globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13588
论文题名:
Simple additive simulation overestimates real influence: altered nitrogen and rainfall modulate the effect of warming on soil carbon fluxes
作者: Ni X.; Yang W.; Qi Z.; Liao S.; Xu Z.; Tan B.; Wang B.; Wu Q.; Fu C.; You C.; Wu F.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
卷: 23, 期:8
起始页码: 3371
结束页码: 3381
语种: 英语
英文关键词: additive effect ; climate warming ; drought ; increased precipitation ; interaction ; multifactorial experiment ; nitrogen deposition ; soil carbon fluxes
Scopus关键词: additive ; atmospheric deposition ; carbon flux ; climate change ; climate effect ; drought ; nitrogen ; precipitation (climatology) ; rainfall ; soil carbon ; warming
英文摘要: Experiments and models have led to a consensus that there is positive feedback between carbon (C) fluxes and climate warming. However, the effect of warming may be altered by regional and global changes in nitrogen (N) and rainfall levels, but the current understanding is limited. Through synthesizing global data on soil C pool, input and loss from experiments simulating N deposition, drought and increased precipitation, we quantified the responses of soil C fluxes and equilibrium to the three single factors and their interactions with warming. We found that warming slightly increased the soil C input and loss by 5% and 9%, respectively, but had no significant effect on the soil C pool. Nitrogen deposition alone increased the soil C input (+20%), but the interaction of warming and N deposition greatly increased the soil C input by 49%. Drought alone decreased the soil C input by 17%, while the interaction of warming and drought decreased the soil C input to a greater extent (−22%). Increased precipitation stimulated the soil C input by 15%, but the interaction of warming and increased precipitation had no significant effect on the soil C input. However, the soil C loss was not significantly affected by any of the interactions, although it was constrained by drought (−18%). These results implied that the positive C fluxes–climate warming feedback was modulated by the changing N and rainfall regimes. Further, we found that the additive effects of [warming × N deposition] and [warming × drought] on the soil C input and of [warming × increased precipitation] on the soil C loss were greater than their interactions, suggesting that simple additive simulation using single-factor manipulations may overestimate the effects on soil C fluxes in the real world. Therefore, we propose that more multifactorial experiments should be considered in studying Earth systems. © 2016 John Wiley & Sons Ltd
资助项目: We wish to thank Prof. Björn Berg and Prof. Peter M Groffman for reviewing this paper prior to submission. Xiangyin Ni would like to thank the China Scholarship Council for supporting a joint PhD program (201606910012). This work was financially supported by The National Natural Science Foundation of China (31622018, 31670526 and 31570445) and The Doctoral Program Foundation of Higher Education of China (20135103110002).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60872
Appears in Collections:影响、适应和脆弱性

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作者单位: Long-Term Research Station of Alpine Forest Ecosystems, Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, Chengdu, China; Advanced Science Research Center, The City University of New York, New York, NY, United States; Department of Earth and Environmental Sciences, Brooklyn College of The City University of New York, New York, NY, United States; Collaborative Innovation Center of Ecological Security in the Upper Reaches of the Yangtze River, Chengdu, China; College of Life Science, Neijiang Normal University, Neijiang, China; Laboratory of Forestry, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267, Gontrode (Melle), Belgium; Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang, China

Recommended Citation:
Ni X.,Yang W.,Qi Z.,et al. Simple additive simulation overestimates real influence: altered nitrogen and rainfall modulate the effect of warming on soil carbon fluxes[J]. Global Change Biology,2017-01-01,23(8)
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