干旱区生态环境知识资源中心(Arid): Using hydrogen and oxygen stable isotopes to estimate soil water evaporation loss under continuous evaporation conditions

Arid

DOI	10.1002/hyp.14885
	Using hydrogen and oxygen stable isotopes to estimate soil water evaporation loss under continuous evaporation conditions
	Li, Yang; Huo, Siyuan; Guo, Jing; Sun, Jie; Pan, Jie; Wang, Deng; Tan, Qiankun; Pei, Bingbing
通讯作者	Huo, SY
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2023
卷号	37 期号:5
英文摘要	The use of hydrogen and oxygen stable isotopes in estimating soil water evaporation loss under continuous evaporation conditions is crucial for gaining insight into soil water movement processes under different conditions. In this study, via high-frequency meteorological monitoring and continuous soil water measurements, we investigated the variation of hydrogen and oxygen stable isotopes and soil water fluxes with soil depth and time for soil water at different depths under continuous evaporation conditions. The precipitation isotope delta(rain) and soil water flux changes were determined using the Craig-Gordon model. It was shown that the isotopic fractionation of soil water in the surface layer 0-30 cm was dominated by a gaseous-dominated transport process, and that both the delta O-18 and delta D values and evaporative intensity decreased with increasing soil depth. In terms of time dynamics, the evaporation loss of soil water varies continuously with seasons and is the highest during summer. The use of delta O-18 to quantify the soil water evaporation loss provides greater accuracy than that provided by delta D. The relative errors in the evaporation loss calculated based on delta O-18 and delta D were 13% and 34%, respectively. A sensitivity analysis of each parameter indicated that the relative error calculated by the model is primarily determined by temperature and relative humidity uncertainty. The sensitivity analysis reveals the critical evaporation intensity of soil water at various depths from unsteady to steady state evaporation. When the relative humidity changes by 1%, the evaporation loss fraction changes from 0.001 to 0.034. The results of this study are important for quantifying the soil water resources in arid and semi-arid areas without precipitation using stable isotopes of hydrogen and oxygen.
英文关键词	Craig-Gordon (C-G) model evaporation loss hydrogen and oxygen stable isotopes soil water evaporation uncertainty and sensitivity analysis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000978542300001
WOS关键词	PREFERENTIAL FLOW ; FRACTIONATION ; DEUTERIUM ; MOVEMENT ; TEMPERATURE ; IRRIGATION ; TRANSPORT ; RECHARGE ; TRACERS ; SYSTEM
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396871
推荐引用方式 GB/T 7714	Li, Yang,Huo, Siyuan,Guo, Jing,et al. Using hydrogen and oxygen stable isotopes to estimate soil water evaporation loss under continuous evaporation conditions[J],2023,37(5).
APA	Li, Yang.,Huo, Siyuan.,Guo, Jing.,Sun, Jie.,Pan, Jie.,...&Pei, Bingbing.(2023).Using hydrogen and oxygen stable isotopes to estimate soil water evaporation loss under continuous evaporation conditions.HYDROLOGICAL PROCESSES,37(5).
MLA	Li, Yang,et al."Using hydrogen and oxygen stable isotopes to estimate soil water evaporation loss under continuous evaporation conditions".HYDROLOGICAL PROCESSES 37.5(2023).