干旱区生态环境知识资源中心(Arid): Biocrusts mediate a new mechanism for land degradation under a changing climate

Arid

DOI	10.1038/s41558-021-01249-6
	Biocrusts mediate a new mechanism for land degradation under a changing climate
	Phillips, M. L.; McNellis, B. E.; Howell, A.; Lauria, C. M.; Belnap, J.; Reed, S. C.
通讯作者	Phillips, ML
来源期刊	NATURE CLIMATE CHANGE
ISSN	1758-678X
EISSN	1758-6798
出版年	2022
卷号	12 期号:1 页码:71-+
英文摘要	Global concerns for desertification have focused on the slow recovery of extensive and expanding drylands following disturbance, which may be exacerbated by climate change. Biological soil crusts (biocrusts) are photosynthetic soil communities found in drylands worldwide, which are central to the stability and resilience of dryland ecosystems, but vulnerable to global change. Here we use multiple decade-long experiments to investigate the consequences of climate and land-use change on biocrusts and soil stability. Biocrusts recovered rapidly under ambient temperatures but warming interacted with the precipitation disturbance to halt recovery. Moreover, warming alone caused losses of mosses, lichens and soil stability. Our results present a new mechanism contributing to land degradation in drylands whereby warming drives a state shift in biocrust communities, which degrades soil stability. The synergistic effects of climate and land-use change co-occur globally and our results support projections of increased desertification and lowered dryland resilience under warming. Land degradation in drylands impacts livelihoods and productivity and is affected by biocrusts that stabilize the soil. Long-term experiments show that biocrust recovery from disturbance is faster than expected, but stopped under warming, with warming alone causing loss of biocrust groups and soil stability.
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000741629200004
WOS关键词	BIOLOGICAL SOIL CRUSTS ; ALTERNATIVE STABLE STATES ; PHYSICAL DISTURBANCE ; PRECIPITATION ; STABILITY ; DESERTIFICATION ; COMMUNITIES ; VARIABILITY ; SCENARIOS ; HYDROLOGY
WOS类目	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376583
推荐引用方式 GB/T 7714	Phillips, M. L.,McNellis, B. E.,Howell, A.,et al. Biocrusts mediate a new mechanism for land degradation under a changing climate[J],2022,12(1):71-+.
APA	Phillips, M. L.,McNellis, B. E.,Howell, A.,Lauria, C. M.,Belnap, J.,&Reed, S. C..(2022).Biocrusts mediate a new mechanism for land degradation under a changing climate.NATURE CLIMATE CHANGE,12(1),71-+.
MLA	Phillips, M. L.,et al."Biocrusts mediate a new mechanism for land degradation under a changing climate".NATURE CLIMATE CHANGE 12.1(2022):71-+.