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Biblioteca(s): |
Embrapa Agricultura Digital. |
Data corrente: |
14/01/2020 |
Data da última atualização: |
14/01/2020 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
ATTIA, A.; CUADRA, S. V.; NOUVELLON, Y.; GUILLEMOT, J.; CAMPOE, O. C.; CABRAL, O. M. R.; LACLAU, J. P.; GALDOS, M.; LAMPARELLI, R.; LE MAIRE, G. |
Afiliação: |
AHMED ATTIA, Unicamp; SANTIAGO VIANNA CUADRA, CNPTIA; YANN NOUVELLON, UMR EcoSols (Univ Montpellier, Cirad, Inra, IRD, Montpellier SupAgro) - CIRAD, ESALQ/USP; JOANNÈS GUILLEMOT, UMR EcoSols (Univ Montpellier, Cirad, Inra, IRD, Montpellier SupAgro) - CIRAD, ESALQ; OTÁVIO CAMARGO CAMPOE, UFSC, UNESP; OSVALDO MACHADO RODRIGUES CABRAL, CNPMA; JEAN-PAUL LACLAU, UMR EcoSols (Univ Montpellier, Cirad, Inra, IRD, Montpellier SupAgro) - CIRAD, ESALQ/USP, UNESP; MARCELO GALDOS, University of Leeds; RUBENS LAMPARELLI, Unicamp; GUERRIC LE MAIRE. |
Título: |
Modelling Eucalyptus biomass production at regional scale in Brazil. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
In: EUCALYPTUS, 2018, Montpellier. Managing Eucalyptus plantation under global changes: abstracts book. Montpellier: CIRAD, 2018. |
Páginas: |
p. 43. |
ISBN: |
978-2-87614-743-0 |
Idioma: |
Inglês |
Notas: |
Na publicação: Santiago Cuandra. |
Conteúdo: |
Among forest vegetation grown in Brazil, Eucalyptus is the most widely planted tropical hardwood genus covering approximately 5.7 million ha for an average yield of 49 m3 ha-1 yr-1. Wide differences of biomass production were observed among neighboring stands representing challenges to forestry companies to spatially estimate biomass yield in large plantation zones. The first objective of the present research was to modify the carbon allocation scheme in the process-based model Generic Decomposition And Yield Model (G'DAY), to better capture the spatial variability in growth rates of Eucalyptus as in uenced by environmental constraints such as water stress. The model was parametrized and tested using experimental and long term commercial datasets in the state of S~ao Paulo Brazil. Measured data included several variables of carbon and water uxes and carbon stock. The calibrated model produced accurate prediction of the carbon key variables such as leaf area index, stem biomass, and gross primary production and water related variables such as plant available water and evapotranspiration. Simulating the spatial variability among commercial Eucalyptus stands at landscape scale showed reasonable prediction of plant height with r2 of 0.89 but lower level of accuracy for stem biomass. This could partially be attributed to spatial soil data differences used at regional scales which came from the Global Soil Dataset for Earth Systems Modeling dataset, at a resolution of 1 km. Testing the soil data with the use of soil type map crossed with soil profile measurements is expected to improve the soil information for higher accuracy of stem simulation at landscape to regional scale. MenosAmong forest vegetation grown in Brazil, Eucalyptus is the most widely planted tropical hardwood genus covering approximately 5.7 million ha for an average yield of 49 m3 ha-1 yr-1. Wide differences of biomass production were observed among neighboring stands representing challenges to forestry companies to spatially estimate biomass yield in large plantation zones. The first objective of the present research was to modify the carbon allocation scheme in the process-based model Generic Decomposition And Yield Model (G'DAY), to better capture the spatial variability in growth rates of Eucalyptus as in uenced by environmental constraints such as water stress. The model was parametrized and tested using experimental and long term commercial datasets in the state of S~ao Paulo Brazil. Measured data included several variables of carbon and water uxes and carbon stock. The calibrated model produced accurate prediction of the carbon key variables such as leaf area index, stem biomass, and gross primary production and water related variables such as plant available water and evapotranspiration. Simulating the spatial variability among commercial Eucalyptus stands at landscape scale showed reasonable prediction of plant height with r2 of 0.89 but lower level of accuracy for stem biomass. This could partially be attributed to spatial soil data differences used at regional scales which came from the Global Soil Dataset for Earth Systems Modeling dataset, at a resolution of 1 km. Testin... Mostrar Tudo |
Palavras-Chave: |
Ecophysiological Modelling; G’DAY; Regional Scale. |
Thesagro: |
Biomassa; Eucalipto. |
Thesaurus Nal: |
