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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
04/09/2017 |
Data da última atualização: |
22/12/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
STAHL, C.; FONTAINE, S.; KLUMPP, K.; PICON-COCHARD, C.; GRISE, M. M.; DEZÉCACHE, C.; PONCHANT, l.; FREYCON, V.; BLANC, L.; BONAL, D.; BURBAN, B.; SOUSSANA, J.-F.; BLANFORT, V. |
Afiliação: |
CLÉMENT STAHL, CIRAD / University of Antwer / INRA; SÉBASTIEN FONTAINE, INRA; KATJA KLUMPP, INRA; CATHERINE PICON-COCHARD, INRA; MARCIA MASCARENHAS GRISE, CPATU; CAMILLE DEZÉCACHE, CIRAD; LISE PONCHANT, CIRAD; VINCENT FREYCON, CIRAD; LILIAN BLANC, CIRAD; DAMIEN BONAL, INRA; BENOIT BURBAN, INRA; JEAN-FRANÇOIS SOUSSANA, INRA; VINCENT BLANFORT, CIRAD. |
Título: |
Continuous soil carbon storage of old permanent pastures in Amazonia. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Global Change Biology, v. 23, n. 8, p. 3382-3392, Aug. 2017. |
DOI: |
10.1111/gcb.13573 |
Idioma: |
Inglês |
Conteúdo: |
Amazonian forests continuously accumulate carbon (C) in biomass and in soil, representing a carbon sink of 0.42?0.65 GtC yr−1. In recent decades, more than 15% of Amazonian forests have been converted into pastures, resulting in net C emissions (~200 tC ha−1) due to biomass burning and litter mineralization in the first years after deforestation. However, little is known about the capacity of tropical pastures to restore a C sink. Our study shows in French Amazonia that the C storage observed in native forest can be partly restored in old (≥24 year) tropical pastures managed with a low stocking rate (±1 LSU ha−1) and without the use of fire since their establishment. A unique combination of a large chronosequence study and eddy covariance measurements showed that pastures stored between −1.27 ± 0.37 and −5.31 ± 2.08 tC ha−1 yr−1 while the nearby native forest stored −3.31 ± 0.44 tC ha−1 yr−1. This carbon is mainly sequestered in the humus of deep soil layers (20?100 cm), whereas no C storage was observed in the 0- to 20-cm layer. C storage in C4 tropical pasture is associated with the installation and development of C3 species, which increase either the input of N to the ecosystem or the C:N ratio of soil organic matter. Efforts to curb deforestation remain an obvious priority to preserve forest C stocks and biodiversity. However, our results show that if sustainable management is applied in tropical pastures coming from deforestation (avoiding fires and overgrazing, using a grazing rotation plan and a mixture of C3 and C4 species), they can ensure a continuous C storage, thereby adding to the current C sink of Amazonian forests. MenosAmazonian forests continuously accumulate carbon (C) in biomass and in soil, representing a carbon sink of 0.42?0.65 GtC yr−1. In recent decades, more than 15% of Amazonian forests have been converted into pastures, resulting in net C emissions (~200 tC ha−1) due to biomass burning and litter mineralization in the first years after deforestation. However, little is known about the capacity of tropical pastures to restore a C sink. Our study shows in French Amazonia that the C storage observed in native forest can be partly restored in old (≥24 year) tropical pastures managed with a low stocking rate (±1 LSU ha−1) and without the use of fire since their establishment. A unique combination of a large chronosequence study and eddy covariance measurements showed that pastures stored between −1.27 ± 0.37 and −5.31 ± 2.08 tC ha−1 yr−1 while the nearby native forest stored −3.31 ± 0.44 tC ha−1 yr−1. This carbon is mainly sequestered in the humus of deep soil layers (20?100 cm), whereas no C storage was observed in the 0- to 20-cm layer. C storage in C4 tropical pasture is associated with the installation and development of C3 species, which increase either the input of N to the ecosystem or the C:N ratio of soil organic matter. Efforts to curb deforestation remain an obvious priority to preserve forest C stocks and biodiversity. However, our results show that if sustainable management is applied in tropical pastures ... Mostrar Tudo |
Palavras-Chave: |
Armazenamento de carbono; Solo profundo. |
Thesagro: |
