globalchange  > 气候变化与战略
DOI: 10.1111/gcb.14852
论文题名:
Fire affects the taxonomic and functional composition of soil microbial communities, with cascading effects on grassland ecosystem functioning
作者: Yang S.; Zheng Q.; Yang Y.; Yuan M.; Ma X.; Chiariello N.R.; Docherty K.M.; Field C.B.; Gutknecht J.L.M.; Hungate B.A.; Niboyet A.; Le Roux X.; Zhou J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2020
卷: 26, 期:2
语种: 英语
英文关键词: Californian grasslands ; climate change ; fire ; GeoChip ; high-throughput sequencing ; microbial communities
Scopus关键词: climate change ; ecosystem function ; fire behavior ; functional group ; grassland ; microbial community ; soil carbon ; soil microorganism ; soil nitrogen ; taxonomy ; temperature effect ; California ; Jasper Ridge Biological Preserve ; United States ; article ; California ; climate change ; competition ; controlled study ; global change ; grassland ; high throughput sequencing ; nonhuman ; plant growth ; soil microflora ; soil respiration ; structural equation modeling
英文摘要: Fire is a crucial event regulating the structure and functioning of many ecosystems. Yet few studies have focused on how fire affects taxonomic and functional diversities of soil microbial communities, along with changes in plant communities and soil carbon (C) and nitrogen (N) dynamics. Here, we analyze these effects in a grassland ecosystem 9 months after an experimental fire at the Jasper Ridge Global Change Experiment site in California, USA. Fire altered soil microbial communities considerably, with community assembly process analysis showing that environmental selection pressure was higher in burned sites. However, a small subset of highly connected taxa was able to withstand the disturbance. In addition, fire decreased the relative abundances of most functional genes associated with C degradation and N cycling, implicating a slowdown of microbial processes linked to soil C and N dynamics. In contrast, fire stimulated above- and belowground plant growth, likely enhancing plant–microbe competition for soil inorganic N, which was reduced by a factor of about 2. To synthesize those findings, we performed structural equation modeling, which showed that plants but not microbial communities were responsible for significantly higher soil respiration rates in burned sites. Together, our results demonstrate that fire ‘reboots’ the grassland ecosystem by differentially regulating plant and soil microbial communities, leading to significant changes in soil C and N dynamics. © 2019 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159478
Appears in Collections:气候变化与战略

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作者单位: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China; Institute for Environmental Genomics and Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, United States; Department of Global Ecology, Carnegie Institution for Science, Stanford, CA, United States; Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, United States; Department of Soil Ecology, Helmholtz Centre for Environmental Research – UFZ, Halle, Germany; Center for Ecosystem Science and Society, Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States; Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States; Institut d'Ecologie et des Sciences de l'Environnement de Paris (Sorbonne Université, CNRS, INRA, IRD, Université Paris Diderot, UPEC), Paris, France; AgroParisTech, Paris, France; Laboratoire d'Ecologie Microbienne, CNRS, INRA, Université de Lyon, Université Lyon 1, UMR INRA 1418, UMR CNRS 5557, Villeurbanne, France; Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Department of Soil, Water, and Climate, University of Minnesota, Saint Paul, MN, United States

Recommended Citation:
Yang S.,Zheng Q.,Yang Y.,et al. Fire affects the taxonomic and functional composition of soil microbial communities, with cascading effects on grassland ecosystem functioning[J]. Global Change Biology,2020-01-01,26(2)
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