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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
17/11/2020 |
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Data da última atualização: |
11/01/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SMITH, C. C.; ESPÍRITO-SANTO, F. D. B.; HEALEY, J. R.; YOUNG, P. J.; LENNOX, G. D.; FERREIRA, J. N.; BARLOW, J. |
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Afiliação: |
Charlotte C. Smith, Lancaster University; Fernando D. B. Espírito-Santo, University of Leicester; John R. Healey, Bangor University; Paul J. Young, Lancaster University; Gareth D. Lennox, Lancaster University; JOICE NUNES FERREIRA, CPATU; Jos Barlow, Lancaster University / UFLA. |
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Título: |
Secondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Global Change Biology, v. 26, n. 12, p. 7006-7020, 2020. |
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DOI: |
10.1111/gcb.15352 |
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Idioma: |
Inglês |
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Conteúdo: |
Secondary forests are increasing in the Brazilian Amazon and have been cited as an important mechanism for reducing net carbon emissions. However, our under-standing of the contribution of secondary forests to the Amazonian carbon balance is incomplete, and it is unclear to what extent emissions from old-growth deforesta-tion have been offset by secondary forest growth. Using MapBiomas 3.1 and re-cently refined IPCC carbon sequestration estimates, we mapped the age and extent of secondary forests in the Brazilian Amazon and estimated their role in offsetting old-growth deforestation emissions since 1985. We also assessed whether second-ary forests in the Brazilian Amazon are growing in conditions favourable for carbon accumulation in relation to a suite of climatic, landscape and local factors. In 2017, the 129,361 km2 of secondary forest in the Brazilian Amazon stored 0.33± 0.05 bil-lion Mg of above-ground carbon but had offset just 9.37% of old-growth emissions since 1985. However, we find that the majority of Brazilian secondary forests are situated in contexts that are less favourable for carbon accumulation than the biome average. Our results demonstrate that old-growth forest loss remains the most impor-tant factor determining the carbon balance in the Brazilian Amazon. Understanding the implications of these findings will be essential for improving estimates of second-ary forest carbon sequestration potential. More accurate quantification of secondary forest carbon stocks will support the production of appropriate management pro-posals that can efficiently harness the potential of secondary forests as a low-cost, nature-based tool for mitigating climate change. MenosSecondary forests are increasing in the Brazilian Amazon and have been cited as an important mechanism for reducing net carbon emissions. However, our under-standing of the contribution of secondary forests to the Amazonian carbon balance is incomplete, and it is unclear to what extent emissions from old-growth deforesta-tion have been offset by secondary forest growth. Using MapBiomas 3.1 and re-cently refined IPCC carbon sequestration estimates, we mapped the age and extent of secondary forests in the Brazilian Amazon and estimated their role in offsetting old-growth deforestation emissions since 1985. We also assessed whether second-ary forests in the Brazilian Amazon are growing in conditions favourable for carbon accumulation in relation to a suite of climatic, landscape and local factors. In 2017, the 129,361 km2 of secondary forest in the Brazilian Amazon stored 0.33± 0.05 bil-lion Mg of above-ground carbon but had offset just 9.37% of old-growth emissions since 1985. However, we find that the majority of Brazilian secondary forests are situated in contexts that are less favourable for carbon accumulation than the biome average. Our results demonstrate that old-growth forest loss remains the most impor-tant factor determining the carbon balance in the Brazilian Amazon. Understanding the implications of these findings will be essential for improving estimates of second-ary forest carbon sequestration potential. More accurate quantification of secondary forest carbon st... Mostrar Tudo |
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Palavras-Chave: |
Regeneração florestal; Sequestro de carbono. |
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Thesagro: |
Floresta Tropical; Mudança Climática; Regeneração Natural; Vegetação Secundária. |
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Thesaurus Nal: |
Carbon sequestration; Climate change; Forest regeneration; Tropical forests. |
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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/220102/1/gcb.15352-2020.pdf
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Marc: |
LEADER 02696naa a2200325 a 4500
001 2126687
005 2021-01-11
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1111/gcb.15352$2DOI
100 1 $aSMITH, C. C.
245 $aSecondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon.$h[electronic resource]
260 $c2020
520 $aSecondary forests are increasing in the Brazilian Amazon and have been cited as an important mechanism for reducing net carbon emissions. However, our under-standing of the contribution of secondary forests to the Amazonian carbon balance is incomplete, and it is unclear to what extent emissions from old-growth deforesta-tion have been offset by secondary forest growth. Using MapBiomas 3.1 and re-cently refined IPCC carbon sequestration estimates, we mapped the age and extent of secondary forests in the Brazilian Amazon and estimated their role in offsetting old-growth deforestation emissions since 1985. We also assessed whether second-ary forests in the Brazilian Amazon are growing in conditions favourable for carbon accumulation in relation to a suite of climatic, landscape and local factors. In 2017, the 129,361 km2 of secondary forest in the Brazilian Amazon stored 0.33± 0.05 bil-lion Mg of above-ground carbon but had offset just 9.37% of old-growth emissions since 1985. However, we find that the majority of Brazilian secondary forests are situated in contexts that are less favourable for carbon accumulation than the biome average. Our results demonstrate that old-growth forest loss remains the most impor-tant factor determining the carbon balance in the Brazilian Amazon. Understanding the implications of these findings will be essential for improving estimates of second-ary forest carbon sequestration potential. More accurate quantification of secondary forest carbon stocks will support the production of appropriate management pro-posals that can efficiently harness the potential of secondary forests as a low-cost, nature-based tool for mitigating climate change.
