TY - JOUR
T1 - Increased soil emissions of potent greenhouse gases under increased atmospheric CO 2
AU - Van Groenigen, Kees Jan
AU - Osenberg, Craig W.
AU - Hungate, Bruce A.
N1 - Funding Information:
Acknowledgements We thank S. A. Prior, G. B. Runion, F. Hagedorn, A. Niboyet, J. C. Blankinship, W. Cheng, T. Kanerva, R. S. Nowak, S. F. Zitzer, F. A. Dijkstra and J. P. Megonigal for sharing their data. Financial support for this study was provided by DOE-NICCR, NSF (DEB-0949460) and the Irish Research Council for Science, Engineering and Technology, co-funded by Marie Curie Actions under FP7.
PY - 2011/7/14
Y1 - 2011/7/14
N2 - Increasing concentrations of atmospheric carbon dioxide (CO 2) can affect biotic and abiotic conditions in soil, such as microbial activity and water content. In turn, these changes might be expected to alter the production and consumption of the important greenhouse gases nitrous oxide (N 2O) and methane (CH 4) (refs 2, 3). However, studies on fluxes of N 2O and CH 4from soil under increased atmosphericCO 2have not been quantitatively synthesized.Hereweshow, using meta-analysis, that increased CO 2(ranging from 463 to 780 parts per million by volume) stimulates both N 2O emissions from upland soils and CH 4emissions from rice paddies and natural wetlands. Because enhanced greenhouse-gas emissions add to the radiative forcing of terrestrial ecosystems, these emissions are expected to negate at least 16.6 per cent of the climate change mitigation potential previously predicted froman increase in the terrestrial carbon sink under increased atmospheric CO 2concentrations4. Our results therefore suggest that the capacity of land ecosystems to slow climate warming has been overestimated.
AB - Increasing concentrations of atmospheric carbon dioxide (CO 2) can affect biotic and abiotic conditions in soil, such as microbial activity and water content. In turn, these changes might be expected to alter the production and consumption of the important greenhouse gases nitrous oxide (N 2O) and methane (CH 4) (refs 2, 3). However, studies on fluxes of N 2O and CH 4from soil under increased atmosphericCO 2have not been quantitatively synthesized.Hereweshow, using meta-analysis, that increased CO 2(ranging from 463 to 780 parts per million by volume) stimulates both N 2O emissions from upland soils and CH 4emissions from rice paddies and natural wetlands. Because enhanced greenhouse-gas emissions add to the radiative forcing of terrestrial ecosystems, these emissions are expected to negate at least 16.6 per cent of the climate change mitigation potential previously predicted froman increase in the terrestrial carbon sink under increased atmospheric CO 2concentrations4. Our results therefore suggest that the capacity of land ecosystems to slow climate warming has been overestimated.
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U2 - 10.1038/nature10176
DO - 10.1038/nature10176
M3 - Article
C2 - 21753852
AN - SCOPUS:79960398261
SN - 0028-0836
VL - 475
SP - 214
EP - 216
JO - Nature
JF - Nature
IS - 7355
ER -