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Área de identificação
Tipo de ReferênciaJournal Article
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Última Atualização2014: administrator
Última Atualização dos Metadados2018: administrator
Chave de CitaçãoWagnerRosStaBonHer:2013:StCoSa
TítuloAsynchronism in leaf and wood production in tropical forests: a study combining satellite and ground-based measurements
ProjetoFapesp (13/14520-6)
Data de Acesso24 fev. 2021
Tipo de Trabalhojournal article
Número de Arquivos1
Tamanho292 KiB
Área de contextualização
Autor1 Wagner, F.
2 Rossi, V
3 Stahl, C.
4 Bonal, D.
5 Herault, B.
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 irad, Biens & Serv Ecosyst Forestiers Trop UR105, Montpellier, France; Univ Yaounde, Modelisat Math & Informat Syst Complexes UMI209, Yaounde, Cameroon
3 CIRAD, UMR Syst Elevage Milieux Mediterraneens & Trop, Kourou, French Guiana
4 INRA, UMR EEF 1137, F-54280 Champenoux, France
5 CIRAD, UMR Ecol Forets Guyane, Kourou, French Guiana
Endereço de e-Mail do Autor1
Endereço de
Tipo SecundárioPRE PI
Nota SecundáriaA1 A1 A1 A1 A1 A2 B1
Histórico2014-01-13 16:40:22 :: marciana -> administrator ::
2018-06-04 03:14:27 :: administrator -> :: 2013
Área de conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Tipo do ConteudoExternal Contribution
Tipo de Versãopublisher
Palavras-ChaveAmazon rain-forests, carbon-dioxide emissions, long-term growth, vegetation indexes, french-guiana, dry season, water availability, deciduous forest, climate-change, global change.
ResumoThe fixation of carbon in tropical forests mainly occurs through the production of wood and leaves, both being the principal components of net primary production. Currently field and satellite observations are independently used to describe the forest carbon cycle, but the link between satellite-derived forest phenology and field-derived forest productivity remains opaque. We used a unique combination of a MODIS enhanced vegetation index (EVI) dataset, a wood production model based on climate data and direct litterfall observations at an intra-annual timescale in order to question the synchronism of leaf and wood production in tropical forests. Even though leaf and wood biomass fluxes had the same range (respectively 2.4 +/- 1.4 and 2.2 +/- 0.4 Mg C ha(-1) yr(-1)), they occurred separately in time. EVI increased with leaf renewal at the beginning of the dry season, when solar irradiance was at its maximum. At this time, wood production stopped. At the onset of the rainy season, when new leaves were fully mature and water available again, wood production quickly increased to reach its maximum in less than a month, reflecting a change in carbon allocation from short-lived pools (leaves) to long-lived pools (wood). The time lag between peaks of EVI and wood production (109 days) revealed a substantial decoupling between the leaf renewal assumed to be driven by irradiance and the water-driven wood production. Our work is a first attempt to link EVI data, wood production and leaf phenology at a seasonal timescale in a tropical evergreen rainforest and pave the way to develop more sophisticated global carbon cycle models in tropical forests.
ArranjoRepositório da BDMCI > Fonds INPE > Produção > CGOBT > Asynchronism in leaf...
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Área de condições de acesso e uso
URL dos dados
URL dos dados zipados
Arquivo Alvobg-10-7307-2013.pdf
Grupo de Usuáriosmarciana
Grupo de Leitoresadministrator
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Permissão de Leituraallow from all
Permissão de Atualizaçãonão transferida
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Unidades Imediatamente Superiores8JMKD3MGPCW/3EU2H28
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Campos Vaziosalternatejournal archivist callnumber copyholder creatorhistory descriptionlevel format isbn label lineage mark month nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress resumeid rightsholder secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url