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| Titel |
Plant-driven variation in decomposition rates improves projections of global litter stock distribution |
| VerfasserIn |
V. Brovkin, P. M. Bodegom, T. Kleinen, C. Wirth, W. K. Cornwell, J. H. C. Cornelissen, J. Kattge |
| 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 ; 9, no. 1 ; Nr. 9, no. 1 (2012-01-30), S.565-576 |
| Datensatznummer |
250006682
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| Publikation (Nr.) |
 copernicus.org/bg-9-565-2012.pdf |
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| Zusammenfassung |
| Plant litter stocks are critical, regionally for their role in fueling fire
regimes and controlling soil fertility, and globally through their feedback
to atmospheric CO2 and climate. Here we employ two global databases
linking plant functional types to decomposition rates of wood and leaf
litter (Cornwell et al., 2008; Weedon et al., 2009) to improve future
projections of climate and carbon cycle using an intermediate complexity
Earth System model. Implementing separate wood and leaf litter
decomposabilities and their temperature sensitivities for a range of plant
functional types yielded a more realistic distribution of litter stocks in
all present biomes with the exception of boreal forests and projects a
strong increase in global litter stocks by 35 Gt C and a concomitant small
decrease in atmospheric CO2 by 3 ppm by the end of this century.
Despite a relatively strong increase in litter stocks, the modified
parameterization results in less elevated wildfire emissions because of a
litter redistribution towards more humid regions. |
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