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| 3. |  | FERREIRA JUNIOR, M. J. A.; OLIVEIRA JUNIOR, R. C. de; SILVA, R. da; MOURA, J. M. de S. de; FURTADO NETO, A.; PONTE, M. X.; BELDINI, T. P. Assessing the impact of different tillage systems and land uses on CO2-C emissions in Eastern Amazonia. African Journal of Agricultural Research, v. 12, n. 30, p. 2427-2441, July 2017.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 4. | | CHERMONT, A. B.; CARVALHO, D. F.; CARVALHO, M. J. C.; CONTENTE, E. A.; MACHADO, P. F.; PONTE, M. X.; BRITO, W. dos S.; MONTEIRO, R. W. Programa de desenvolvimento de parques tecnológicos na Amazônia. Belém, PA: FADESP, 1992. v.2 49 p. Convênio de Cooperação Técnico-Científica (SUDAM/UFPA/FADESP).| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 5. | | CHERMONT, A. B.; CARVALHO, D. F.; CARVALHO, M. J. C.; CONTENTE, E. A.; MACHADO, P. F.; PONTE, M. X.; BRITO, W. dos S.; MONTEIRO, R. W. Parques tecnologicos: experiencia nacional e internacional e suas possibilidades de desenvolvimento na Amazonia - relatorio final. Belem: FADESP, 1992. v.1 Convenio de Cooperacao Tecnico-cientifica (SUDAM/UFPA/FADESP, 2. Termo Aditivo, Marco/91).| Biblioteca(s): Embrapa Amazônia Oriental. |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
29/08/2017 |
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Data da última atualização: |
22/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
FERREIRA JUNIOR, M. J. A.; OLIVEIRA JUNIOR, R. C. de; SILVA, R. da; MOURA, J. M. de S. de; FURTADO NETO, A.; PONTE, M. X.; BELDINI, T. P. |
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Afiliação: |
Miércio Jorge Alves Ferreira Junior, UFOPA; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; Rodrigo da Silva, UFOPA; José Mauro de Sousa de Moura, UFOPA; Alírio Furtado Neto, UFOPA; Marcos Ximenes Ponte, UFOPA; Troy Patrick Beldini, UFOPA. |
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Título: |
Assessing the impact of different tillage systems and land uses on CO2-C emissions in Eastern Amazonia. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
African Journal of Agricultural Research, v. 12, n. 30, p. 2427-2441, July 2017. |
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DOI: |
10.5897/AJAR2017.12218 |
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Idioma: |
Inglês |
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Conteúdo: |
The production and emission of CO2 in native, pasture and cultivated areas is a result of microbiological activity and mineralization of organic matter, and depends on favorable environmental factors, such as temperature, availability of water and of land use. The results of this work show that the no tillage system (NT) has the potential to mitigate 37.7% of C-CO2 efflux from cultivation of soy compared to conventional tillage (CT). The temperature of the soil accounted for 65% of the variability of the flux of CO2-C in CT. The variation of soil moisture explained 73 and 51% of the flux of CO2-C in CT and NT, respectively. These results indicate that soil moisture and soil temperature were controlling factors of CO2-C emissions from soil to atmosphere because these parameters directly affect soil microbial activity. The results also show that the active pasture had the highest outflows of soil CO2-C to the atmosphere in relation to forests and degraded pasture in Western Pará. Furthermore, it was shown that both the pastures and forests have seasonality in the fluw, which mainly related to precipitation patterns and water potential between soil and air. We observed a strong correlation between the efflux and soil moisture of both capoeira and in the pastures, as the soil temperature was a controlling factor of the active efflux only in the pasture. The average fluw of CO2-C obtained in pasture active was 218.9 mg C m-2 h-1 value of 40.7% higher than the primary forests and 155.5 mg C m-2 h-1. Finally, the results presented here suggest that the conventional tillage and pasture management are activities strongly associated to human enhance biogeochemical changes in the balance of carbon in these ecosystems, since the efflux of CO2-C is related to soil primary productivity of these ecosystems. MenosThe production and emission of CO2 in