13. Overview on Response of Global Soil Carbon Pools to Climate and Land-Use Changes

  1. Thomas J. Sauer7,
  2. John M. Norman8 and
  3. Mannava V. K. Sivakumar9
  1. Thomas Eglin1,
  2. Philippe Ciais1,
  3. Shi Long Piao2,
  4. Pierre Barré3,
  5. Valentin Belassen1,
  6. Patricia Cadule1,
  7. Claire Chenu4,
  8. Thomas Gasser1,
  9. Markus Reichstein5 and
  10. Pete Smith6

Published Online: 7 JUN 2011

DOI: 10.1002/9780470960257.ch13

Sustaining Soil Productivity in Response to Global Climate Change: Science, Policy, and Ethics

Sustaining Soil Productivity in Response to Global Climate Change: Science, Policy, and Ethics

How to Cite

Eglin, T., Ciais, P., Piao, S. L., Barré, P., Belassen, V., Cadule, P., Chenu, C., Gasser, T., Reichstein, M. and Smith, P. (2011) Overview on Response of Global Soil Carbon Pools to Climate and Land-Use Changes, in Sustaining Soil Productivity in Response to Global Climate Change: Science, Policy, and Ethics (eds T. J. Sauer, J. M. Norman and M. V. K. Sivakumar), Wiley-Blackwell, Oxford, UK. doi: 10.1002/9780470960257.ch13

Editor Information

  1. 7

    US Department of Agriculture, Agricultural Research Service, National Laboratory for Agriculture and the Environment, Ames, Iowa, USA

  2. 8

    Department of Soil Science, University of Wisconsin, Madison, USA

  3. 9

    Climate Prediction and Adaptation Branch, World Meteorological Organization, Geneva, Switzerland

Author Information

  1. 1

    Laboratoire des Sciences du Climat et de l'Environment Gif-sur-Yvette, France

  2. 2

    Department of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing, China

  3. 3

    Geology Laboratory, UMR CNRS-ENS, Paris, France

  4. 4

    BIOEMCO Laboratory, AgroParis Techn, Campus Grignon, Thiverval-Grignon, France

  5. 5

    Biogeochemical Model-Data Integration Group, Max-Planck Institute für Biogeochemistry, Jena, Germany

  6. 6

    Institute of Biological and Environmental Sciences, University of Aberdeen, Scotland, UK

Publication History

  1. Published Online: 7 JUN 2011
  2. Published Print: 15 JUL 2011

ISBN Information

Print ISBN: 9780470958575

Online ISBN: 9780470960257

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Keywords:

  • Soil organic carbon;
  • climate change;
  • land-use change;
  • terrestrial carbon-cycle models

Summary

In this chapter, we review the respective influences of land-use change and climate change on the global balance of soil organic carbon (SOC) stocks. Based upon the results of a global biogeochemical model, past-century global land cover change caused a loss of SOC as atmospheric CO2. This human induced SOC decrease was nearly balanced by the net SOC increase elsewhere due to rising CO2 and wetter climate augmenting ecosystem primary productivity. In the future, both climate and land cover changes could cause a net source of atmospheric CO2. Increased litter production may no longer compensate for increased decomposition from warming, particularly in tropical regions, but future SOC changes are highly uncertain. Reduction of the uncertainty requires improvement of future climate projections and land-use scenarios and better understanding of biogeochemical processes controlling SOC turnover.