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DOI	10.1016/j.jhydrol.2022.127508
	Evaluating the different methods for estimating groundwater evapotranspiration using diurnal water table fluctuations
	Su Yonghong; Feng Qi; Zhu Gaofeng; Zhang Qi
通讯作者	Su, YH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China.
发表日期	2022
ISSN	0022-1694
EISSN	1879-2707
卷号	607
英文摘要	Riparian ecosystems fundamentally depend on groundwater, and thus accurate estimates of daily groundwater evapotranspiration rate (ETg) is curial for understanding the interactions between groundwater and vegetation. Up to now, various methods (i.e., White, 1932; Hays, 2003; Soylu et al., 2012) have been proposed to estimate daily ETg using the water table fluctuations. The objective of this paper was to evaluate and compare their performances under various water table conditions in field environments. For this purpose, we employed a variety of measurements (i.e., water table levels, latent heat flux and soil water contents) at a riparian forest (T. ramosissima) in Northwest China in 2017. Our results showed that the White method is suitable for use during the water table declining periods. Also, the selected time intervals could have impacts on the estimations of ETg. The Soylu method and the Hays method performed well under various water table conditions. Thus, it seems that the Hays and Soylu methods are more suitable for long-term ETg estimates in field environments. In addition, the percentage of plant transpired water from groundwater varied during the growing seasons. The riparian plants mainly use soil water during the early growing stages, and it tended to use groundwater during the late growing stages. In the future, more isotope-based studies were needed to verify the seasonal patterns of water uptake of the riparian forest.
关键词	ENERGY-BALANCE CLOSURE SOIL-WATER DESERT VEGETATION PATTERNS PLANTS STRATEGIES RESPONSES SHALLOW SHRUBS
英文关键词	Riparian forest; Groundwater evapotranspiration; Water table fluctuation; Specific yield; The White method; The Soylu method; The Hays method
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000752019700002
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253607
作者单位	[Su Yonghong; Feng Qi; Zhang Qi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Zhu Gaofeng] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Su Yonghong,Feng Qi,Zhu Gaofeng,et al. Evaluating the different methods for estimating groundwater evapotranspiration using diurnal water table fluctuations[J]. 中国科学院西北生态环境资源研究院,2022,607.
APA	Su Yonghong,Feng Qi,Zhu Gaofeng,&Zhang Qi.(2022).Evaluating the different methods for estimating groundwater evapotranspiration using diurnal water table fluctuations.JOURNAL OF HYDROLOGY,607.
MLA	Su Yonghong,et al."Evaluating the different methods for estimating groundwater evapotranspiration using diurnal water table fluctuations".JOURNAL OF HYDROLOGY 607(2022).