native, pasture and cultivated areas is a result of microbiological activity and mineralization of organic matter, and depends on favorable environmental factors, such as temperature, availability of water and of land use. The results of this work show that the no tillage system (NT) has the potential to mitigate 37.7% of C-CO2 efflux from cultivation of soy compared to conventional tillage (CT). The temperature of the soil accounted for 65% of the variability of the flux of CO2-C in CT. The variation of soil moisture explained 73 and 51% of the flux of CO2-C in CT and NT, respectively. These results indicate that soil moisture and soil temperature were controlling factors of CO2-C emissions from soil to atmosphere because these parameters directly affect soil microbial activity. The results also show that the active pasture had the highest outflows of soil CO2-C to the atmosphere in relation to forests and degraded pasture in Western Pará. Furthermore, it was shown that both the pastures and forests have seasonality in the fluw, which mainly related to precipitation patterns and water potential between soil and air. We observed a strong correlation between the efflux and soil moisture of both capoeira and in the pastures, as the soil temperature was a controlling factor of the active efflux only in the pasture. The average fluw of CO2-C obtained in pasture active was 218.9 mg C m-2 h-1 value of 40.7% higher than the primary forests and ... Mostrar Tudo |
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Palavras-Chave: |
Uso do solo. |
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Thesagro: |
Carbono; Efeito Estufa. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/163138/1/MIERCIO-2017.pdf
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Marc: |
LEADER 02594naa a2200241 a 4500
001 2074593
005 2021-12-22
008 2017 bl uuuu u00u1 u #d
024 7 $a10.5897/AJAR2017.12218$2DOI
100 1 $aFERREIRA JUNIOR, M. J. A.
245 $aAssessing the impact of different tillage systems and land uses on CO2-C emissions in Eastern Amazonia.$h[electronic resource]
260 $c2017
520 $aThe production and emission of CO2 in native, pasture and cultivated areas is a result of microbiological activity and mineralization of organic matter, and depends on favorable environmental factors, such as temperature, availability of water and of land use. The results of this work show that the no tillage system (NT) has the potential to mitigate 37.7% of C-CO2 efflux from cultivation of soy compared to conventional tillage (CT). The temperature of the soil accounted for 65% of the variability of the flux of CO2-C in CT. The variation of soil moisture explained 73 and 51% of the flux of CO2-C in CT and NT, respectively. These results indicate that soil moisture and soil temperature were controlling factors of CO2-C emissions from soil to atmosphere because these parameters directly affect soil microbial activity. The results also show that the active pasture had the highest outflows of soil CO2-C to the atmosphere in relation to forests and degraded pasture in Western Pará. Furthermore, it was shown that both the pastures and forests have seasonality in the fluw, which mainly related to precipitation patterns and water potential between soil and air. We observed a strong correlation between the efflux and soil moisture of both capoeira and in the pastures, as the soil temperature was a controlling factor of the active efflux only in the pasture. The average fluw of CO2-C obtained in pasture active was 218.9 mg C m-2 h-1 value of 40.7% higher than the primary forests and 155.5 mg C m-2 h-1. Finally, the results presented here suggest that the conventional tillage and pasture management are activities strongly associated to human enhance biogeochemical changes in the balance of carbon in these ecosystems, since the efflux of CO2-C is related to soil primary productivity of these ecosystems.
650 $aCarbono
650 $aEfeito Estufa
653 $aUso do solo
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aSILVA, R. da
700 1 $aMOURA, J. M. de S. de
700 1 $aFURTADO NETO, A.
700 1 $aPONTE, M. X.
700 1 $aBELDINI, T. P.
773 $tAfrican Journal of Agricultural Research$gv. 12, n. 30, p. 2427-2441, July 2017.
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