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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
27/02/2014 |
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Data da última atualização: |
30/10/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CABRAL, O. M. R.; ROCHA, H. R. da; GASH, J. H.; LIGO, M. A. V.; RAMOS, N. P.; PACKER, A. P.; BATISTA, E. R. |
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Afiliação: |
OSVALDO MACHADO RODRIGUES CABRAL, CNPMA; HUMBERTO RIBEIRO DA ROCHA, IAG-USP; JOHN H GASH, Centre for Ecology and Hydrology; MARCOS ANTONIO VIEIRA LIGO, CNPMA; NILZA PATRICIA RAMOS, CNPMA; ANA PAULA CONTADOR PACKER, CNPMA; EUNICE REIS BATISTA, CNPMA. |
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Título: |
Fluxes of CO2 above a sugarcane plantation in Brazil. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Agricultural and Forest Meteorology, Amsterdam, v. 182-183, p. 54-66, 2013. |
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Idioma: |
Inglês |
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Conteúdo: |
Fluxes of CO2 were measured above a sugarcane plantation using the eddy-covariance method covering two growth cycles, representing the second and third re-growth (ratoons) harvested with stubble burning. The total net ecosystem exchange (NEE) in the first cycle (second ratoon, 393 days long) was ?1964 ± 44 g C m?2; the gross ecosystem productivity (GEP) was 3612 ± 46 g C m?2 and the ecosystem respiration (RE) was 1648 ± 14 g C m?2. The NEE and GEP totals in the second cycle (third ratoon, 374 days long) decreased 51% and 25%, respectively and RE increased 7%. Accounting for the carbon emitted during biomass burning and the removal of stalks at harvest, net ecosystem carbon balance (NECB) totals were 102 ± 130 g C m?2 and 403 ± 84 g C m?2 in each cycle respectively. Thus the sugarcane agrosystem was approximately carbon neutral in the second ratoon. Yield in stalks fresh weight (SFW) attained the regional average (8.3 kg SFW m?2). Although it was a carbon source to the atmosphere, observed productivity (6.2 kg SFW m?2) of the third ratoon was 19% lower than the regional average due to the lower water availability observed during the initial 120 days of re-growth. However, the overall water use efficiency (WUE) achieved in the first cycle (4.3 g C kg?1 H2O) decreased only 5% in the second cycle. |
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Palavras-Chave: |
CO2 fluxes; Respiration; Soil water deficits. |
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Thesaurus Nal: |
biomass; eddy covariance; sugarcane. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02051naa a2200265 a 4500
001 1981472
005 2019-10-30
008 2013 bl uuuu u00u1 u #d
100 1 $aCABRAL, O. M. R.
245 $aFluxes of CO2 above a sugarcane plantation in Brazil.$h[electronic resource]
260 $c2013
520 $aFluxes of CO2 were measured above a sugarcane plantation using the eddy-covariance method covering two growth cycles, representing the second and third re-growth (ratoons) harvested with stubble burning. The total net ecosystem exchange (NEE) in the first cycle (second ratoon, 393 days long) was ?1964 ± 44 g C m?2; the gross ecosystem productivity (GEP) was 3612 ± 46 g C m?2 and the ecosystem respiration (RE) was 1648 ± 14 g C m?2. The NEE and GEP totals in the second cycle (third ratoon, 374 days long) decreased 51% and 25%, respectively and RE increased 7%. Accounting for the carbon emitted during biomass burning and the removal of stalks at harvest, net ecosystem carbon balance (NECB) totals were 102 ± 130 g C m?2 and 403 ± 84 g C m?2 in each cycle respectively. Thus the sugarcane agrosystem was approximately carbon neutral in the second ratoon. Yield in stalks fresh weight (SFW) attained the regional average (8.3 kg SFW m?2). Although it was a carbon source to the atmosphere, observed productivity (6.2 kg SFW m?2) of the third ratoon was 19% lower than the regional average due to the lower water availability observed during the initial 120 days of re-growth. However, the overall water use efficiency (WUE) achieved in the first cycle (4.3 g C kg?1 H2O) decreased only 5% in the second cycle.
650 $abiomass
650 $aeddy covariance
650 $asugarcane
653 $aCO2 fluxes
653 $aRespiration
653 $aSoil water deficits
700 1 $aROCHA, H. R. da
700 1 $aGASH, J. H.
700 1 $aLIGO, M. A. V.
700 1 $aRAMOS, N. P.
700 1 $aPACKER, A. P.
700 1 $aBATISTA, E. R.
773 $tAgricultural and Forest Meteorology, Amsterdam$gv. 182-183, p. 54-66, 2013.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Biblioteca |
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Origem |
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Cutter |
Registro |
Volume |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
09/02/2009 |
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Data da última atualização: |
02/04/2009 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
COURI, S.; XAVIER, A.; COSTA, S. da. |
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Afiliação: |
Sonia Couri, CTAA; Antonio Xavier de Farias, CTAA; Selma da Costa Terzi, CTAA. |
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Título: |
Cellulosic ethanol: hydrolytic enzymes produced by wild Aspergillus niger 12 and mutant Aspergillus niger 3T5B8 from tropical environmental. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: SYMPOSIUM ON BIOTECHNOLOGY FOR FUELS AND CHEMICALS, 30., 2008, New Orleans, LA. Posters. Fairfax, VA: Society for Industrial Microbiology, 2008. p. 146. Poster 12-08. |
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Idioma: |
Inglês |
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Palavras-Chave: |
Aspergillus niger 12; Aspergillus niger 3T5B8; Enzima hidrolítica; Etanol celulósico. |
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Categoria do assunto: |
-- |
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URL: |
https://www.simhq.org/meetings/30symp/30SympProgramAbstracts.pdf
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Marc: |
LEADER 00717naa a2200181 a 4500
001 1416903
005 2009-04-02
008 2008 bl --- 0-- u #d
100 1 $aCOURI, S.
245 $aCellulosic ethanol$bhydrolytic enzymes produced by wild Aspergillus niger 12 and mutant Aspergillus niger 3T5B8 from tropical environmental.
260 $c2008
653 $aAspergillus niger 12
653 $aAspergillus niger 3T5B8
653 $aEnzima hidrolítica
653 $aEtanol celulósico
700 1 $aXAVIER, A.
700 1 $aCOSTA, S. da
773 $tIn: SYMPOSIUM ON BIOTECHNOLOGY FOR FUELS AND CHEMICALS, 30., 2008, New Orleans, LA. Posters. Fairfax, VA: Society for Industrial Microbiology, 2008. p. 146. Poster 12-08.
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Embrapa Agroindústria de Alimentos (CTAA) |
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