干旱区生态环境知识资源中心(Arid): Biocrusts and its disturbance controls on soil infiltrability in a semi-arid ecosystem

Arid

DOI	10.1002/eco.2324
	Biocrusts and its disturbance controls on soil infiltrability in a semi-arid ecosystem
	Guan, Hongjie; Cao, Rongjiang
通讯作者	Guan, HJ (corresponding author), Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, 35 Qinghua East Rd, Beijing 100083, Peoples R China.
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2021
英文摘要	The biocrust occurrence and its disturbance alters infiltration in the Mu Us Desert. Knowledge of the hydrological properties of biocrusts and parameterization of soil hydraulic properties are crucial to improve simulation of infiltration and soil water dynamics in vegetation-soil-water models. Infiltration experiment was conducted to evaluate the effects of biocrusts and its disturbance on soil infiltrability in the Mu Us Desert, northwest of China. A combined Wooding inverse approach was used for the estimation of soil hydraulic parameters. The results showed that both lichen- and moss-covered biocrusts had a negative influence on infiltration in comparison with the bare soil. Biocrust disturbance alters infiltration, but its effect differs depending on the biocrust and disturbance types. For high-pressure heads, water retention on the moss-covered soils was higher than on the lichen-covered soils. Moreover, trampling caused a higher water retention at high-pressure heads. However, opposite was observed at low-pressure heads. In addition, moss-covered soils had lower hydraulic conductivity than the lichen-covered soils. Additionally, for each biocrust-covered soil, both trampling and scraping resulted in a higher hydraulic conductivity when compared with the undisturbed soils. The occurrence of biocrusts and its disturbance influenced van Genuchten parameters and subsequently affected the water retention curve and thus altered water condition in the biocrust layer. The findings about the parameterization of soil hydraulic properties are crucial for the simulation of eco-hydrological processes in arid and semi-arid ecosystems.
英文关键词	hydraulic parameter infiltration inverse approach lichen moss
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000679464600001
WOS关键词	HYDRAULIC CONDUCTIVITY ; HYDROLOGICAL PROCESSES ; MICROBIOTIC CRUSTS ; WATER INFILTRATION ; LOESS PLATEAU ; SURFACE ; RUNOFF ; EXAMPLE ; VEGETATION ; BEHAVIOR
WOS类目	Ecology ; Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362973
作者单位	[Guan, Hongjie] Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, 35 Qinghua East Rd, Beijing 100083, Peoples R China; [Guan, Hongjie] Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing, Peoples R China; [Cao, Rongjiang] Xingyi Forestry Bur, Xingyi, Peoples R China
推荐引用方式 GB/T 7714	Guan, Hongjie,Cao, Rongjiang. Biocrusts and its disturbance controls on soil infiltrability in a semi-arid ecosystem[J]. 北京林业大学,2021.
APA	Guan, Hongjie,&Cao, Rongjiang.(2021).Biocrusts and its disturbance controls on soil infiltrability in a semi-arid ecosystem.ECOHYDROLOGY.
MLA	Guan, Hongjie,et al."Biocrusts and its disturbance controls on soil infiltrability in a semi-arid ecosystem".ECOHYDROLOGY (2021).