干旱区生态环境知识资源中心(Arid): Biocrust effects on soil infiltrability in the Mu Us Desert: Soil hydraulic properties analysis and modeling

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DOI	10.2478/johh-2021-0026
	Biocrust effects on soil infiltrability in the Mu Us Desert: Soil hydraulic properties analysis and modeling
	Guan, Hongjie; Liu, Xinyu
通讯作者	Guan, HJ (corresponding author), Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China. ; Guan, HJ (corresponding author), Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China. ; Guan, HJ (corresponding author), Beijing Forestry Univ, Beijing Engn Res Ctr Soil & Water Conservat, Beijing 100083, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY AND HYDROMECHANICS
EISSN	1338-4333
出版年	2021
卷号	69 期号:4 页码:378-386
英文摘要	The presence of biocrusts changes water infiltration in the Mu Us Desert. Knowledge of the hydraulic properties of biocrusts and parameterization of soil hydraulic properties are important to improve simulation of infiltration and soil water dynamics in vegetation-soil-water models. In this study, four treatments, including bare land with sporadic cyanobacterial biocrusts (BL), lichen-dominated biocrusts (LB), early-successional moss biocrusts (EMB), and latesuccessional moss biocrusts (LMB), were established to evaluate the effects of biocrust development on soil water infiltration in the Mu Us Desert, northwest of China. Moreover, a combined Wooding inverse approach was used for the estimation of soil hydraulic parameters. The results showed that infiltration rate followed the pattern BL > LB > EMB > LMB. Moreover, the LB, EMB, and LMB treatments had significantly lower infiltration rates than the BL treatment. The saturated soil moisture (theta s) and shape parameter (alpha VG) for the EMB and LMB treatments were higher than that for the BL and LB treatments, although the difference among four treatments was insignificant. Water retention increased with biocrust development at high-pressure heads, whereas the opposite was observed at low-pressure heads. The development of biocrusts influences van Genuchten parameters, subsequently affects the water retention curve, and thereby alters available water in the biocrust layer. The findings regarding the parameterization of soil hydraulic properties have important implications for the simulation of eco-hydrological processes in dryland ecosystems.
英文关键词	Cyanobacteria Lichen Moss Infiltration Inverse approach Hydraulic parameter
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000719814700004
WOS关键词	HYDROLOGICAL BEHAVIOR ; WATER INFILTRATION ; SAND DUNES ; CRUSTS ; RUNOFF ; CONDUCTIVITY ; DISTURBANCE ; EXOPOLYSACCHARIDES ; DIVERSITY ; DRYLANDS
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374029
作者单位	[Guan, Hongjie] Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China; [Guan, Hongjie] Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China; [Guan, Hongjie] Beijing Forestry Univ, Beijing Engn Res Ctr Soil & Water Conservat, Beijing 100083, Peoples R China; [Liu, Xinyu] Beijing Normal Univ, Fac Geog Sci, MOE Engn Res Ctr Desertificat & Blown Sand Contro, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Guan, Hongjie,Liu, Xinyu. Biocrust effects on soil infiltrability in the Mu Us Desert: Soil hydraulic properties analysis and modeling[J],2021,69(4):378-386.
APA	Guan, Hongjie,&Liu, Xinyu.(2021).Biocrust effects on soil infiltrability in the Mu Us Desert: Soil hydraulic properties analysis and modeling.JOURNAL OF HYDROLOGY AND HYDROMECHANICS,69(4),378-386.
MLA	Guan, Hongjie,et al."Biocrust effects on soil infiltrability in the Mu Us Desert: Soil hydraulic properties analysis and modeling".JOURNAL OF HYDROLOGY AND HYDROMECHANICS 69.4(2021):378-386.