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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Roraima. |
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Data corrente: |
17/11/2020 |
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Data da última atualização: |
17/11/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, C. V. J.; ARAGÃO, L. E. O. C.; YOUNG, P. J.; ESPIRITO-SANTO, F.; BERENGUER, E.; ANDERSON, L. O.; BRASIL, I.; PONTES-LOPES, A.; FERREIRA, J. N.; WITHEY, K.; FRANÇA, F.; GRAÇA, P. M. L. A.; KIRSTEN, L.; XAUD, H. A. M.; SALIMON, C.; SCARANELLO, M. A.; CASTRO, B.; SEIXAS, M.; FARIAS, R.; BARLOW, J. |
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Afiliação: |
Camila V. J. Silva, Lancaster University; Luiz E. O. C. Aragão, INPE / University of Exeter; Paul J. Young, Lancaster University; Fernando Espirito-Santo, University of Leicester; Erika Berenguer, Lancaster University / University of Oxford; Liana O. Anderson, CEMADEN; Izaias Brasil, UEMA; Aline Pontes-Lopes, INPE; JOICE NUNES FERREIRA, CPATU; Kieran Withey, Lancaster University; Filipe França, Lancaster University; Paulo M. L. A. Graça, INPA; Leticia Kirsten, INPA; HARON ABRAHIM MAGALHAES XAUD, CPAF-RR; Cleber Salimon, Universidade Estadual da Paraíba; Marcos A. Scaranello, COLABORADOR CNPTIA; Bruno Castro, IMAFLORA; Marina Seixas, COLABORADORA CPATU; Renato Farias, Instituto Centro de Vida; Jos Barlow, Lancaster University / UFLA. |
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Título: |
Estimating the multi-decadal carbon deficit of burned Amazonian forests. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Environmental Research Letters, v. 15, Article 114023, 2020. |
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DOI: |
https://doi.org/10.1088/1748-9326/abb62c |
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Idioma: |
Inglês |
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Conteúdo: |
Wildfires in humid tropical forests have become more common in recent years, increasing the rates of tree mortality in forests that have not co-evolved with fire. Estimating carbon emissions from these wildfires is complex. Current approaches rely on estimates of committed emissions based on static emission factors through time and space, yet these emissions cannot be assigned to specific years, and thus are not comparable with other temporally-explicit emission sources. Moreover, committed emissions are gross estimates, whereas the long-term consequences of wildfires require an understanding of net emissions that accounts for post-fire uptake of CO2. Here, using a 30 year wildfire chronosequence from across the Brazilian Amazon, we calculate net CO2 emissions from Amazon wildfires by developing statistical models comparing post-fire changes in stem mortality, necromass decomposition and vegetation growth with unburned forest plots sampled at the same time. Over the 30 yr time period, gross emissions from combustion during the fire and subsequent tree mortality and decomposition were equivalent to 126.1 Mg CO2 ha−1 of which 73% (92.4 Mg CO2 ha−1) resulted from mortality and decomposition. These emissions were only partially offset by forest growth, with an estimated CO2 uptake of 45.0 Mg ha−1over the same time period. Our analysis allowed us to assign emissions and growth across years, revealing that net annual emissions peak 4 yr after forest fires. At present, Brazil's National Determined Contribution (NDC) for emissions fails to consider forest fires as a significant source, even though these are likely to make a substantial and long-term impact on the net carbon balance of Amazonia. Considering long-term post-fire necromass decomposition and vegetation regrowth is crucial for improving global carbon budget estimates and national greenhouse gases (GHG) inventories for tropical forest countries. MenosWildfires in humid tropical forests have become more common in recent years, increasing the rates of tree mortality in forests that have not co-evolved with fire. Estimating carbon emissions from these wildfires is complex. Current approaches rely on estimates of committed emissions based on static emission factors through time and space, yet these emissions cannot be assigned to specific years, and thus are not comparable with other temporally-explicit emission sources. Moreover, committed emissions are gross estimates, whereas the long-term consequences of wildfires require an understanding of net emissions that accounts for post-fire uptake of CO2. Here, using a 30 year wildfire chronosequence from across the Brazilian Amazon, we calculate net CO2 emissions from Amazon wildfires by developing statistical models comparing post-fire changes in stem mortality, necromass decomposition and vegetation growth with unburned forest plots sampled at the same time. Over the 30 yr time period, gross emissions from combustion during the fire and subsequent tree mortality and decomposition were equivalent to 126.1 Mg CO2 ha−1 of which 73% (92.4 Mg CO2 ha−1) resulted from mortality and decomposition. These emissions were only partially offset by forest growth, with an estimated CO2 uptake of 45.0 Mg ha−1over the same time period. Our analysis allowed us to assign emissions and growth across years, revealing that net annual emissions peak 4 yr after forest fires. At pre... Mostrar Tudo |
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Thesagro: |
Absorção; Caule; Combustão; Floresta Tropical; Incêndio Florestal; Mortalidade. |
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Thesaurus Nal: |
Combustion; Tropical forests; Wildfires. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/217856/1/Silva-2020-Environ.-Res.-Lett.-15-114023.pdf
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Marc: |
LEADER 03226naa a2200469 a 4500
001 2126660
005 2020-11-17
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1088/1748-9326/abb62c$2DOI
100 1 $aSILVA, C. V. J.
