干旱区生态环境知识资源中心(Arid): Experimental study on simultaneous heat-water-salt migration of bare soil subjected to evaporation

Arid

DOI	10.1016/j.jhydrol.2022.127710
	Experimental study on simultaneous heat-water-salt migration of bare soil subjected to evaporation
	Zhang, Xudong; Ye, Peng; Wu, Yajun; Zhai, Encheng
通讯作者	Wu, YJ ; Zhai, EC
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2022
卷号	609
英文摘要	Evaporation in shallow soil has a great influence on the properties of surface soil. Therefore, under evaporation conditions, research on the rule and mechanism of heat-water-salt migration in surface soil has great significance for engineering geology and environmental science. In this study, with full consideration of the initial water content, salt content, atmospheric temperature, and groundwater supply, a series of indoor evaporation tests were performed on shallow saline soil to observe the heat-water-salt migration process. In addition, before and after the evaporation test, the soil microstructure at different depths was observed and analysed to explore the influence of heat-water-salt migration on the soil. The results show that during the evaporation process, salt carried by water migrates in the soil column, and the water-vapour phase transition causes salt accumulation, which also leads to the electrical conductivity (EC) profile showing a V-shape, and the salt content in the middle of the soil column is lower than that in the end. In addition, high atmospheric temperature significantly reduces the surface water content but alleviates salt accumulation. Under the condition of groundwater supplementation, the salt accumulation in the soil column surface is rapid. By observing the microstructure, it can be seen that a flocculent structure exists in the soil before evaporation. After evaporation, the surface microstructure changes significantly, and pores and salt crystals can be observed. The results provide a reference for understanding heat water-salt transport in arid areas.
英文关键词	Soil evaporation Bare soil Heat-water-salt migration Microstructure
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000788728400001
WOS关键词	FLOW
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393483
推荐引用方式 GB/T 7714	Zhang, Xudong,Ye, Peng,Wu, Yajun,et al. Experimental study on simultaneous heat-water-salt migration of bare soil subjected to evaporation[J],2022,609.
APA	Zhang, Xudong,Ye, Peng,Wu, Yajun,&Zhai, Encheng.(2022).Experimental study on simultaneous heat-water-salt migration of bare soil subjected to evaporation.JOURNAL OF HYDROLOGY,609.
MLA	Zhang, Xudong,et al."Experimental study on simultaneous heat-water-salt migration of bare soil subjected to evaporation".JOURNAL OF HYDROLOGY 609(2022).