干旱区生态环境知识资源中心(Arid): Mechanical sand fixing is more beneficial than chemical sand fixing for artificial cyanobacteria crust colonization and development in a sand desert

Arid

DOI	10.1016/j.apsoil.2019.04.008
	Mechanical sand fixing is more beneficial than chemical sand fixing for artificial cyanobacteria crust colonization and development in a sand desert
	Zhao, Yang 1; Wang, Jin
通讯作者	Zhao, Yang
来源期刊	APPLIED SOIL ECOLOGY
ISSN	0929-1393
EISSN	1873-0272
出版年	2019
卷号	140 页码:115-120
英文摘要	The incubation of biological soil crusts (BSCs) can potentially determine a decrease in abiotic stress levels, which can then shift the state of the ecosystem and combat desertification due to their key ecological roles in drylands. Stabilized sand soil surface is the primary factor for natural and induced BSCs successful establishment in harsh dryland environments. Mechanical sand fixing, such as straw checkerboard barriers and chemical sand fixing are two effective ways to stabilized sandy soil surface. The impacts of these two sand fixing methods on artificial cyanobacteria colonization have not been frequently been compared in the field. In this study, five cyanobacteria, Anabaena sp., Nostoc sp., Phormidium sp., Scytonema sp. and Tolypothrix sp. were isolated and cultured. The straw checkerboard method was represented mechanical sand fixing and W-OH (modified water-borne polyurethane) method was used to test chemical sand fixing. Coverage, thickness and biomass of artificial cyanobacterial crust as well as wind erosion intensity and dust deposition were measured after 16 months of inoculation. Results show that the highest coverage, thickness and biomass of artificial cyanobacterial crust was in the straw checkerboard mechanical method, with cyanobacteria measuring higher than other treatments (p < 0.05) at 28.3%, 3.01 mm and 0.24 mg cm(-2), respectively, and showed both positive relationships with dust deposition and herb coverage, but negatively with wind erosion intensity (p < 0.05). Thus, mechanical sand fixing was more beneficial to artificial cyanobacterial crust incubation in field conditions rather than chemical sand fixing, due to sustaining increase in dust deposition to sand surface stability. In addition, mechanical sand fixing uses lessees water than chemical sand fixing. Our results also indicated that annual herb coverage should be closely managed during the artificial cyanobacterial crust incubation in field conditions.
英文关键词	Biological soil crust Dust deposition Herb coverage Straw checkerboard
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000466929200014
WOS关键词	BIOLOGICAL SOIL CRUSTS ; TENGGER-DESERT ; LAND DEGRADATION ; ALGAL CRUSTS ; DESERTIFICATION ; TECHNOLOGY ; DETERMINES ; VEGETATION ; DIVERSITY ; BIOCRUSTS
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214276
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Gansu, Peoples R China; 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Stress Physiol & Ecol Cold & Arid Reg Gan, Lanzhou 730000, Gansu, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yang,Wang, Jin. Mechanical sand fixing is more beneficial than chemical sand fixing for artificial cyanobacteria crust colonization and development in a sand desert[J]. 中国科学院西北生态环境资源研究院,2019,140:115-120.
APA	Zhao, Yang,&Wang, Jin.(2019).Mechanical sand fixing is more beneficial than chemical sand fixing for artificial cyanobacteria crust colonization and development in a sand desert.APPLIED SOIL ECOLOGY,140,115-120.
MLA	Zhao, Yang,et al."Mechanical sand fixing is more beneficial than chemical sand fixing for artificial cyanobacteria crust colonization and development in a sand desert".APPLIED SOIL ECOLOGY 140(2019):115-120.