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Potential carbon emissions dominated by carbon dioxide from thawed permafrost soils


Increasing temperatures in northern high latitudes are causing permafrost to thaw1, making large amounts of previously frozen organic matter vulnerable to microbial decomposition2. Permafrost thaw also creates a fragmented landscape of drier and wetter soil conditions3,4 that determine the amount and form (carbon dioxide (CO2), or methane (CH4)) of carbon (C) released to the atmosphere. The rate and form of C release control the magnitude of the permafrost C feedback, so their relative contribution with a warming climate remains unclear5,6. We quantified the effect of increasing temperature and changes from aerobic to anaerobic soil conditions using 25 soil incubation studies from the permafrost zone. Here we show, using two separate meta-analyses, that a 10 °C increase in incubation temperature increased C release by a factor of 2.0 (95% confidence interval (CI), 1.8 to 2.2). Under aerobic incubation conditions, soils released 3.4 (95% CI, 2.2 to 5.2) times more C than under anaerobic conditions. Even when accounting for the higher heat trapping capacity of CH4, soils released 2.3 (95% CI, 1.5 to 3.4) times more C under aerobic conditions. These results imply that permafrost ecosystems thawing under aerobic conditions and releasing CO2 will strengthen the permafrost C feedback more than waterlogged systems releasing CO2 and CH4 for a given amount of C.

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Figure 1: Ratio of C release with a 10 °C increase in incubation temperature.
Figure 2: Ratio of C release from permafrost-affected soils comparing aerobic to anaerobic incubation conditions.
Figure 3: Contribution of CH4-C to total anaerobic C release for boreal forest, peatland and tundra ecosystems.

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  1. Brown, J. & Romanovsky, V. E. Report from the International Permafrost Association: state of permafrost in the first decade of the 21st century. Permafrost Periglacial Process. 19, 255–260 (2008).

    Article  Google Scholar 

  2. Harden, J. W. et al. Field information links permafrost carbon to physical vulnerabilities of thawing. Geophys. Res. Lett. 39, L15704 (2012).

    Article  Google Scholar 

  3. Jorgenson, M. T. et al. Reorganization of vegetation, hydrology and soil carbon after permafrost degradation across heterogeneous boreal landscapes. Environ. Res. Lett. 8, 035017 (2013).

    Article  Google Scholar 

  4. Johnson, K. D. et al. Permafrost and organic layer interactions over a climate gradient in a discontinuous permafrost zone. Environ. Res. Lett. 8, 035028 (2013).

    Article  Google Scholar 

  5. Schuur, E. A. G. et al. Vulnerability of permafrost carbon to climate change: implications for the global carbon cycle. Bioscience 58, 701–714 (2008).

    Article  Google Scholar 

  6. Schuur, E. A. G. et al. Climate change and the permafrost carbon feedback. Nature 520, 171–179 (2015).

    Article  CAS  Google Scholar 

  7. Hugelius, G. et al. Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps. Biogeosciences 11, 6573–6593 (2014).

    Article  Google Scholar 

  8. Tarnocai, C. et al. Soil organic carbon pools in the northern circumpolar permafrost region. Glob. Biogeochem. Cycles 23, Gb2023 (2009).

    Article  Google Scholar 

  9. IPCC in Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) (Cambridge Univ. Press, 2013).

  10. Dutta, K., Schuur, E. A. G., Neff, J. C. & Zimov, S. A. Potential carbon release from permafrost soils of Northeastern Siberia. Glob. Change Biol. 12, 2336–2351 (2006).

    Article  Google Scholar 

  11. Jorgenson, M. T., Shur, Y. L. & Pullman, E. R. Abrupt increase in permafrost degradation in Arctic Alaska. Geophys. Res. Lett. 33, L02503 (2006).

    Article  Google Scholar 

  12. Schädel, C. et al. Circumpolar assessment of permafrost C quality and its vulnerability over time using long-term incubation data. Glob. Change Biol. 20, 641–652 (2014).

    Article  Google Scholar 

  13. Schmidt, M. W. I. et al. Persistence of soil organic matter as an ecosystem property. Nature 478, 49–56 (2011).

    Article  CAS  Google Scholar 

  14. Myhre, G. et al. in Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) 659–740 (IPCC, Cambridge Univ. Press, 2013).

    Google Scholar 

  15. Hamdi, S., Moyano, F., Sall, S., Bernoux, M. & Chevallier, T. Synthesis analysis of the temperature sensitivity of soil respiration from laboratory studies in relation to incubation methods and soil conditions. Soil Biol. Biochem. 58, 115–126 (2013).

    Article  CAS  Google Scholar 

  16. Yvon-Durocher, G. et al. Methane fluxes show consistent temperature dependence across microbial to ecosystem scales. Nature 507, 488–491 (2014).

    Article  CAS  Google Scholar 

  17. McCalley, C. K. et al. Methane dynamics regulated by microbial community response to permafrost thaw. Nature 514, 478–481 (2014).

    Article  CAS  Google Scholar 

  18. Olefeldt, D., Turetsky, M. R., Crill, P. M. & McGuire, A. D. Environmental and physical controls on northern terrestrial methane emissions across permafrost zones. Glob. Change Biol. 19, 589–603 (2013).

    Article  Google Scholar 

  19. Prater, J. L., Chanton, J. P. & Whiting, G. J. Variation in methane production pathways associated with permafrost decomposition in collapse scar bogs of Alberta, Canada. Glob. Biogeochem. Cycles 21, GB4004 (2007).

    Article  Google Scholar 

  20. Treat, C. C. et al. A pan-Arctic synthesis of CH4 and CO2 production from anoxic soil incubations. Glob. Change Biol. 21, 2787–2803 (2015).