Biomass; Brazil; Eucalyptus. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02717nam a2200349 a 4500 001 2118695 005 2020-01-14 008 2018 bl uuuu u01u1 u #d 020 $a978-2-87614-743-0 100 1 $aATTIA, A. 245 $aModelling Eucalyptus biomass production at regional scale in Brazil.$h[electronic resource] 260 $aIn: EUCALYPTUS, 2018, Montpellier. Managing Eucalyptus plantation under global changes: abstracts book. Montpellier: CIRAD$c2018 300 $ap. 43. 500 $aNa publicação: Santiago Cuandra. 520 $aAmong forest vegetation grown in Brazil, Eucalyptus is the most widely planted tropical hardwood genus covering approximately 5.7 million ha for an average yield of 49 m3 ha-1 yr-1. Wide differences of biomass production were observed among neighboring stands representing challenges to forestry companies to spatially estimate biomass yield in large plantation zones. The first objective of the present research was to modify the carbon allocation scheme in the process-based model Generic Decomposition And Yield Model (G'DAY), to better capture the spatial variability in growth rates of Eucalyptus as in uenced by environmental constraints such as water stress. The model was parametrized and tested using experimental and long term commercial datasets in the state of S~ao Paulo Brazil. Measured data included several variables of carbon and water uxes and carbon stock. The calibrated model produced accurate prediction of the carbon key variables such as leaf area index, stem biomass, and gross primary production and water related variables such as plant available water and evapotranspiration. Simulating the spatial variability among commercial Eucalyptus stands at landscape scale showed reasonable prediction of plant height with r2 of 0.89 but lower level of accuracy for stem biomass. This could partially be attributed to spatial soil data differences used at regional scales which came from the Global Soil Dataset for Earth Systems Modeling dataset, at a resolution of 1 km. Testing the soil data with the use of soil type map crossed with soil profile measurements is expected to improve the soil information for higher accuracy of stem simulation at landscape to regional scale. 650 $aBiomass 650 $aBrazil 650 $aEucalyptus 650 $aBiomassa 650 $aEucalipto 653 $aEcophysiological Modelling 653 $aG’DAY 653 $aRegional Scale 700 1 $aCUADRA, S. V. 700 1 $aNOUVELLON, Y. 700 1 $aGUILLEMOT, J. 700 1 $aCAMPOE, O. C. 700 1 $aCABRAL, O. M. R. 700 1 $aLACLAU, J. P. 700 1 $aGALDOS, M. 700 1 $aLAMPARELLI, R. 700 1 $aLE MAIRE, G.
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Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
Biblioteca(s): |
Embrapa Agricultura Digital. |
Data corrente: |
21/11/2012 |
Data da última atualização: |
08/01/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 2 |
Autoria: |
OSAWA, C. C.; SOUZA, E. F. de; CASTRO, A. de. |
Afiliação: |
CARLA CRISTIANE OSAWA, IQ/Unicamp, CNPTIA; ELIZABETH FÁTIMA DE SOUZA, PUC Campinas; ALEXANDRE DE CASTRO, CNPTIA. |
Título: |
Colloidal stability by adsorption of Ni2+ or Fe3+ cations on hairy latex particles. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Journal of Dispersion Science and Technology, v. 33, n. 2, p. 171-176, 2012. |
Idioma: |
Inglês |
Conteúdo: |
Polymer latexes have many industrial applications and are considered as models of colloids. The DLVO theory has been widely used to describe the colloidal stability. The adsorption of Ni2+ and Fe3+ cations on polyvinyl acetate latex particles in the presence of NO3À counterions, and the colloidal stability of the system were studied. The obtained results indicate that Ni2+ or Fe3+ cations were adsorbed on the latex particles' hairy layers, which also helped to prevent latex coagulation. The stability of the PVAc latex within highly concentrated ionic media shows a deviation from the behavior described by the classical DLVO theory. |
Palavras-Chave: |
Adsorção de cations; Isoterma de Langmuir. |
Thesagro: |
Latex. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 01203naa a2200181 a 4500 001 1940187 005 2020-01-08 008 2012 bl uuuu u00u1 u #d 100 1 $aOSAWA, C. C. 245 $aColloidal stability by adsorption of Ni2+ or Fe3+ cations on hairy latex particles.$h[electronic resource] 260 $c2012 520 $aPolymer latexes have many industrial applications and are considered as models of colloids. The DLVO theory has been widely used to describe the colloidal stability. The adsorption of Ni2+ and Fe3+ cations on polyvinyl acetate latex particles in the presence of NO3À counterions, and the colloidal stability of the system were studied. The obtained results indicate that Ni2+ or Fe3+ cations were adsorbed on the latex particles' hairy layers, which also helped to prevent latex coagulation. The stability of the PVAc latex within highly concentrated ionic media shows a deviation from the behavior described by the classical DLVO theory. 650 $aLatex 653 $aAdsorção de cations 653 $aIsoterma de Langmuir 700 1 $aSOUZA, E. F. de 700 1 $aCASTRO, A. de 773 $tJournal of Dispersion Science and Technology$gv. 33, n. 2, p. 171-176, 2012.
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