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Rising atmospheric CO2 reduces sequestration of root-derived soil carbon

Heath, J., Ayres, E., Possell, M., Bardgett, R.D., Black, H.I.J., Grant, H., Ineson, P. and Kerstiens, G. (2005) Rising atmospheric CO2 reduces sequestration of root-derived soil carbon. Science, 309 (5741). pp. 1711-1713. ISSN 0036-8075

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Abstract

Forests have a key role as carbon sinks, which could potentially mitigate the continuing increase in atmospheric carbon dioxide concentration and associated climate change. We show that carbon dioxide enrichment, although causing short-term growth stimulation in a range of European tree species, also leads to an increase in soil microbial respiration and a marked decline in sequestration of root-derived carbon in the soil. These findings indicate that, should similar processes operate in forest ecosystems, the size of the annual terrestrial carbon sink may be substantially reduced, resulting in a positive feedback on the rate of increase in atmospheric carbon dioxide concentration.

Item Type: Article
Academic Units: The University of York > Stockholm Environment Institute at York (York)
Depositing User: York RAE Import
Date Deposited: 12 Feb 2009 12:51
Last Modified: 12 Feb 2009 12:56
Published Version: http://dx.doi.org/10.1126/science.1110700
Status: Published
Publisher: American Association for the Advancement of Science
Refereed: Yes
Identification Number: 10.1126/science.1110700
URI: http://eprints.whiterose.ac.uk/id/eprint/7494

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