干旱区生态环境知识资源中心(Arid): Towards stopping land degradation in drylands: Water-saving techniques for cultivating biocrusts in situ

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DOI	10.1002/ldr.3423
	Towards stopping land degradation in drylands: Water-saving techniques for cultivating biocrusts in situ
	Zhao, Yang 1,2; Jia, Rong Liang 1,2; Wang, Jin 1,2
通讯作者	Zhao, Yang
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2019
卷号	30 期号:18 页码:2336-2346
英文摘要	In recent years, inoculating sand surfaces with biocrust organisms has become one of the most promising biotechnological strategies for controlling and reversing land degradation in drylands. To fully exploit this biotechnology on a large scale in drylands, researchers must explore water-saving techniques to incubate biocrusts in situ. To achieve this aim, we tested three methods-broadcasting dried cyanobacteria, spraying fresh cyanobacteria, and broadcasting natural biocrust fragments-to culture biocrusts in situ on the Tengger Desert in Northern China. The cover of incubated biocrust increased during the first 2 months after inoculation (from 6% to more than 20.0% in treatments using biocrust fragments); biocrust cover declined but persisted after 12 months of incubation (13.8% cover in the best treatment, natural cyanobacteria fragments). The cover of cyanobacteria was higher than the cover of lichen in our natural cyanobacteria-lichen crust fragment treatment (NCL; p < .05) after incubating for 12 months. We highlight that cyanobacteria should be selected for biocrust incubation during the initial stages of dryland restoration. Accumulated rainfall was positively related to the cover of incubated biocrust. However, wind speed and wind erosion intensity were both negatively related to the cover of incubated biocrust. In conclusion, broadcasting biocrust fragments is a rapid, efficient, and water-saving biotechnique to cultivate biocrusts in situ. Actions to reduce wind speed and wind erosion, such as mechanical sand fixing, can help stabilize soils and improve crust cultivation.
英文关键词	cyanobacteria eco-friendly biotechnique ecology restoration water-saving
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000484596100001
WOS关键词	BIOLOGICAL SOIL CRUSTS ; CYANOBACTERIAL INOCULATION ; DESERT ; DESERTIFICATION ; ESTABLISHMENT ; COLONIZATION ; RESTORATION ; DETERMINES ; DIVERSITY ; SURFACES
WOS类目	Environmental Sciences ; 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/2XILL650/217485
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China; 2.Univ Chinese Acad Sci, Coll Resource & Environm, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yang,Jia, Rong Liang,Wang, Jin. Towards stopping land degradation in drylands: Water-saving techniques for cultivating biocrusts in situ[J],2019,30(18):2336-2346.
APA	Zhao, Yang,Jia, Rong Liang,&Wang, Jin.(2019).Towards stopping land degradation in drylands: Water-saving techniques for cultivating biocrusts in situ.LAND DEGRADATION & DEVELOPMENT,30(18),2336-2346.
MLA	Zhao, Yang,et al."Towards stopping land degradation in drylands: Water-saving techniques for cultivating biocrusts in situ".LAND DEGRADATION & DEVELOPMENT 30.18(2019):2336-2346.