干旱区生态环境知识资源中心(Arid): The effect of different biocrusts on soil hydraulic properties in the Tengger Desert, China

Arid

DOI	10.1016/j.geoderma.2022.116304
	The effect of different biocrusts on soil hydraulic properties in the Tengger Desert, China
	Shi, Wei; Pan, Yan-xia; Zhang, Ya-feng; Hu, Rui; Wang, Xin-ping
通讯作者	Wang, XP
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2023
卷号	430
英文摘要	Water redistribution profoundly affects the dryland ecosystem's function. Biological soil crusts (BSCs or biocrusts), which cover a large part of soil surface in arid land, significantly affect the water redistribution, but the results are conflicting at regional scale. In this study, the effects of different biocrusts on soil hydraulic properties, including soil water retention curve, soil water sorptivity, soil hydrophobicity and unsaturated hydraulic conductivity, were clarified in Tengger Desert. The results showed that the presence of BSCs significantly changed soil hydraulic properties. Compared to sand, BSCs increased water holding capacity and soil hydrophobicity, and decreased soil water sorptivity and unsaturated hydraulic conductivity. The enrichment of fine particles during the change from the less to the more developed BSCs contributed to the enhancement of water holding capacity, but this effect was mainly limited at 3-cm layer of soil underneath the ground surface. Soil hydrophobicity decreased with crust development, which contributed to the increase of soil water sorptivity. Unsaturated hydraulic conductivity decreased during the change from the less to the more developed BSCs, which exerted some negative effect on water infiltration. Our results highlight the important role of BSCs in hydraulic properties, and consideration of biocrusts and its hydrological behavior could help us better understand the distribution, movement and retention of soil water in this area.
英文关键词	Biological soil crusts Soil particle composition Soil water retention curve Sorptivity Unsaturated hydraulic conductivity
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000915136400001
WOS关键词	BIOLOGICAL SOIL ; LOESS PLATEAU ; WATER REPELLENCY ; HYDROLOGICAL BEHAVIOR ; LAND DEGRADATION ; CRUSTS ; INFILTRATION ; DESERTIFICATION ; STAGE ; CONDUCTIVITY
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396685
推荐引用方式 GB/T 7714	Shi, Wei,Pan, Yan-xia,Zhang, Ya-feng,et al. The effect of different biocrusts on soil hydraulic properties in the Tengger Desert, China[J],2023,430.
APA	Shi, Wei,Pan, Yan-xia,Zhang, Ya-feng,Hu, Rui,&Wang, Xin-ping.(2023).The effect of different biocrusts on soil hydraulic properties in the Tengger Desert, China.GEODERMA,430.
MLA	Shi, Wei,et al."The effect of different biocrusts on soil hydraulic properties in the Tengger Desert, China".GEODERMA 430(2023).