干旱区生态环境知识资源中心(Arid): Effects of non-isothermal flow on groundwater recharge in a semi-arid region

Arid

DOI	10.1007/s10040-020-02217-8
	Effects of non-isothermal flow on groundwater recharge in a semi-arid region
	Zhang, Zaiyong; Wang, Wenke; Gong, Chengcheng; Zhao, Ming; Wang, Zhoufeng; Ma, Haizhen
通讯作者	Wang, WK
来源期刊	HYDROGEOLOGY JOURNAL
ISSN	1431-2174
EISSN	1435-0157
英文摘要	Groundwater recharge is critical to water circulation in arid and semi-arid regions. The accurate determination of groundwater recharge is required for assessing water resources and effectively managing groundwater, especially in water-limited areas. Based on field experiments and numerical models in a semi-arid region, this study assessed the effect of non-isothermal flow on groundwater recharge. A lysimeter was used in the Mu Us Desert, northwestern China, to monitor groundwater recharge from 1 June to 30 September 2018. The numerical models (isothermal and non-isothermal models) were calibrated with the measured soil moisture and soil temperature. Groundwater recharge was found to take up nearly 29% of rainfall. The non-isothermal model was capable of accurately assessing groundwater recharge based on the accurate calculation of evaporation. The isothermal model, however, underestimated the groundwater recharge by 13.2% and overestimated the evaporation by 16.2%. The isothermal model overestimated evaporation during the drying process. In contrast, cumulative net recharge was underestimated after heavy rainfall events. It was therefore suggested that the non-isothermal flux should be considered in semi-arid regions, especially when assessing groundwater recharge.
英文关键词	Groundwater recharge China Numerical modeling Unsaturated zone
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000556687000002
WOS关键词	WATER ; HEAT ; CONDUCTIVITY ; EVAPORATION ; IMPACT ; MODEL ; ZONE
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328132
作者单位	[Zhang, Zaiyong; Wang, Wenke; Gong, Chengcheng; Zhao, Ming; Wang, Zhoufeng; Ma, Haizhen] Changan Univ, Key Lab Subsurface Hydrol & Ecol Effects Arid Reg, Minist Educ, Xian, Peoples R China; [Zhang, Zaiyong; Wang, Wenke; Gong, Chengcheng; Zhao, Ming; Wang, Zhoufeng; Ma, Haizhen] Changan Univ, Sch Water & Environm, Yanta Rd 126, Xian 710054, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zaiyong,Wang, Wenke,Gong, Chengcheng,et al. Effects of non-isothermal flow on groundwater recharge in a semi-arid region[J].
APA	Zhang, Zaiyong,Wang, Wenke,Gong, Chengcheng,Zhao, Ming,Wang, Zhoufeng,&Ma, Haizhen.
MLA	Zhang, Zaiyong,et al."Effects of non-isothermal flow on groundwater recharge in a semi-arid region".HYDROGEOLOGY JOURNAL