干旱区生态环境知识资源中心(Arid): Stabilizing sand from dried-up lakebeds against wind erosion by accelerating biological soil crust development

Arid

DOI	10.1016/j.ejsobi.2020.103189
	Stabilizing sand from dried-up lakebeds against wind erosion by accelerating biological soil crust development
	Kheirfam, Hossein 1,2; Asadzadeh, Farrokh 3,4
通讯作者	Kheirfam, Hossein
来源期刊	EUROPEAN JOURNAL OF SOIL BIOLOGY
ISSN	1164-5563
EISSN	1778-3615
出版年	2020
卷号	98
英文摘要	Land degradation and the resulting desertification often lead to sand flowing from deserts and/or dried-up lakebeds and into habitable zones; a problem that has intensified in recent decades. We cultivated locally collected biological soil crust (BSC) bacteria (Bacillus subtilis strain) and cyanobacteria (Nostoc sp. and Oscillatoria sp.) from the dried-up bed of Lake Urmia, northwest Iran. To evaluate the ability of BSC to stabilize the sandy lakebed soil, bacteria and cyanobacteria were used to inoculate experimental trays of sandy soil from the same area, under laboratory conditions. After 120 days, we simulated winds at a speed of 72 km h(-1) for three 10-min intervals (30 min in overall) to measure the sand transport rate as well as the durability and fragility of the BSCs during the wind erosion process, using an open circuit wind tunnel. We found that the bacteria, cyanobacteria, and cyanobacteria + bacteria inoculation reduced the sand flowing by 42.3, 96.6, and 95.9%, respectively, as compared to the control. We found that in addition to creating a protective cover on the soil surface, cyanobacteria created a strong bond between the soil particles through their exudation of exopolysaccharides and network of filaments, increasing the ability of the sand to withstand wind forces. Our inoculation technique was an effective and natural way to stabilize moving sand. Future research should replicate our methods under natural conditions to evaluate the potential for large-scale restoration.
英文关键词	Biocrust Combating desertification Ecosystem restoration Lake Urmia Soil cyanobacteria Soil inoculation
类型	Article
语种	英语
国家	Iran
收录类别	SCI-E
WOS记录号	WOS:000534259000011
WOS关键词	PRONE SOIL ; CYANOBACTERIA ; INOCULATION ; SEQUESTRATION ; BACTERIA
WOS类目	Ecology ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319038
作者单位	1.Urmia Univ, Fac Agr & Nat Resources, Dept Range & Watershed Management, Orumiyeh, Iran; 2.Urmia Univ, Urmia Lake Res Inst, Dept Environm Sci, Orumiyeh, Iran; 3.Urmia Univ, Fac Agr & Nat Resources, Dept Soil Sci, Orumiyeh, Iran; 4.Urmia Univ, Urmia Lake Res Inst, Dept Sediment Proc, Orumiyeh, Iran
推荐引用方式 GB/T 7714	Kheirfam, Hossein,Asadzadeh, Farrokh. Stabilizing sand from dried-up lakebeds against wind erosion by accelerating biological soil crust development[J],2020,98.
APA	Kheirfam, Hossein,&Asadzadeh, Farrokh.(2020).Stabilizing sand from dried-up lakebeds against wind erosion by accelerating biological soil crust development.EUROPEAN JOURNAL OF SOIL BIOLOGY,98.
MLA	Kheirfam, Hossein,et al."Stabilizing sand from dried-up lakebeds against wind erosion by accelerating biological soil crust development".EUROPEAN JOURNAL OF SOIL BIOLOGY 98(2020).