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| Titel |
Carbon density and anthropogenic land-use influences on net land-use change emissions |
| VerfasserIn |
S. J. Smith, A. Rothwell |
| 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 ; 10, no. 10 ; Nr. 10, no. 10 (2013-10-08), S.6323-6337 |
| Datensatznummer |
250085352
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| Publikation (Nr.) |
 copernicus.org/bg-10-6323-2013.pdf |
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| Zusammenfassung |
| We examine historical and future land-use emissions using a simple
mechanistic carbon-cycle model with regional and ecosystem specific
parameterizations. We use the latest gridded data for historical and future
land-use changes, which includes estimates for the impact of forest
harvesting and secondary forest regrowth. Our central estimate of net terrestrial
land-use change emissions, exclusive of climate–carbon feedbacks, is 250 GtC
over the last 300 yr. This estimate is most sensitive to
assumptions for preindustrial forest and soil carbon densities. We also find
that land-use change emissions estimates are sensitive to the treatment of
crop and pasture lands. These sensitivities also translate into differences
in future terrestrial uptake in the RCP (representative concentration pathway) 4.5 land-use scenario. The estimate of
future uptake obtained here is smaller than the native values from the GCAM
(Global Change Assessment Model) integrated assessment model result due to lower net reforestation in the
RCP4.5 gridded land-use data product. |
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