干旱区生态环境知识资源中心(Arid): A new method for quantifying threshold water tables in a phreatic aquifer feeding an irrigation district in northwestern China

Arid

DOI	10.1016/j.agwat.2020.106595
	A new method for quantifying threshold water tables in a phreatic aquifer feeding an irrigation district in northwestern China
	Wang, Yong; Chen, Minjian; Yan, Long; Zhao, Yong; Deng, Wei
通讯作者	Yan, L (corresponding author), China Inst Water Resources & Hydropower Res, Beijing, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	244
英文摘要	In semi-arid northwestern China, the groundwater level continues to decline with the development of the irrigated agriculture, resulting in grassland ecosystem degradation. Threshold water tables play an important role in sustaining both grassland ecology and irrigated agriculture. This paper proposes a new method to calculate the threshold water tables based on the quantification of the transport rate of wetting front, by which the optimal layout of well groups in an irrigation district will be discussed; furthermore, this paper will discuss the advantages of using the threshold water tables as the management target to regulate groundwater pumping and ensure an appropriate water table for the ecological system in the irrigation district. The proposed method is applied to an irrigation district in the West Liaohe River Plain, which is a typical area with mixed agricultural and rural lands in northwestern China. The threshold water table in the case study irrigation district is estimated as 10 m; the interference radii of the pumping wells are 340 m, 270 m and 150 m in three different sub-districts, where the well depth is greater than 100 m, 60-80 m and less than 60 m, and the interference radius values are 225-310 m, 165-225 m and 150 m, respectively.
英文关键词	Threshold water tables Layout of pumping wells Interference radius Irrigation Ecological security
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000603305400006
WOS关键词	GROUNDWATER
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347653
作者单位	[Wang, Yong; Chen, Minjian; Yan, Long; Zhao, Yong; Deng, Wei] China Inst Water Resources & Hydropower Res, Beijing, Peoples R China; [Wang, Yong] State Key Lab Simulat & Regulat Water Cycle River, A-1 Fuxing Rd Haidian Dist, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yong,Chen, Minjian,Yan, Long,et al. A new method for quantifying threshold water tables in a phreatic aquifer feeding an irrigation district in northwestern China[J],2021,244.
APA	Wang, Yong,Chen, Minjian,Yan, Long,Zhao, Yong,&Deng, Wei.(2021).A new method for quantifying threshold water tables in a phreatic aquifer feeding an irrigation district in northwestern China.AGRICULTURAL WATER MANAGEMENT,244.
MLA	Wang, Yong,et al."A new method for quantifying threshold water tables in a phreatic aquifer feeding an irrigation district in northwestern China".AGRICULTURAL WATER MANAGEMENT 244(2021).