 (26.4) m in unconfined and confined aquifers, respectively. From 2005 to 2016, the GLDs decreased significantly over the energy-limited region due to increased precipitation but increased significantly over the water-limited region due to high groundwater abstraction. The GLD changes in confined aquifers were larger than those in unconfined aquifers due to the smaller storativity in confined aquifers. The correlations between the GLDs and GRACE total water storage (TWS) anomalies over the waterlimited region were higher than those over the energy-limited region, indicating that groundwater storage contributed more to TWS over arid areas than humid areas. This study highlights the increasing groundwater storage in the energy-limited region and the decreasing groundwater storage in the water-limited region, i.e., enhanced regional differences in groundwater resources. The results improve our understanding of groundwater dynamics in different aquifers and climatic conditions and hence advance robust groundwater management and policy development in China.
英文关键词	Groundwater level depth Climatic conditions GRACE TWS Water-limited conditions
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001023249000001
WOS关键词	HAIHE RIVER-BASIN ; GLOBAL PATTERNS ; WATER ; EVAPOTRANSPIRATION ; IRRIGATION ; IMPACTS ; TRENDS ; DEPLETION ; BALANCE ; SURFACE
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397406
推荐引用方式 GB/T 7714	Zhang, Dan,Liu, Xiaomang,Simmons, Craig T.,et al. Changes in groundwater levels across China from 2005 to 2016[J],2023,623.
APA	Zhang, Dan,Liu, Xiaomang,Simmons, Craig T.,Zhang, Lu,&Zhang, Qi.(2023).Changes in groundwater levels across China from 2005 to 2016.JOURNAL OF HYDROLOGY,623.
MLA	Zhang, Dan,et al."Changes in groundwater levels across China from 2005 to 2016".JOURNAL OF HYDROLOGY 623(2023).