Experimental warming reveals positive feedbacks to climate change in the Eurasian Steppe

doi:10.1016/j.isprsjprs.2017.06.006

	Experimental warming reveals positive feedbacks to climate change in the Eurasian Steppe
	Zhang, Ximei ; Johnston, Eric R.; Li, Linghao3 ; Konstantinidis, Konstantinos T.; Han, Xingguo3,4
	2017
发表期刊	ISME JOURNAL
ISSN	1751-7362
卷号	11 期号:4 页码:885-895
摘要	Identifying soil microbial feedbacks to increasing temperatures and moisture alterations is critical for predicting how terrestrial ecosystems will respond to climate change. We performed a 5-year field experiment manipulating warming, watering and their combination in a semiarid temperate steppe in northern China. Warming stimulated the abundance of genes responsible for degrading recalcitrant soil organic matter (SOM) and reduced SOM content by 13%. Watering, and warming plus watering also increased the abundance of recalcitrant SOM catabolism pathways, but concurrently promoted plant growth and increased labile SOM content, which somewhat offset SOM loss. The treatments also increased microbial biomass, community complexity and metabolic potential for nitrogen and sulfur assimilation. Both microbial and plant community composition shifted with the treatment conditions, and the sample-to-sample compositional variations of the two communities (pairwise a-diversity distances) were significantly correlated. In particular, microbial community composition was substantially correlated with the dominant plant species (similar to 0.54 Spearman correlation coefficient), much more than with measured soil indices, affirming a tight coupling between both biological communities. Collectively, our study revealed the direction and underlying mechanisms of microbial feedbacks to warming and suggested that semiarid regions of northern steppes could act as a net carbon source under increased temperatures, unless precipitation increases concurrently.
学科领域	Physical Geography ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
DOI	10.1016/j.isprsjprs.2017.06.006
收录类别	SCI
语种	英语
WOS关键词	RNA GENE DATABASE ; INCREASED PRECIPITATION ; COMMUNITY STRUCTURE ; SOIL ; DIVERSITY ; RESPONSES ; RESPIRATION ; DYNAMICS ; RATES ; WATER
WOS记录号	WOS:000408077200021
出版者	SPRINGERNATURE
文献子类	Article
出版地	LONDON
EISSN	1751-7370
资助机构	Strategic Priority Research Program of CAS of China [XDB15010404] ; US Department of EnergyUnited States Department of Energy (DOE) [DE-SC0004601]
作者邮箱	kostas@ce.gatech.edu ; xghan@ibcas.ac.cn
引用统计	被引频次：54[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22247
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Agr Sci, Key Lab Dryland Agr, Inst Environm & Sustainable Dev Agr, MOA, Beijing, Peoples R China 2.Zhang, Ximei; Konstantinidis, Konstantinos T.] Georgia Inst Technol, Sch Biol, Atlanta, GA 30332 USA 3.Johnston, Eric R.; Konstantinidis, Konstantinos T.] Georgia Inst Technol, Sch Civil & Environm Engn, 311 Ferst Dr,Room 3224, Atlanta, GA 30332 USA 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxin Cun, Beijing 100093, Peoples R China 5.Chinese Acad Sci, Inst Appl Ecol, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ximei,Johnston, Eric R.,Li, Linghao,et al. Experimental warming reveals positive feedbacks to climate change in the Eurasian Steppe[J]. ISME JOURNAL,2017,11(4):885-895.
APA	Zhang, Ximei,Johnston, Eric R.,Li, Linghao,Konstantinidis, Konstantinos T.,&Han, Xingguo.(2017).Experimental warming reveals positive feedbacks to climate change in the Eurasian Steppe.ISME JOURNAL,11(4),885-895.
MLA	Zhang, Ximei,et al."Experimental warming reveals positive feedbacks to climate change in the Eurasian Steppe".ISME JOURNAL 11.4(2017):885-895.

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