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DOI	10.1016/j.ejrh.2021.100840
	Groundwater recharge in hillslopes on the Chinese Loess Plateau
	Tao, Ze; Li, Hongchen; Neil, Eric; Si, Bingcheng
通讯作者	Li, HC ; Si, BC (corresponding author), Ludong Univ, Coll Resources & Environm Engn, Yantai 264025, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
EISSN	2214-5818
出版年	2021
卷号	36
英文摘要	Study region: Yuanzegou Watershed in Qingjian, Wangdonggou watershed in Changwu, the Chinese Loess Plateau. Study focus: Hillslopes are the predominant land form unit on Earth, and despite its importance in maintaining groundwater supplies in many parts of the world, groundwater recharge on hillslopes is poorly understood. We hypothesize that groundwater recharge in the deep unsaturated zones of hillslopes is facilitated mainly by soil matrix flow, and the recharge rates are much smaller in hillslopes than on flat landscapes. To test the hypothesis, seven 15-20 m-long cores were collected from areas of different land uses to determine the groundwater recharge rates and its controls in deep unsaturated zones of hillslopes at a sub-humid and a semi-arid watershed located on the Chinese Loess Plateau. New hydrologic insights for the region: The tritium distribution in each soil profile exhibits a well-defined bell-shape, signifying that soil matrix displacement is the main recharge mechanism. The tritium peak was located between depths of 9.33 m-11.01 m at the semiarid watershed and 6.29 m-7.22 m at the sub-humid watershed, and the recharge rates varied from 24.5 to 33.8 mm yr(-1). These recharge rates account for 4 %-7 % of the long-term precipitation, which is approximately 56 % of the recharge typically seen on flat landscapes. Groundwater recharges were mainly controlled by soil texture, and land use changes, but exhibited little impact from the climatic difference between the two watersheds.
英文关键词	Groundwater recharge Tritium tracer method Hillslope The Loess Plateau Soil texture Land use change
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000687242400005
WOS关键词	MASS-BALANCE METHOD ; UNSATURATED ZONE ; SOIL-MOISTURE ; TRITIUM DETERMINATION ; WATER-BALANCE ; LAND-USE ; EVAPOTRANSPIRATION ; CONCEPTUALIZATION ; TRANSPIRATION ; INFILTRATION
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368568
作者单位	[Tao, Ze; Li, Hongchen; Si, Bingcheng] Ludong Univ, Coll Resources & Environm Engn, Yantai 264025, Peoples R China; [Tao, Ze; Si, Bingcheng] Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China; [Neil, Eric; Si, Bingcheng] Univ Saskatchewan, Dept Soil Sci, Saskatoon SK, Saskatoon, SK S7N 5A8, Canada
推荐引用方式 GB/T 7714	Tao, Ze,Li, Hongchen,Neil, Eric,et al. Groundwater recharge in hillslopes on the Chinese Loess Plateau[J]. 西北农林科技大学,2021,36.
APA	Tao, Ze,Li, Hongchen,Neil, Eric,&Si, Bingcheng.(2021).Groundwater recharge in hillslopes on the Chinese Loess Plateau.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,36.
MLA	Tao, Ze,et al."Groundwater recharge in hillslopes on the Chinese Loess Plateau".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 36(2021).