干旱区生态环境知识资源中心(Arid): Water quality and interaction between groundwater and surface water impacted by agricultural activities in an oasis-desert region

Arid

DOI	10.1016/j.jhydrol.2022.128937
	Water quality and interaction between groundwater and surface water impacted by agricultural activities in an oasis-desert region
	Wang, Weihua; Chen, Yaning; Wang, Wanrui; Zhu, Chenggang; Chen, Yapeng; Liu, Xigang; Zhang, Tianju
通讯作者	Chen, YN
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	617
英文摘要	A comprehensive understanding of groundwater dynamics and its interaction with surface water under the influence of agricultural activities is essential for local agriculture, ecology and resident in arid regions, which is poorly understood in arid oasis-desert region. In our study, with emphasis on a comparison of hydrogeochemical characteristics between the oasis (irrigated) and desert (non-irrigated) areas, the water quality and groundwater surface water interaction of a typical oasis-desert system with a rapid irrigation agriculture development were examined to clarify the effects of agricultural activities on groundwater level and quality using stable isotopic and hydrochemical data of 83 water samples. Results showed that cultivated land area increased by 121.8 % (732.4 km2) during 2000 to 2020, mainly transferring from grassland and bare land. Groundwater EC ranged from 786 to 49,400 mu S/cm, with weakly alkaline. Shallow groundwater had a much higher EC than other water components. Stable isotopic and EC values of shallow groundwater in the non-irrigation areas were much greater than those in the irrigation areas, whereas middle groundwater isotopic values were more depleted in the desert than in the oasis. Shallow groundwater EC value was lower in summer, middle groundwater had higher EC in summer. Streamflow and confined water in the study area are suitable for agricultural irrigation, but phreatic water in the oasis is generally not suitable for irrigation at present. The groundwater chemistry was mainly controlled by strong evaporation, dilution, mixing, water-rock interaction and agricultural drainage. Groundwater in the irrigation areas was recharged by ephemeral runoff seepage, irrigation return flow and subsurface lateral inflow. Long-term development of irrigation agriculture (large-scale land reclamation, irrigation and groundwater pumping) in arid region has caused groundwater level decline and salinization, with a strong interaction between phreatic water and surface water. Hence, decreasing irrigation area and groundwater exploitation, carrying out gradual ecological restoration, improving water-saving efficiency and agricultural drainage system would be the viable method to restore groundwater and maintain the oasis-desert ecosystem coexistence in arid regions in the context of climate change.
英文关键词	Stable isotopes Hydrochemistry Irrigation water quality Groundwater-surface water interaction Agricultural activities Oasis-desert ecosystems
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000910604600001
WOS关键词	RECHARGE SOURCES ; RIVER-BASIN ; SOIL-WATER ; IRRIGATION ; CLIMATE ; HYDROGEOCHEMISTRY ; MANAGEMENT ; CHINA ; MECHANISMS ; RESOURCES
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/2XILL650/397377
推荐引用方式 GB/T 7714	Wang, Weihua,Chen, Yaning,Wang, Wanrui,et al. Water quality and interaction between groundwater and surface water impacted by agricultural activities in an oasis-desert region[J],2023,617.
APA	Wang, Weihua.,Chen, Yaning.,Wang, Wanrui.,Zhu, Chenggang.,Chen, Yapeng.,...&Zhang, Tianju.(2023).Water quality and interaction between groundwater and surface water impacted by agricultural activities in an oasis-desert region.JOURNAL OF HYDROLOGY,617.
MLA	Wang, Weihua,et al."Water quality and interaction between groundwater and surface water impacted by agricultural activities in an oasis-desert region".JOURNAL OF HYDROLOGY 617(2023).