期刊
COMMUNICATIONS BIOLOGY
卷 2, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s42003-019-0370-1
关键词
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资金
- Natural Science and Engineering Research Council of Canada
- Canada Foundation for Innovation-Leaders Opportunity Fund (CFI-LOF)
- Ignite RD
- Leverage RD
- Regional Collaboration Research Initiative (RCRI) of Research & Development Corporation, NL
- Seed Bridge Fund of Memorial University
- Agricultural Research Initiative of NL
- Humber River Basin Research Initiative of NL
- Grenfell Campus' Start-up Research Fund
- National Natural Science Foundation of China [31670450]
- Fundamental Research Funds for ICBR [1632018004]
- National Key R&D Program of China [2018YFC0507301, 2018YFD060010402]
Boreal peatlands store an enormous pool of soil carbon that is dependent upon - and vulnerable to changes in - climate, as well as plant community composition. However, how nutrient availability affects the effects of climate and vegetation change on ecosystem processes in these nutrient-poor ecosystems remains unclear. Here we show that although warming promoted higher CH4 emissions, the concurrent addition of N counteracted most (79%) of this effect. The regulation effects of the vegetation functional group, associated with the substrate quality, suggest that CH4 emissions from peatlands under future warming will be less than expected with predicted shrub expansion. In contrast, N2O flux will be enhanced under future warming with predicted shrub expansion. Our study suggests that changes in greenhouse gas emissions in response to future warming and shifts in plant community composition depend on N availability, which reveals the complex interactions that occur when N is not a limiting nutrient.
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