干旱区生态环境知识资源中心(Arid): Contribution of rainfall and agricultural returns to groundwater recharge in arid areas

Arid

DOI	10.1016/j.jhydrol.2019.06.029
	Contribution of rainfall and agricultural returns to groundwater recharge in arid areas
	Jafari, Hadi; Sudegi, Abdolaziz; Bagheri, Rahim
通讯作者	Jafari, Hadi
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	575 页码:1230-1238
英文摘要	Estimation of groundwater recharge is more essential for managing aquifers, particularly in arid regions with limited access to water resources. Low potentiality of aquifer recharge, deep groundwater levels and impacts from other important sources like irrigation return flow add more complexities to estimating recharge in these areas. In this research, physical and chemical (tracer) techniques including water-table fluctuation (WTF), chloride mass balance (CMB), stable isotopes (H-2 and O-18) and water-budget equation (WBE) were applied to estimate recharge into the Birjand alluvial aquifer in arid areas of SE Iran with a mean annual precipitation of about 147 mm. Recharge rates, in ascending order, were calculated about 5.0, 9.2, 33.2 and 41.7 mm year(-1) using isotopes, CMB, WTF and WBE methods, respectively. Isotopes and chloride tracers assessed the rainfall related aquifer recharge, while the other methods represented total recharge including rainfall infiltration plus deep percolation of irrigation water (irrigation return flow). Total recharge rate of the Birjand aquifer was estimated in average at 37.5 mm year(-1), partitioned between the rainfall recharge (7.0 mm year(-1)) and irrigation return flow (30.5 mm year(-1)). The values represent an average rainfall recharge coefficient of about 4.8% of the annual precipitation and return flow coefficient of 15% of the total annual applied water for irrigation. Recharge estimates are recommended as initial guesses for calculating water-balance in order to manage valuable groundwater resources in other arid-land aquifers. The study highlighted priorities of the stable isotope and WTF methods in estimating rainfall and total (rainfall + return flows) recharge of the groundwater in arid regions, respectively.
英文关键词	Water-table Chloride Stable isotope Budget Birjand Iran
类型	Article
语种	英语
国家	Iran
收录类别	SCI-E
WOS记录号	WOS:000488143000096
WOS关键词	STABLE-ISOTOPES ; REGION ; FLOW ; BASIN
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/2XILL650/217165
作者单位	Shahrood Univ Technol, Shahrood, Iran
推荐引用方式 GB/T 7714	Jafari, Hadi,Sudegi, Abdolaziz,Bagheri, Rahim. Contribution of rainfall and agricultural returns to groundwater recharge in arid areas[J],2019,575:1230-1238.
APA	Jafari, Hadi,Sudegi, Abdolaziz,&Bagheri, Rahim.(2019).Contribution of rainfall and agricultural returns to groundwater recharge in arid areas.JOURNAL OF HYDROLOGY,575,1230-1238.
MLA	Jafari, Hadi,et al."Contribution of rainfall and agricultural returns to groundwater recharge in arid areas".JOURNAL OF HYDROLOGY 575(2019):1230-1238.