Temperature-associated increases in the global soil respiration record

Ben Bond-Lamberty () and Allison Thomson
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Ben Bond-Lamberty: Pacific Northwest National Laboratory, Joint Global Change Research Institute at the University of Maryland–College Park, 5825 University Research Court, Suite 3500, College Park, Maryland 20740, USA
Allison Thomson: Pacific Northwest National Laboratory, Joint Global Change Research Institute at the University of Maryland–College Park, 5825 University Research Court, Suite 3500, College Park, Maryland 20740, USA

Nature, 2010, vol. 464, issue 7288, 579-582

Abstract: Soil CO2 loss increases The carbon dioxide generated underground by plants and microbes and released into the atmosphere — termed soil respiration — comprises the second largest terrestrial carbon flux. It has been suggested that the flow of CO2 from this source should change with climate, but this has been difficult to confirm observationally. Ben Bond-Lamberty and Allison Thomson use a two-decade database of soil respiration measurements to show that not only is soil respiration increasing over time, but also that this increase is strongly associated with temperature changes. They estimate that total global soil respiration is increasing by about 0.1% per year, implying a moderate sensitivity to air temperature. This is consistent with an acceleration of the terrestrial carbon cycle in recent decades.

Date: 2010
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DOI: 10.1038/nature08930

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