干旱区生态环境知识资源中心(Arid): Effect of earth-air on water transport in the vadose zone of the loess plateau

Arid

DOI	10.1007/s11104-024-06885-3
	Effect of earth-air on water transport in the vadose zone of the loess plateau
	Fei, Li; Hongshou, Li; Wenjun, Liu; Shunren, Wang; Shengli, Sun; Hongtao, Zhan; Xiaozhu, Wang; Xiaowei, Wang
通讯作者	Hongshou, L
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2024
英文摘要	Background and aims'Earth-air' refers to air in the vadose zone (VZ). Barometric pumping results in the rising and falling of earth-air in the VZ. Earth-air vertical movement (EVM) has an important effect on water transport in the VZ. However, phreatic water is an important source of water in the Loess Plateau, the effect of earth-air on water content is unclear.MethodsThis paper aims to reveal the effect of earth-air on the water content in the VZ of loessal soil by calculating the amount of earth-air and measuring volumetric water content (VWC), temperature, and relative humidity (RH).ResultsOur results showed that the variation of the VWC in the Loess Plateau is directly proportional to the amount of EVM. It is the sum of water vapor gains and losses from earth-air. Also, the amount of water in the earth-air is positively correlated with the frequency of the fluctuations in the atmospheric pressure (AP), thickness of the loess layer, aerated porosity, and gradient of the soil water vapor concentration. The correlation of recorded every 10 min for 3 years between the calculated VWC of the soil and the monitored values is 0.76.ConclusionThis study reveals a new way in which soil water migrates in the Loess Plateau and furthers our understanding of the spatiotemporal distribution mechanism. It also provides a scientific basis for the utilization of scarce water resources in semi-arid areas such as the Loess Plateau region.
英文关键词	Barometric pumping Earth-air vertical movement Loess plateau The vadose zone Water transport
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001290981200002
WOS关键词	BAROMETRIC-PRESSURE ; SOIL ; FLUX ; PRECIPITATION ; MOISTURE
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405089
推荐引用方式 GB/T 7714	Fei, Li,Hongshou, Li,Wenjun, Liu,et al. Effect of earth-air on water transport in the vadose zone of the loess plateau[J],2024.
APA	Fei, Li.,Hongshou, Li.,Wenjun, Liu.,Shunren, Wang.,Shengli, Sun.,...&Xiaowei, Wang.(2024).Effect of earth-air on water transport in the vadose zone of the loess plateau.PLANT AND SOIL.
MLA	Fei, Li,et al."Effect of earth-air on water transport in the vadose zone of the loess plateau".PLANT AND SOIL (2024).