干旱区生态环境知识资源中心(Arid): Evolution of Groundwater in Yinchuan Oasis at the Upper Reaches of the Yellow River after Water-Saving Transformation and Its Driving Factors

Arid

DOI	10.3390/ijerph17041304
	Evolution of Groundwater in Yinchuan Oasis at the Upper Reaches of the Yellow River after Water-Saving Transformation and Its Driving Factors
	Mi, Lina 1,2; Tian, Juncang 1,2; Si, Jianning 3; Chen, Yuchun 3; Li, Yinghai 1,2; Wang, Xinhe 4
通讯作者	Tian, Juncang ; Li, Yinghai
来源期刊	INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
EISSN	1660-4601
出版年	2020
卷号	17 期号:4
英文摘要	In recent years, the amount of water diverted from the Yellow River has been decreasing year by year, which is the biggest problem for the development and utilization of water resources in Yinchuan Oasis (YCO). Through the implementation of the Agricultural Water-saving Transformation Project (AWSTP), water resource shortage in the YCO has been alleviated greatly, and ecological degradation problems, such as soil salinization, have also been effectively addressed. However, how the shallow groundwater in YCO has changed after the AWSTP remains unclear. This paper, based on a lot of statistical data and measured data, and by using statistical and geostatistical methods, reveals the evolution of shallow groundwater in YCO in the past 18 years (2000-2017), since the implementation of the AWSTP and its driving factors, from two aspects: groundwater dynamics and groundwater quality. The results show that compared with the initial stage of AWSTP, the amount of water diverted from the Yellow River for the YCO reduced by 36%, and accordingly, the average groundwater depth in the irrigation period increased from 0.98 m to 2.01 m, representing an increase of 1.03 m, and an average annual increase of 6cm. Moreover, the depth increase in the irrigation period is higher than that in the non-irrigation period, and that in the Northern Irrigation Area (NIA) is higher than that in the Southern Irrigation Area (SIA). Furthermore, the groundwater storage is decreasing at a rate of 855.6 x 10(4) m(3)a(-1), and the cumulative storage has reduced by nearly 1.54 x 10(8) m(3), indicating that it is in a long-term negative equilibrium. In terms of temporal and spatial distribution of total dissolved solids (TDS) in groundwater, the TDS in SIA and NIA decreased from 1.41 gL(-1) and 1.84 gL(-1) to 1.15 gL(-1) and 1.77 gL(-1), respectively. The saline water area with a TDS above 5 gL(-1) and the freshwater area with a TDS below 1 gL(-1) decreased by 16.6 km(2) and 334.4 km(2), respectively, while the brackish water area with a TDS of 13 gL(-1) increased by 492 km(2). The spatial and temporal distribution heterogeneity of TDS in groundwater is reduced and is in a slight desalinized trend overall. However, the groundwater in some areas, such as the Xingqing District, Jinfeng District, Xixia District, Yongning County, Helan County and Huinong District of Yinchuan Oasis, is at risk of further salinization. Due to the agricultural water-saving caused by the reduction of water amount diverted from the Yellow River, the groundwater recharge in YCO was reduced by 36.3%, which, together with measures such as drainage, groundwater exploitation, and industrial restructuring, drives the groundwater circulation in the YCO to a new equilibrium. This study can help us to understand the influencing process and mechanism of agricultural water-saving on groundwater systems in YCO and provide reference for efficient use and optimal allocation and management of agricultural water resources.
英文关键词	Yinchuan Oasis agricultural water-saving groundwater groundwater storage ecological environment
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000522388500180
WOS关键词	HETAO IRRIGATION DISTRICT ; BASIN ; IMPACTS ; EVAPOTRANSPIRATION ; MANAGEMENT ; EFFICIENCY ; SALINITY ; RECHARGE ; AREAS ; CHINA
WOS类目	Environmental Sciences ; Public, Environmental & Occupational Health
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314771
作者单位	1.Ningxia Univ, Sch Civil & Hydraul Engn, Yinchuan 750021, Ningxia, Peoples R China; 2.Minist Educ, Engn Res Ctr, Efficient Uses Water Resources Arid Modern Agr, Yinchuan 750021, Ningxia, Peoples R China; 3.Hydrol & Water Resources Monitoring & Early Warni, Groundwater Monitoring Dept, Yinchuan 750001, Ningxia, Peoples R China; 4.Ningxia Hydroenvironm Geol Survey Inst, Comprehens Study Off, Yinchuan 750021, Ningxia, Peoples R China
推荐引用方式 GB/T 7714	Mi, Lina,Tian, Juncang,Si, Jianning,et al. Evolution of Groundwater in Yinchuan Oasis at the Upper Reaches of the Yellow River after Water-Saving Transformation and Its Driving Factors[J],2020,17(4).
APA	Mi, Lina,Tian, Juncang,Si, Jianning,Chen, Yuchun,Li, Yinghai,&Wang, Xinhe.(2020).Evolution of Groundwater in Yinchuan Oasis at the Upper Reaches of the Yellow River after Water-Saving Transformation and Its Driving Factors.INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,17(4).
MLA	Mi, Lina,et al."Evolution of Groundwater in Yinchuan Oasis at the Upper Reaches of the Yellow River after Water-Saving Transformation and Its Driving Factors".INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 17.4(2020).