245 $aEstimating the multi-decadal carbon deficit of burned Amazonian forests.$h[electronic resource]
260 $c2020
520 $aWildfires in humid tropical forests have become more common in recent years, increasing the rates of tree mortality in forests that have not co-evolved with fire. Estimating carbon emissions from these wildfires is complex. Current approaches rely on estimates of committed emissions based on static emission factors through time and space, yet these emissions cannot be assigned to specific years, and thus are not comparable with other temporally-explicit emission sources. Moreover, committed emissions are gross estimates, whereas the long-term consequences of wildfires require an understanding of net emissions that accounts for post-fire uptake of CO2. Here, using a 30 year wildfire chronosequence from across the Brazilian Amazon, we calculate net CO2 emissions from Amazon wildfires by developing statistical models comparing post-fire changes in stem mortality, necromass decomposition and vegetation growth with unburned forest plots sampled at the same time. Over the 30 yr time period, gross emissions from combustion during the fire and subsequent tree mortality and decomposition were equivalent to 126.1 Mg CO2 ha−1 of which 73% (92.4 Mg CO2 ha−1) resulted from mortality and decomposition. These emissions were only partially offset by forest growth, with an estimated CO2 uptake of 45.0 Mg ha−1over the same time period. Our analysis allowed us to assign emissions and growth across years, revealing that net annual emissions peak 4 yr after forest fires. At present, Brazil's National Determined Contribution (NDC) for emissions fails to consider forest fires as a significant source, even though these are likely to make a substantial and long-term impact on the net carbon balance of Amazonia. Considering long-term post-fire necromass decomposition and vegetation regrowth is crucial for improving global carbon budget estimates and national greenhouse gases (GHG) inventories for tropical forest countries.
650 $aCombustion
650 $aTropical forests
650 $aWildfires
650 $aAbsorção
650 $aCaule
650 $aCombustão
650 $aFloresta Tropical
650 $aIncêndio Florestal
650 $aMortalidade
700 1 $aARAGÃO, L. E. O. C.
700 1 $aYOUNG, P. J.
700 1 $aESPIRITO-SANTO, F.
700 1 $aBERENGUER, E.
700 1 $aANDERSON, L. O.
700 1 $aBRASIL, I.
700 1 $aPONTES-LOPES, A.
700 1 $aFERREIRA, J. N.
700 1 $aWITHEY, K.
700 1 $aFRANÇA, F.
700 1 $aGRAÇA, P. M. L. A.
700 1 $aKIRSTEN, L.
700 1 $aXAUD, H. A. M.
700 1 $aSALIMON, C.
700 1 $aSCARANELLO, M. A.
700 1 $aCASTRO, B.
700 1 $aSEIXAS, M.
700 1 $aFARIAS, R.
700 1 $aBARLOW, J.
773 $tEnvironmental Research Letters$gv. 15, Article 114023, 2020.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Arroz e Feijão. |
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Data corrente: |
16/02/2009 |
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Data da última atualização: |
18/11/2013 |
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Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
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Autoria: |
RUMJANEK, N. G.; ZILLI, J. E.; RANGEL, F. W.; PASSOS, S. R.; MARTINS, C. M.; FERREIRA, E. P. de B.; ABOIM, M. C. R.; VINCENTIN, R.; GUERRA, J. G. M.; XAVIER, G. R. |
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Afiliação: |
Norma Gouvea Rumjanek, Embrapa Agrobiologia; José Guilherme Marinho Guerra, Embrapa Agrobiologia; Gustavo Ribeiro Xavier, Embrapa Agrobiologia. |
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Título: |
Uso do Meio Solo e PCR/DGGE como estratégia para caracterização da comunidade bacteriana. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Seropédica: Embrapa Agrobiologia, 2008. |
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Páginas: |
27p. |
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Série: |
(Embrapa Agrobiologia. Boletim de Pesquisa e Desenvolvimento, 31). |
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Idioma: |
Português |
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Conteúdo: |
O presente trabalho teve como objetivo apresentar uma nova estratégia metodológica utilizando solo como fonte de nutrientes para o cultivo microbiano e posterior caracterização do perfil da comunidade com a ferramenta molecular de PCR-DGGE. |
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Palavras-Chave: |
Comunidade bacteriana; Ecologia microbiana; Eletroforese em gel de gradiente desnaturante. |
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Thesagro: |
Análise do Solo; Eletroforese; Solo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPAB-2010/35701/1/bot031.pdf
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Marc: |
LEADER 01186nam a2200313 a 4500
001 1630373
005 2013-11-18
008 2008 bl uuuu u0uu1 u #d
100 1 $aRUMJANEK, N. G.
245 $aUso do Meio Solo e PCR/DGGE como estratégia para caracterização da comunidade bacteriana.
260 $aSeropédica: Embrapa Agrobiologia$c2008
300 $a27p.
490 $a(Embrapa Agrobiologia. Boletim de Pesquisa e Desenvolvimento, 31).
520 $aO presente trabalho teve como objetivo apresentar uma nova estratégia metodológica utilizando solo como fonte de nutrientes para o cultivo microbiano e posterior caracterização do perfil da comunidade com a ferramenta molecular de PCR-DGGE.
650 $aAnálise do Solo
650 $aEletroforese
650 $aSolo
653 $aComunidade bacteriana
653 $aEcologia microbiana
653 $aEletroforese em gel de gradiente desnaturante
700 1 $aZILLI, J. E.
700 1 $aRANGEL, F. W.
700 1 $aPASSOS, S. R.
700 1 $aMARTINS, C. M.
700 1 $aFERREIRA, E. P. de B.
700 1 $aABOIM, M. C. R.
700 1 $aVINCENTIN, R.
700 1 $aGUERRA, J. G. M.
700 1 $aXAVIER, G. R.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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