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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.15220
|2 doi
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|a pubmed24n1037.xml
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|a (NLM)32533721
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Bai, Tongshuo
|e verfasserin
|4 aut
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| 245 |
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|a Interactive global change factors mitigate soil aggregation and carbon change in a semi-arid grassland
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 29.01.2021
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|a Date Revised 29.01.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2020 John Wiley & Sons Ltd.
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|a The ongoing global change is multi-faceted, but the interactive effects of multiple drivers on the persistence of soil carbon (C) are poorly understood. We examined the effects of warming, reactive nitrogen (N) inputs (12 g N m-2 year-1 ) and altered precipitation (+ or - 30% ambient) on soil aggregates and mineral-associated C in a 4 year manipulation experiment with a semi-arid grassland on China's Loess Plateau. Our results showed that in the absence of N inputs, precipitation additions significantly enhanced soil aggregation and promoted the coupling between aggregation and both soil fungal biomass and exchangeable Mg2+ . However, N inputs negated the promotional effects of increased precipitation, mainly through suppressing fungal growth and altering soil pH and clay-Mg2+ -OC bridging. Warming increased C content in the mineral-associated fraction, likely by increasing inputs of root-derived C, and reducing turnover of existing mineral-associated C due to suppression of fungal growth and soil respiration. Together, our results provide new insights into the potential mechanisms through which multiple global change factors control soil C persistence in arid and semi-arid grasslands. These findings suggest that the interactive effects among global change factors should be incorporated to predict the soil C dynamics under future global change scenarios
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|a Journal Article
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|a N-induced acidification
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|a aggregate stability
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|a carbonate
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|a global change
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|a mineral-associated C
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|a soil respiration
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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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|a 7440-44-0
|2 NLM
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| 650 |
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
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|a Wang, Peng
|e verfasserin
|4 aut
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| 700 |
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|a Hall, Steven J
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Fuwei
|e verfasserin
|4 aut
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| 700 |
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|a Ye, Chenglong
|e verfasserin
|4 aut
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| 700 |
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|a Li, Zhen
|e verfasserin
|4 aut
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| 700 |
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|a Li, Shijie
|e verfasserin
|4 aut
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| 700 |
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|a Zhou, Luyao
|e verfasserin
|4 aut
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| 700 |
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|a Qiu, Yunpeng
|e verfasserin
|4 aut
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| 700 |
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|a Guo, Jiuxin
|e verfasserin
|4 aut
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| 700 |
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|a Guo, Hui
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Yi
|e verfasserin
|4 aut
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| 700 |
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|a Hu, Shuijin
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 26(2020), 9 vom: 13. Sept., Seite 5320-5332
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
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|g volume:26
|g year:2020
|g number:9
|g day:13
|g month:09
|g pages:5320-5332
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|u http://dx.doi.org/10.1111/gcb.15220
|3 Volltext
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