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| Titel |
Terrestrial carbon sinks in the Brazilian Amazon and Cerrado region predicted from MODIS satellite data and ecosystem modeling |
| VerfasserIn |
C. Potter, S. Klooster, A. Huete, V. Genovese, M. Bustamante, L. Guimaraes Ferreira, R. C. Jr. de Oliveira, R. Zepp |
| 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 ; 6, no. 6 ; Nr. 6, no. 6 (2009-06-03), S.937-945 |
| Datensatznummer |
250003832
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| Publikation (Nr.) |
 copernicus.org/bg-6-937-2009.pdf |
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| Zusammenfassung |
| A simulation model based on satellite observations of monthly vegetation
cover from the Moderate Resolution Imaging Spectroradiometer (MODIS) was used
to estimate monthly carbon fluxes in terrestrial ecosystems of Brazilian
Amazon and Cerrado regions over the period 2000–2004. Net ecosystem
production (NEP) flux for atmospheric CO2 in the region for these years
was estimated. Consistently high carbon sink fluxes in terrestrial ecosystems
on a yearly basis were found in the western portions of the states of Acre
and Rondônia and the northern portions of the state of Pará. These
areas were not significantly impacted by the 2002–2003 El Niño event in
terms of net annual carbon gains. Areas of the region that show periodically
high carbon source fluxes from terrestrial ecosystems to the atmosphere on
yearly basis were found throughout the state of Maranhão and the southern
portions of the state of Amazonas. As demonstrated though tower site
comparisons, NEP modeled with monthly MODIS Enhanced Vegetation Index (EVI)
inputs closely resembles the measured seasonal carbon fluxes at the LBA
Tapajos tower site. Modeling results suggest that the capacity for use of
MODIS Enhanced Vegetation Index (EVI) data to predict seasonal uptake rates
of CO2 in Amazon forests and Cerrado woodlands is strong. |
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