期刊
SCIENCE
卷 353, 期 6294, 页码 72-74出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaf4610
关键词
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资金
- Imperial College
- ClimMani COST Action [ES1308]
- European Research Council [ERC-SyG-610028 IMBALANCE-P]
- Biological and Environmental Research program, Office of Science, U.S. Department of Energy (DOE) [DE SC0008270]
- NSF (Ecosystem Studies Program) [1153401]
- DOE (Environmental System Science Program)
- Royal Netherlands Academy of Arts and Sciences
- DOE
- INTERFACE
- New Phytologist trust
- Direct For Biological Sciences
- Division Of Environmental Biology [0955771, 1153401, 1234162] Funding Source: National Science Foundation
Plants buffer increasing atmospheric carbon dioxide (CO2) concentrations through enhanced growth, but the question whether nitrogen availability constrains the magnitude of this ecosystem service remains unresolved. Synthesizing experiments from around the world, we show that CO2 fertilization is best explained by a simple interaction between nitrogen availability and mycorrhizal association. Plant species that associate with ectomycorrhizal fungi show a strong biomass increase (30 +/- 3%, P < 0.001) in response to elevated CO2 regardless of nitrogen availability, whereas low nitrogen availability limits CO2 fertilization (0 +/- 5%, P = 0.946) in plants that associate with arbuscular mycorrhizal fungi. The incorporation of mycorrhizae in global carbon cyclemodels is feasible, and crucial if we are to accurately project ecosystem responses and feedbacks to climate change.
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