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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.16444
|2 doi
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|a pubmed24n1156.xml
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|a (DE-627)NLM347066283
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|a (NLM)36191158
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|a DE-627
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|c DE-627
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|a eng
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|a Qi, Qi
|e verfasserin
|4 aut
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|a Microbially enhanced methane uptake under warming enlarges ecosystem carbon sink in a Tibetan alpine grassland
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 04.11.2022
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|a Date Revised 25.05.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2022 John Wiley & Sons Ltd.
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|a The alpine grasslands of the Tibetan Plateau store 23.2 Pg soil organic carbon, which becomes susceptible to microbial degradation with climate warming. However, accurate prediction of how the soil carbon stock changes under future climate warming is hampered by our limited understanding of belowground complex microbial communities. Here, we show that 4 years of warming strongly stimulated methane (CH4 ) uptake by 93.8% and aerobic respiration (CO2 ) by 11.3% in the soils of alpine grassland ecosystem. Due to no significant effects of warming on net ecosystem CO2 exchange (NEE), the warming-stimulated CH4 uptake enlarged the carbon sink capacity of whole ecosystem. Furthermore, precipitation alternation did not alter such warming effects, despite the significant effects of precipitation on NEE and soil CH4 fluxes were observed. Metagenomic sequencing revealed that warming led to significant shifts in the overall microbial community structure and the abundances of functional genes, which contrasted to no detectable changes after 2 years of warming. Carbohydrate utilization genes were significantly increased by warming, corresponding with significant increases in soil aerobic respiration. Increased methanotrophic genes and decreased methanogenic genes were observed under warming, which significantly (R2 = .59, p < .001) correlated with warming-enhanced CH4 uptakes. Furthermore, 212 metagenome-assembled genomes were recovered, including many populations involved in the degradation of various organic matter and a highly abundant methylotrophic population of the Methyloceanibacter genus. Collectively, our results provide compelling evidence that specific microbial functional traits for CH4 and CO2 cycling processes respond to climate warming with differential effects on soil greenhouse gas emissions. Alpine grasslands may play huge roles in mitigating climate warming through such microbially enhanced CH4 uptake
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|a Journal Article
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|a alpine grassland
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|a climate warming
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4 |
|a metagenome
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|a methane uptake
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| 650 |
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4 |
|a microbial community
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| 650 |
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4 |
|a soil respiration
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| 650 |
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|a Methane
|2 NLM
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| 650 |
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7 |
|a OP0UW79H66
|2 NLM
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| 650 |
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|a Soil
|2 NLM
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| 650 |
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|a Carbon
|2 NLM
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| 650 |
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7 |
|a 7440-44-0
|2 NLM
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| 650 |
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|a Carbon Dioxide
|2 NLM
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| 650 |
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7 |
|a 142M471B3J
|2 NLM
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| 700 |
1 |
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|a Zhao, Jianshu
|e verfasserin
|4 aut
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1 |
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|a Tian, Renmao
|e verfasserin
|4 aut
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1 |
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|a Zeng, Yufei
|e verfasserin
|4 aut
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|a Xie, Changyi
|e verfasserin
|4 aut
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| 700 |
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|a Gao, Qun
|e verfasserin
|4 aut
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|a Dai, Tianjiao
|e verfasserin
|4 aut
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|a Wang, Hao
|e verfasserin
|4 aut
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|a He, Jin-Sheng
|e verfasserin
|4 aut
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|a Konstantinidis, Konstantinos T
|e verfasserin
|4 aut
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|a Yang, Yunfeng
|e verfasserin
|4 aut
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|a Zhou, Jizhong
|e verfasserin
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|a Guo, Xue
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 28(2022), 23 vom: 03. Dez., Seite 6906-6920
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
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|g volume:28
|g year:2022
|g number:23
|g day:03
|g month:12
|g pages:6906-6920
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|u http://dx.doi.org/10.1111/gcb.16444
|3 Volltext
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