干旱区生态环境知识资源中心(Arid): Impacts of rainfall-induced physical crust on near-surface soil pore structure after drying

Arid

DOI	10.1016/j.catena.2024.107880
	Impacts of rainfall-induced physical crust on near-surface soil pore structure after drying
	Feng, Ruikun; Liu, Guanheng; Chen, Yiru; Wang, Chenfeng; Zhang, Qingwei; Wang, Jian
通讯作者	Wang, J
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2024
卷号	238
英文摘要	Rainfall events in arid and semi-arid regions lead to the formation of a physical crust on the soil surface, and such crusts have significant implications for soil hydrological processes. However, previous research has primarily focused on the macroscopic effects of the physical crust, while the influence of soil moisture changes on the soil pore structure is poorly understood. In this study, we simulated two types of physical crusts (structural and depositional) under different rainfall durations using artificial rainfall simulations. We employed X-ray computed tomography (XCT) to analyze the geometric shapes and topological structures of the near-surface soil pores. The results revealed stratified characteristics of soil porosity caused by rainfall-induced physical crust. The porosity in the crustal layer was lower and exhibited a denser pore structure than that of the underlying soil. The thickness of the physical crust varied with the duration of rainfall, with depositional crusts thickening under longer rainfall durations, whereas the opposite was observed for structural crusts. Both types of physical crusts induced significant changes in the pore structure of the upper soil layer, including a decrease in average pore size and an increase in pore density. Analysis of pore connectivity indicated an increase in isolated pores within the physical crust, suggesting a reduction in soil permeability and airflow capacity. This study contributes insights for agricultural soil management in arid and semi-arid regions by revealing the nuanced effects of rainfallinduced physical crusts on near-surface soil pore characteristics.
英文关键词	Soil structure X-ray analysis Bare soil rainfall Structural and depositional crusts Soil pore morphology Structural analysis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001184120900001
WOS关键词	LOESS PLATEAU ; PENETRATION RESISTANCE ; KINETIC-ENERGY ; EROSION ; RUNOFF ; INFILTRATION ; INDICATORS ; DYNAMICS ; SEAL
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403134
推荐引用方式 GB/T 7714	Feng, Ruikun,Liu, Guanheng,Chen, Yiru,et al. Impacts of rainfall-induced physical crust on near-surface soil pore structure after drying[J],2024,238.
APA	Feng, Ruikun,Liu, Guanheng,Chen, Yiru,Wang, Chenfeng,Zhang, Qingwei,&Wang, Jian.(2024).Impacts of rainfall-induced physical crust on near-surface soil pore structure after drying.CATENA,238.
MLA	Feng, Ruikun,et al."Impacts of rainfall-induced physical crust on near-surface soil pore structure after drying".CATENA 238(2024).