干旱区生态环境知识资源中心(Arid): Responses of phreatophyte transpiration to falling water table in hyper-arid and arid regions, Northwest China

Arid

DOI	10.31035/cg2021052
	Responses of phreatophyte transpiration to falling water table in hyper-arid and arid regions, Northwest China
	Yin, Li-he; Xu, Dan-dan; Jia, Wu-hui; Zhang, Xin-xin; Zhang, Jun
通讯作者	Yin, LH (corresponding author), China Geol Survey, Xian Ctr, Key Lab Groundwater & Ecol Arid Reg, Xian 710054, Peoples R China.
来源期刊	CHINA GEOLOGY
ISSN	2096-5192
出版年	2021
卷号	4 期号:3 页码:410-420
英文摘要	Quantitative assessment of the impact of groundwater depletion on phreatophytes in (hyper-) arid regions is key to sustainable groundwater management. However, a parsimonious model for predicting the response of phreatophytes to a decrease of the water table is lacking. A variable saturated flow model, HYDRUS-1D, was used to numerically assess the influences of depth to the water table (DWT) and mean annual precipitation (MAP) on transpiration of groundwater-dependent vegetation in (hyper-) arid regions of northwest China. An exponential relationship is found for the normalized transpiration (a ratio of transpiration at a certain DWT to transpiration at 1 m depth, T-a) with increasing DWT, while a positive linear relationship is identified between T-a and annual precipitation. Sensitivity analysis shows that the model is insensitive to parameters, such as saturated soil hydraulic conductivity and water stress parameters, indicated by an insignificant variation (less than 20% in most cases) under +/- 50% changes of these parameters. Based on these two relationships, a universal model has been developed to predict the response of phreatophyte transpiration to groundwater drawdown for (hyper-) arid regions using MAP only. The estimated T-a* from the model is reasonable by comparing with published measured values. (C) 2021 China Geology Editorial Office.
英文关键词	Groundwater depletion Phreatophytes Transpiration Numerical assessment Water table depth (DWT) Mean annual precipitation (MAP) (Hyper-) arid regions Hydrogeological survey engineering Northwest China.
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000721114400004
WOS关键词	INLAND RIVER-BASIN ; LOWER HEIHE RIVER ; HYDRAULIC REDISTRIBUTION ; GROUNDWATER DEPTH ; GREAT-BASIN ; ESTIMATING EVAPOTRANSPIRATION ; IRRIGATION DISTRICT ; POPULUS-EUPHRATICA ; ROOT DISTRIBUTIONS ; VEGETATION INDEX
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374289
作者单位	[Yin, Li-he; Zhang, Jun] China Geol Survey, Xian Ctr, Key Lab Groundwater & Ecol Arid Reg, Xian 710054, Peoples R China; [Xu, Dan-dan] Water Resources Res Inst Shangdong Prov, Jinan 250013, Peoples R China; [Jia, Wu-hui; Zhang, Xin-xin] Chinese Acad Geol Sci, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Yin, Li-he,Xu, Dan-dan,Jia, Wu-hui,et al. Responses of phreatophyte transpiration to falling water table in hyper-arid and arid regions, Northwest China[J],2021,4(3):410-420.
APA	Yin, Li-he,Xu, Dan-dan,Jia, Wu-hui,Zhang, Xin-xin,&Zhang, Jun.(2021).Responses of phreatophyte transpiration to falling water table in hyper-arid and arid regions, Northwest China.CHINA GEOLOGY,4(3),410-420.
MLA	Yin, Li-he,et al."Responses of phreatophyte transpiration to falling water table in hyper-arid and arid regions, Northwest China".CHINA GEOLOGY 4.3(2021):410-420.