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
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.
|Institution:||The University of York|
|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|
|Publisher:||American Association for the Advancement of Science|