Floresta Nativa; Pastagem; Pastagem Mista. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02644naa a2200337 a 4500 001 2074984 005 2021-12-22 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1111/gcb.13573$2DOI 100 1 $aSTAHL, C. 245 $aContinuous soil carbon storage of old permanent pastures in Amazonia.$h[electronic resource] 260 $c2017 520 $aAmazonian forests continuously accumulate carbon (C) in biomass and in soil, representing a carbon sink of 0.42?0.65 GtC yr−1. In recent decades, more than 15% of Amazonian forests have been converted into pastures, resulting in net C emissions (~200 tC ha−1) due to biomass burning and litter mineralization in the first years after deforestation. However, little is known about the capacity of tropical pastures to restore a C sink. Our study shows in French Amazonia that the C storage observed in native forest can be partly restored in old (≥24 year) tropical pastures managed with a low stocking rate (±1 LSU ha−1) and without the use of fire since their establishment. A unique combination of a large chronosequence study and eddy covariance measurements showed that pastures stored between −1.27 ± 0.37 and −5.31 ± 2.08 tC ha−1 yr−1 while the nearby native forest stored −3.31 ± 0.44 tC ha−1 yr−1. This carbon is mainly sequestered in the humus of deep soil layers (20?100 cm), whereas no C storage was observed in the 0- to 20-cm layer. C storage in C4 tropical pasture is associated with the installation and development of C3 species, which increase either the input of N to the ecosystem or the C:N ratio of soil organic matter. Efforts to curb deforestation remain an obvious priority to preserve forest C stocks and biodiversity. However, our results show that if sustainable management is applied in tropical pastures coming from deforestation (avoiding fires and overgrazing, using a grazing rotation plan and a mixture of C3 and C4 species), they can ensure a continuous C storage, thereby adding to the current C sink of Amazonian forests. 650 $aFloresta Nativa 650 $aPastagem 650 $aPastagem Mista 653 $aArmazenamento de carbono 653 $aSolo profundo 700 1 $aFONTAINE, S. 700 1 $aKLUMPP, K. 700 1 $aPICON-COCHARD, C. 700 1 $aGRISE, M. M. 700 1 $aDEZÉCACHE, C. 700 1 $aPONCHANT, l. 700 1 $aFREYCON, V. 700 1 $aBLANC, L. 700 1 $aBONAL, D. 700 1 $aBURBAN, B. 700 1 $aSOUSSANA, J.-F. 700 1 $aBLANFORT, V. 773 $tGlobal Change Biology$gv. 23, n. 8, p. 3382-3392, Aug. 2017.
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3. | | NASCIMENTO, M. A.; DA SILVA, L. C.; FURTADO, R. F.; OLIVEIRA, M. A.; MENDES, L. G.; ALVES, C. R. Uso de goma de cajueiro e gelatina para a formação de microcápsulas de óleo de pequi por coacervação complexa. In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 25., 2016, Gramado. Anais... Gramado: sbCTA-RS, 2016.Tipo: Artigo em Anais de Congresso |
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8. | | SILVA, T. M. e; COSTA, R. S. C. da; SILVA, L. C. da; MENONCIN, I. A.; SILVA, G. R. da; FIGUEIREDO, M. C. Produtividade do milho após o cultivo com plantas de cobertura em Porto Velho, RO. In: ENCONTRO DE INICIAÇÃO À PESQUISA DA EMBRAPA RONDÔNIA, 10.; ENCONTRO DE PÓS-GRADUAÇÃO DA EMBRAPA RONDÔNIA, 5., 2019, Porto Velho, RO. Anais... Porto Velho, RO: Embrapa Rondônia, 2019. p. 49.Tipo: Resumo em Anais de Congresso |
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9. | | RODRIGUES, S. M. C.; VIEIRA, M. V.; NEGRI FILHO, L. C.; VERONEZ, J. V.; SILVA, D. A. da; SILVA, L. C. da; ROMANELLI, P. R.; MINHO, A. P.; NAVARRO, I. T.; OKANO, W. Seroprevalence of infection lentivirus in sheep and goats in the states of Paraná and Rio Grande do Sul, Brazil. In: CONGRESSO BRASILEIRO DE VIROLOGIA, 28.; ENCONTRO DE VIROLOGIA DO MERCOSUL, 12., 2017, Belo Horizonte. Trabalhos... São José do Rio Preto: SBV, 2017.Tipo: Resumo em Anais de Congresso |
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10. | | BELTRAO, N. E. de M.; BEZERRA, J. R. C.; BARRETO, A. N.; LIMA, E. F.; OLIVEIRA, F. de A.; RAMALHO, F. de S.; SANTANA, J. C. F. de; COSTA, J. N.; MEDEIROS, J. da C.; BEZERRA, J. E. S.; CARVALHO, J. M. F. C.; NÓBREGA, L. B. da; SILVA, L. C.; CARVALHO, L. P. de; AMORIM NETO, M. da S.; LUZ, M. J. da S. E.; SILVA, O. R. R. F. da; BRAGA SOBRINHO, R.; ALMEIDA, R. P. de; CAMPOS, T. G. da S. Recomendações técnicas para cultivo do algodoeiro herbáceo de sequeiro e irrigado nas regiões Nordeste e Norte do Brasil. Campina Grande: EMBRAPA-CNPA, 1994. 73p. (EMBRAPA-CNPA. Circular Tecnica, 17)Biblioteca(s): Embrapa Algodão. |
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