干旱区生态环境知识资源中心(Arid): Temporal and abiotic fluctuations may be preventing successful rehabilitation of soil-stabilizing biocrust communities

Arid

DOI	10.1002/eap.1908
	Temporal and abiotic fluctuations may be preventing successful rehabilitation of soil-stabilizing biocrust communities
	Young, Kristina E.1,3; Bowker, Matthew A.1; Reed, Sasha C.2; Duniway, Michael C.2; Belnap, Jayne2
通讯作者	Young, Kristina E.
来源期刊	ECOLOGICAL APPLICATIONS
ISSN	1051-0761
EISSN	1939-5582
出版年	2019
卷号	29 期号:5
英文摘要	Land degradation is a persistent ecological problem in many arid and semiarid systems globally (drylands hereafter). Most instances of dryland degradation include some form of soil disturbance and/or soil erosion, which can hinder vegetation establishment and reduce ecosystem productivity. To combat soil erosion, researchers have identified a need for rehabilitation of biological soil crusts (biocrusts), a globally relevant community of organisms aggregating the soil surface and building soil fertility. Here, the impact of plant and biocrust cover was tested on soil erosion potential in the pinon-juniper woodlands of Bandelier National Monument, New Mexico, USA. Biocrusts were found to be similarly influential to vascular plants in reducing erosion, largely acting by promoting surface roughness. The potential to rehabilitate biocrusts within the Monument was also tested. Plots were inoculated on eroding soils before the summer monsoon with greenhouse-cultured biocrusts. In a full-factorial design, treatments to reduce or halt erosion were administered to the inoculated plots and their paired controls. These erosion-reduction treatments included barriers to overland flow (flashing), slash placement, and seeding of vascular plants. Dynamic changes to soil stability, penetration resistance, and extractable soil nutrients were observed through time, but no strong effects with the addition of biocrust inoculum, seeding, or erosion intervention treatments were seen. The results do suggest possible ways forward to successfully rehabilitate biocrust, including varying the timing of biocrust application, amending inoculum application with different types of soil stabilization techniques, and adding nutrients to soils. The insights gleaned from the lack of response brings us closer to developing effective techniques to arrest soil loss in these socially and ecologically important dryland systems.
英文关键词	arid and semiarid biological soil crust cyanobacteria dryland erosion modeling pinon-juniper woodland restoration soil fertility
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000474485400006
WOS关键词	LIVING NITROGEN-FIXATION ; PINYON-JUNIPER WOODLAND ; SUCCESSIONAL STAGES ; COLORADO PLATEAU ; SPATIAL SCALES ; CRUSTS ; LANDSCAPES ; RESTORATION ; CARBON ; RATES
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215153
作者单位	1.No Arizona Univ, Sch Forestry, 200 E Pine Knoll Dr, Flagstaff, AZ 86011 USA; 2.US Geol Survey, Southwest Biol Sci Ctr, 2290 SW Resource Blvd, Moab, UT 84532 USA; 3.Univ Texas El Paso, Dept Biol Sci, 500 W Univ Ave, El Paso, TX 79968 USA
推荐引用方式 GB/T 7714	Young, Kristina E.,Bowker, Matthew A.,Reed, Sasha C.,et al. Temporal and abiotic fluctuations may be preventing successful rehabilitation of soil-stabilizing biocrust communities[J]. United States Geological Survey,2019,29(5).
APA	Young, Kristina E.,Bowker, Matthew A.,Reed, Sasha C.,Duniway, Michael C.,&Belnap, Jayne.(2019).Temporal and abiotic fluctuations may be preventing successful rehabilitation of soil-stabilizing biocrust communities.ECOLOGICAL APPLICATIONS,29(5).
MLA	Young, Kristina E.,et al."Temporal and abiotic fluctuations may be preventing successful rehabilitation of soil-stabilizing biocrust communities".ECOLOGICAL APPLICATIONS 29.5(2019).