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| Titel |
Temperature sensitivity of decomposition in relation to soil organic matter pools: critique and outlook |
| VerfasserIn |
M. Reichstein, T. Kätterer, O. Andrén, P. Ciais, E.-D. Schulze, W. Cramer, D. Papale, R. Valentini |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 2, no. 4 ; Nr. 2, no. 4 (2005-11-11), S.317-321 |
| Datensatznummer |
250000633
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| Publikation (Nr.) |
 copernicus.org/bg-2-317-2005.pdf |
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| Zusammenfassung |
| Knorr et al. (2005) concluded that soil organic carbon
pools with longer turnover times are more sensitive to temperature. We show
that this conclusion is equivocal, largely dependent on their specific
selection of data and does not persist when the data set of Kätterer et al. (1998) is analysed in a more appropriate
way. Further, we analyse how statistical properties of the model parameters
may interfere with correlative analyses that relate the Q10 of soil
respiration with the basal rate, where the latter is taken as a proxy for
soil organic matter quality. We demonstrate that negative parameter
correlations between Q10-values and base respiration rates are
statistically expected and not necessarily provide evidence for a higher
temperature sensitivity of low quality soil organic matter. Consequently, we
propose it is premature to conclude that stable soil carbon is more
sensitive to temperature than labile carbon. |
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