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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
27/02/2014 |
Data da última atualização: |
30/10/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
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. |
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. |
Título: |
Fluxes of CO2 above a sugarcane plantation in Brazil. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Agricultural and Forest Meteorology, Amsterdam, v. 182-183, p. 54-66, 2013. |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
CO2 fluxes; Respiration; Soil water deficits. |
Thesaurus Nal: |
biomass; eddy covariance; sugarcane. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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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Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
10/06/2015 |
Data da última atualização: |
10/06/2015 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
AHRENS, S.; AHRENS, C. |
Afiliação: |
SERGIO AHRENS, CNPF; CAROLINE AHRENS, Curso e Colégio Acesso. |
Título: |
Sistemas agroflorestais e a recomposição da Reserva Legal de imóveis rurais no Brasil. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: CONGRESO NACIONAL DE SISTEMAS SILVOPASTORILES, 3.; CONGRESO INTERNACIONAL SISTEMAS AGROFORESTALES, 8., 2015, Iguazú, Missiones. Congreso... Santa Cruz: Ediciones INTA, 2015. p. 399-402. |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Código Florestal; Módulo fiscal; Reserva Legal. |
Thesagro: |
Legislação Florestal. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00675nam a2200169 a 4500 001 2017251 005 2015-06-10 008 2015 bl uuuu u00u1 u #d 100 1 $aAHRENS, S. 245 $aSistemas agroflorestais e a recomposição da Reserva Legal de imóveis rurais no Brasil.$h[electronic resource] 260 $aIn: CONGRESO NACIONAL DE SISTEMAS SILVOPASTORILES, 3.; CONGRESO INTERNACIONAL SISTEMAS AGROFORESTALES, 8., 2015, Iguazú, Missiones. Congreso... Santa Cruz: Ediciones INTA, 2015. p. 399-402.$c2015 650 $aLegislação Florestal 653 $aBrasil 653 $aCódigo Florestal 653 $aMódulo fiscal 653 $aReserva Legal 700 1 $aAHRENS, C.
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