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Temperature sensitivity of young and old soil carbon : same soil, slight differences in 13C natural abundance method, inconsistent results
Journal
Soil biology & biochemistry
Volume
40
Number
10
Pages / Article-Number
2703-2705
Keywords
Carbon dioxide, Mineralisation, Temperature sensitivity, Carbon isotopes
Abstract
Predictions of future climate change critically depend on the temperature sensitivity of soil organic carbon decomposition. One question of debate is whether temperature sensitivity differs between young or labile and old or more stable carbon pools. We re-analysed soil that has previously led to the conclusion that old soil carbon is more temperature sensitive. The re-analysis gave different results compared to the earlier study, most likely due to small differences in an otherwise very similar experimental approach. This study illustrates how conclusions may depend upon details of the experimental setting. (c) 2008 Elsevier Ltd. All rights reserved.
