Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1053980
Unidade da Embrapa/Coleção:: Embrapa Semiárido - Artigo em periódico indexado (ALICE)
Data do documento: 3-Out-2016
Tipo do Material: Artigo em periódico indexado (ALICE)
Autoria: REZENDE, L. F. C.
ARENQUE, B. C.
AIDAR, S. de T.
MOURA, M. S. B. de
RANDOW, C. V.
TOURIGNY, E.
MENEZES, R. S. C.
OMETTO, J. P. H. B.
Informaçães Adicionais: L. F. C. REZENDE, INPE; B. C. ARENQUE, USP; SAULO DE TARSO AIDAR, CPATSA; MAGNA SOELMA BESERRA DE MOURA, CPATSA; C. VON RANDOW, INPE; E. TOURIGNY, INPE; R. S. C. MENEZES, UFPE; J. P. H. B. OMETTO, INPE.
Título: Evolution and challenges of dynamic global vegetation models for some aspects of plant physiology and elevated atmospheric CO2.
Edição: 2016
Fonte/Imprenta: International Journal of Biometeorology, v. 60, p. 945-955, 2016.
Idioma: en
Palavras-chave: DGVMs
Mudanças Climáticas
Global changes
Maximumvelocity of carboxylation.
Conteúdo: Dynamic global vegetation models (DGVMs) simulate surface processes such as the transfer of energy, water, CO2, and momentum between the terrestrial surface and the atmosphere, biogeochemical cycles, carbon assimilation by vegetation, phenology, and land use change in scenarios of varying atmospheric CO2 concentrations. DGVMs increase the complexity and the Earth system representation when they are coupled with atmospheric global circulation models (AGCMs) or climate models. However, plant physiological processes are still a major source of uncertainty in DGVMs. The maximum velocity of carboxylation (Vcmax), for example, has a direct impact over productivity in the models. This parameter is often underestimated or imprecisely defined for the various plant functional types (PFTs) and ecosystems. Vcmax is directly related to photosynthesis acclimation (loss of response to elevated CO2), a widely known phenomenon that usually occurs when plants are subjected to elevated atmospheric CO2 and might affect productivity estimation in DGVMs. Despite this, current models have improved substantially, compared to earlier models which had a rudimentary and very simple representation of vegetation?atmosphere interactions. In this paper, we describe this evolution through generations of models and the main events that contributed to their improvements until the current state-of-the-art class of models. Also, we describe some main challenges for further improvements to DGVMs.
Thesagro: Vegetação.
NAL Thesaurus: Acclimation.
Ano de Publicação: 2016
Aparece nas coleções:Artigo em periódico indexado (CPATSA)

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