The carbon balance of South America: a review of the status, decadal trends and main determinants

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dc.contributor.authorGLOOR, M.
dc.contributor.authorGATTI, L.
dc.contributor.authorBRIENEN, R.
dc.contributor.authorFELDPAUSCH, T.R.
dc.contributor.authorPHILLIPS, O.L.
dc.contributor.authorMILLER, J.
dc.contributor.authorOMMETTO, J.P.
dc.contributor.authorROCHA, H.
dc.contributor.authorBAKER, T.
dc.contributor.authorJONG, B. de
dc.contributor.authorHOUGHTON, R.A.
dc.contributor.authorMALHI, Y.
dc.contributor.authorARAGAO, L.E.O.C.
dc.contributor.authorGUYOT, J.L.
dc.contributor.authorZHAO, K.
dc.contributor.authorJACKSON, R.
dc.contributor.authorPEYLIN, P.
dc.contributor.authorSITCH, S.
dc.contributor.authorPOULTER, B.
dc.contributor.authorLOMAS, M.
dc.contributor.authorZAEHLE, S.
dc.contributor.authorHYNTINGFORD, C.
dc.contributor.authorLEVY, P.
dc.contributor.authorLLOYD, J.
dc.coverageInternacionalpt_BR
dc.date.accessioned2016-11-10T13:26:38Z
dc.date.available2016-11-10T13:26:38Z
dc.date.issued2012pt_BR
dc.description.abstractWe summarise the contemporary carbon budget of South America and relate it to its dominant controls: population and economic growth, changes in land use practices and a changing atmospheric environment and climate. Component flux estimate methods we consider sufficiently reliable for this purpose encompass fossil fuel emission inventories, biometric analysis of old-growth rainforests, estimation of carbon release associated with deforestation based on remote sensing and inventories, and agricultural export data. Alternative methods for the estimation of the continental-scale net land to atmosphere CO2 flux, such as atmospheric transport inverse modelling and terrestrial biosphere model predictions, are, we find, hampered by the data paucity, and improved parameterisation and validation exercises are required before reliable estimates can be obtained. From our analysis of available data, we suggest that South America was a net source to the atmosphere during the 1980s (similar to 0.3-0.4 Pg C a(-1)) and close to neutral (similar to 0.1 Pg C a(-1)) in the 1990s. During the latter period, carbon uptake in old-growth forests nearly compensated for the carbon release associated with fossil fuel burning and deforestation. Annual mean precipitation over tropical South America as inferred from Amazon River discharge shows a long-term upward trend. Although, over the last decade dry seasons have tended to be drier, with the years 2005 and 2010 in particular experiencing strong droughts. On the other hand, precipitation during the wet seasons also shows an increasing trend. Air temperatures have also increased slightly. Also with increases in atmospheric CO2 concentrations, it is currently unclear what effect these climate changes are having on the forest carbon balance of the region. Current indications are that the forests of the Amazon Basin have acted as a substantial long-term carbon sink, but with the most recent measurements suggesting that this sink may be weakening. Economic development of the tropical regions of the continent is advancing steadily, with exports of agricultural products being an important driver and witnessing a strong upturn over the last decade.
dc.format.extent5407-5430pt_BR
dc.identifier.citationGLOOR, M.; GATTI, L.; BRIENEN, R.; FELDPAUSCH, T.R.; PHILLIPS, O.L.; MILLER, J.; OMMETTO, J.P.; ROCHA, H.; BAKER, T.; JONG, B. de; HOUGHTON, R.A.; MALHI, Y.; ARAGAO, L.E.O.C.; GUYOT, J.L.; ZHAO, K.; JACKSON, R.; PEYLIN, P.; SITCH, S.; POULTER, B.; LOMAS, M.; ZAEHLE, S.; HYNTINGFORD, C.; LEVY, P.; LLOYD, J. The carbon balance of South America: a review of the status, decadal trends and main determinants. <b>Biogeosciences</b>, v. 9, n. 12, p. 5407-5430, 2012. DOI: <a href="https://dx.doi.org/10.5194/bg-9-5407-2012">10.5194/bg-9-5407-2012</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/26780.
dc.identifier.doi10.5194/bg-9-5407-2012pt_BR
dc.identifier.fasciculo12pt_BR
dc.identifier.issn1726-4170pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4908-8974
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/26780
dc.identifier.vol9pt_BR
dc.relation.ispartofBiogeosciencespt_BR
dc.rightsopenAccesspt_BR
dc.subjectcarbon
dc.subjectsouth america
dc.subjectreviews
dc.subjectpopulations
dc.subjectgrowth
dc.subjectland use
dc.subjectclimates
dc.subjectgeography
dc.subjectpopulation density
dc.subjecthuman populations
dc.titleThe carbon balance of South America: a review of the status, decadal trends and main determinantspt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorT. BAKER
ipen.autorY. MALHI
ipen.autorK. ZHAO
ipen.autorR. JACKSON
ipen.autorP. PEYLIN
ipen.autorS. SITCH
ipen.autorB. POULTER
ipen.autorM. LOMAS
ipen.autorS. ZAEHLE
ipen.autorJ. LLOYD
ipen.autorJ. L. GUYOT
ipen.autorHUMBERTO RIBEIRO DA ROCHA
ipen.autorLUCIANA VANNI GATTI
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ipen.contributor.ipenauthorT. BAKER
ipen.contributor.ipenauthorY. MALHI
ipen.contributor.ipenauthorK. ZHAO
ipen.contributor.ipenauthorR. JACKSON
ipen.contributor.ipenauthorP. PEYLIN
ipen.contributor.ipenauthorS. SITCH
ipen.contributor.ipenauthorB. POULTER
ipen.contributor.ipenauthorM. LOMAS
ipen.contributor.ipenauthorS. ZAEHLE
ipen.contributor.ipenauthorJ. LLOYD
ipen.contributor.ipenauthorJ. L. GUYOT
ipen.contributor.ipenauthorHUMBERTO RIBEIRO DA ROCHA
ipen.contributor.ipenauthorLUCIANA VANNI GATTI
ipen.date.recebimento16-11pt_BR
ipen.identifier.fi3.754pt_BR
ipen.identifier.ipendoc22646pt_BR
ipen.identifier.iwosWoSpt_BR
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