650 $aCarbon sequestration
650 $aClimate change
650 $aForest regeneration
650 $aTropical forests
650 $aFloresta Tropical
650 $aMudança Climática
650 $aRegeneração Natural
650 $aVegetação Secundária
653 $aRegeneração florestal
653 $aSequestro de carbono
700 1 $aESPÍRITO-SANTO, F. D. B.
700 1 $aHEALEY, J. R.
700 1 $aYOUNG, P. J.
700 1 $aLENNOX, G. D.
700 1 $aFERREIRA, J. N.
700 1 $aBARLOW, J.
773 $tGlobal Change Biology$gv. 26, n. 12, p. 7006-7020, 2020.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
13/11/2018 |
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Data da última atualização: |
16/11/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
GUILHERME, J. P. M.; BRITO, J. F. de F. de; ANDRADE NETO, R. de C.; LUNZ, A. M. P.; ARAÚJO, C. S. de; SANTOS, R. S. dos. |
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Afiliação: |
João Paulo Maia Guilherme, Universidade Federal do Acre (Ufac); Josianny Feitosa de Farias de Brito, Universidade Federal do Acre (Ufac); ROMEU DE CARVALHO ANDRADE NETO, CPAF-AC; AURENY MARIA PEREIRA LUNZ, CPAF-AC; Cleyton Silva de Araújo, Universidade Federal do Acre (Ufac); Rayane Silva dos Santos. |
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Título: |
Bioestimulante na germinação de sementes de açaizeiro (Euterpe precatoria Mart.). |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: SIMPÓSIO DE PROPAGAÇÃO DE PLANTAS E PRODUÇÃO DE MUDAS, 2., 2018, Águas de Lindóia. Qualidade e tecnologia visando sustentabilidade: anais. Campinas: IAC, 2018. |
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Páginas: |
5 p. |
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ISBN: |
978-85-66836-23-3 |
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Idioma: |
Português |
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Conteúdo: |
Embora o consumo do açaí tenha crescido sobremaneira durante os últimos anos, a oferta deste parece evoluir em ritmo inferior, o que tem despertado o interesse de produtores no cultivo do açaizeiro e, consequentemente, intensificado a procura por mudas de qualidade. Contudo, o mecanismo de propagação dessa espécie é por meio de sementes, que apresentam germinação lenta e desuniforme, indicando a existência de algum mecanismo de dormência atuando na germinação destas. O presente trabalho teve como objetivo avaliar o uso de um bioestimulador na germinação de sementes e biomassa de plântulas de Euterpe precatoria Mart. |
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Palavras-Chave: |
Cinetina; Citocinina; Citoquininas; Experimentación en invernadero; Germinación de las semillas; Giberelina; Sustancias de crecimiento vegetal. |
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Thesagro: |
Açaí; Ácido Giberélico; Ácido Indolbutírico; Auxina; Estufa; Germinação; Regulador de Crescimento; Semente. |
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Thesaurus NAL: |
Auxins; Cytokinins; Euterpe precatoria; Gibberellic acid; Gibberellins; Greenhouse experimentation; Indole butyric acid; Plant growth substances; Seed germination. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/185939/1/26719.pdf
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Marc: |
LEADER 02142nam a2200481 a 4500
001 2099286
005 2023-11-16
008 2018 bl uuuu u00u1 u #d
020 $a978-85-66836-23-3
100 1 $aGUILHERME, J. P. M.
245 $aBioestimulante na germinação de sementes de açaizeiro (Euterpe precatoria Mart.).$h[electronic resource]
260 $aIn: SIMPÓSIO DE PROPAGAÇÃO DE PLANTAS E PRODUÇÃO DE MUDAS, 2., 2018, Águas de Lindóia. Qualidade e tecnologia visando sustentabilidade: anais. Campinas: IAC$c2018
300 $a5 p.
520 $aEmbora o consumo do açaí tenha crescido sobremaneira durante os últimos anos, a oferta deste parece evoluir em ritmo inferior, o que tem despertado o interesse de produtores no cultivo do açaizeiro e, consequentemente, intensificado a procura por mudas de qualidade. Contudo, o mecanismo de propagação dessa espécie é por meio de sementes, que apresentam germinação lenta e desuniforme, indicando a existência de algum mecanismo de dormência atuando na germinação destas. O presente trabalho teve como objetivo avaliar o uso de um bioestimulador na germinação de sementes e biomassa de plântulas de Euterpe precatoria Mart.
650 $aAuxins
650 $aCytokinins
650 $aEuterpe precatoria
650 $aGibberellic acid
650 $aGibberellins
650 $aGreenhouse experimentation
650 $aIndole butyric acid
650 $aPlant growth substances
650 $aSeed germination
650 $aAçaí
650 $aÁcido Giberélico
650 $aÁcido Indolbutírico
650 $aAuxina
650 $aEstufa
650 $aGerminação
650 $aRegulador de Crescimento
650 $aSemente
653 $aCinetina
653 $aCitocinina
653 $aCitoquininas
653 $aExperimentación en invernadero
653 $aGerminación de las semillas
653 $aGiberelina
653 $aSustancias de crecimiento vegetal
700 1 $aBRITO, J. F. de F. de
700 1 $aANDRADE NETO, R. de C.
700 1 $aLUNZ, A. M. P.
700 1 $aARAÚJO, C. S. de
700 1 $aSANTOS, R. S. dos
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Embrapa Acre (CPAF-AC) |
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