    Article  Google Scholar 

  21. Collins, M. et al. in Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) 1029–1136 (IPCC, Cambridge Univ. Press, 2013).

    Google Scholar 

  22. Luo, Y. Q., Wan, S. Q., Hui, D. F. & Wallace, L. L. Acclimatization of soil respiration to warming in a tall grass prairie. Nature 413, 622–625 (2001).

    Article  CAS  Google Scholar 

  23. Sistla, S. A. et al. Long-term warming restructures Arctic tundra without changing net soil carbon storage. Nature 497, 615–618 (2013).

    Article  CAS  Google Scholar 

  24. Natali, S. M., Schuur, E. A. G., Webb, E. E., Pries, C. E. H. & Crummer, K. G. Permafrost degradation stimulates carbon loss from experimentally warmed tundra. Ecology 95, 602–608 (2014).

    Article  Google Scholar 

  25. Koven, C. D. Boreal carbon loss due to poleward shift in low-carbon ecosystems. Nature Geosci. 6, 452–456 (2013).

    Article  CAS  Google Scholar 

  26. Hartley, I. P. et al. A potential loss of carbon associated with greater plant growth in the European Arctic. Nature Clim. Change 2, 875–879 (2012).

    Article  CAS  Google Scholar 

  27. Avis, C. A., Weaver, A. J. & Meissner, K. J. Reduction in areal extent of high-latitude wetlands in response to permafrost thaw. Nature Geosci. 4, 444–448 (2011).

    Article  CAS  Google Scholar 

  28. Slater, A. G. & Lawrence, D. M. Diagnosing present and future permafrost from climate models. J. Clim. 26, 5608–5623 (2013).

    Article  Google Scholar 

  29. Smith, L. C., Sheng, Y., MacDonald, G. M. & Hinzman, L. D. Disappearing arctic lakes. Science 308, 1429 (2005).

    Article  CAS  Google Scholar 

  30. Andresen, C. G. & Lougheed, V. L. Disappearing Arctic tundra ponds: fine-scale analysis of surface hydrology in drained thaw lake basins over a 65 year period (1948–2013). J. Geophys. Res. 120, 2014JG002778 (2015).

    Google Scholar 

  31. Hedges, L. V., Gurevitch, J. & Curtis, P. S. The meta-analysis of response ratios in experimental ecology. Ecology 80, 1150–1156 (1999).

    Article  Google Scholar 

  32. Konstantopoulos, S. Fixed effects and variance components estimation in three-level meta-analysis. Res. Synth. Methods 2, 61–76 (2011).

    Article  Google Scholar 

  33. Viechtbauer, W. Conducting meta-analyses in R with the metafor package. J. Stat. Softw. 36, 1–48 (2010).

    Google Scholar 

  34. Calcagno, V. & de Mazancourt, C. glmulti: model selection and multimodel inference made easy. R package version 1.0.7 (2013);

  35. Burnham, K. P. & Anderson, D. R. Model Selection and Multimodel Interference (Springer, 2002).

    Google Scholar 

  36. R: A Language and Environment for Statistical Computing (R Foundation for Statistical Computing, 2012).

  37. Kane, E. S. et al. Response of anaerobic carbon cycling to water table manipulation in an Alaskan rich fen. Soil Biol. Biochem. 58, 50–60 (2013).

    Article  CAS  Google Scholar 

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We would like to thank B. Robinson for assistance with meta-data extraction and J. Barta and I. Kohoutova for help with generating incubation data. Financial support was provided by the National Science Foundation Vulnerability of Permafrost Carbon Research Coordination Network Grant no. 955713 with continued support from the National Science Foundation Research Synthesis, and Knowledge Transfer in a Changing Arctic: Science Support for the Study of Environmental Arctic Change Grant no. 1331083. Author contributions were also supported by grants to individuals: Department of Energy, Office of Biological and Environmental Research, Terrestrial Ecosystem Science (TES) Program (DE-SC0006982) to E.A.G.S.; UK Natural Environment Research Council funding to I.P.H. and C.E.-A. (NE/K000179/1); German Research Foundation (DFG, Excellence cluster CliSAP) to C.K.; Department of Ecosystem Biology, Grant agency of South Bohemian University, GAJU project no. 146/2013/P and GAJU project no. 146/2013/D to H.S.; National Science Foundation Office of Polar Programs (1312402) to S.M.N.; National Science Foundation Division of Environmental Biology (0423385) and National Science Foundation Division of Environmental Biology (1026843), both to the Marine Biological Laboratory, Woods Hole, Massachusetts; additionally, the Next-Generation Ecosystem Experiments in the Arctic (NGEE Arctic) project is supported by the Biological and Environmental Research programme in the US Department of Energy (DOE) Office of Science. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the DOE under Contract no. DE-AC05-00OR22725. Support for C.B. came from European Union (FP-7-ENV-2011, project PAGE21, contract no. 282700), Academy of Finland (project CryoN, decision no. 132 045), Academy of Finland (project COUP, decision no. 291691; part of the European Union Joint Programming Initiative, JPI Climate), strategic funding of the University of Eastern Finland (project FiWER) and Maj and Tor Nessling Foundation and for P.J.M. from Nordic Center of Excellence (project DeFROST).

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Authors and Affiliations



C.S. designed the study together with E.A.G.S.; C.S. compiled the database and extracted data from the literature with help from M.L. and S.M.N. M.K.-F.B. and C.S. performed the analysis. C.S. wrote the manuscript. All other authors either contributed data and provided input to the manuscript, or performed essential tasks in the field and laboratory for the included data sets.

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Correspondence to Christina Schädel.

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The authors declare no competing financial interests.

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Schädel, C., Bader, MF., Schuur, E. et al. Potential carbon emissions dominated by carbon dioxide from thawed permafrost soils. Nature Clim Change 6, 950–953 (2016).

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