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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 |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
31/01/2012 |
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Data da última atualização: |
16/06/2017 |
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Tipo da produção científica: |
Folder/Folheto/Cartilha |
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Autoria: |
SOUSA, F. B. de. |
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Afiliação: |
FRANCISCO BENI DE SOUSA, CNPC. |
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Título: |
Leucena: alternativa forrageira de alta qualidade para caprinos e ovinos. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Sobral: Embrapa Caprinos, 2001. |
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Páginas: |
Não paginado. |
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Descrição Física: |
1 Folder. |
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Idioma: |
Português |
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Palavras-Chave: |
Leunena. |
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Thesagro: |
Alimento alternativo; Alimento para animal; Caprino; Leucaena leucocephala; Ovino. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/53179/1/Folder-Leucena.pf.pdf
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Marc: |
LEADER 00538nam a2200181 a 4500
001 1913925
005 2017-06-16
008 2001 bl uuuu u0uu1 u #d
100 1 $aSOUSA, F. B. de
245 $aLeucena$balternativa forrageira de alta qualidade para caprinos e ovinos.$h[electronic resource]
260 $aSobral: Embrapa Caprinos$c2001
300 $aNão paginado.$c1 Folder.
650 $aAlimento alternativo
650 $aAlimento para animal
650 $aCaprino
650 $aLeucaena leucocephala
650 $aOvino
653 $aLeunena
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
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