Secondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon.

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.

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Main Authors: SMITH, C. C., ESPÍRITO-SANTO, F. D. B., HEALEY, J. R., YOUNG, P. J., LENNOX, G. D., FERREIRA, J. N., BARLOW, J.
Other Authors: 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.
Format: Artigo de periódico biblioteca
Language:Ingles
English
Published: 2020-11-17
Subjects:Sequestro de carbono, Regeneração florestal, Mudança Climática, Regeneração Natural, Vegetação Secundária, Floresta Tropical, Carbon sequestration, Climate change, Forest regeneration, Tropical forests,
Online Access:http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126687
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spelling dig-alice-doc-11266872021-01-12T09:05:31Z Secondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon. SMITH, C. C. ESPÍRITO-SANTO, F. D. B. HEALEY, J. R. YOUNG, P. J. LENNOX, G. D. FERREIRA, J. N. BARLOW, J. 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. Sequestro de carbono Regeneração florestal Mudança Climática Regeneração Natural Vegetação Secundária Floresta Tropical Carbon sequestration Climate change Forest regeneration Tropical forests 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. 2021-01-12T09:05:22Z 2021-01-12T09:05:22Z 2020-11-17 2020 Artigo de periódico Global Change Biology, v. 26, n. 12, p. 7006-7020, 2020. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126687 10.1111/gcb.15352 Ingles en openAccess
institution EMBRAPA
collection DSpace
country Brasil
countrycode BR
component Bibliográfico
access En linea
databasecode dig-alice
tag biblioteca
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language Ingles
English
topic Sequestro de carbono
Regeneração florestal
Mudança Climática
Regeneração Natural
Vegetação Secundária
Floresta Tropical
Carbon sequestration
Climate change
Forest regeneration
Tropical forests
Sequestro de carbono
Regeneração florestal
Mudança Climática
Regeneração Natural
Vegetação Secundária
Floresta Tropical
Carbon sequestration
Climate change
Forest regeneration
Tropical forests
spellingShingle Sequestro de carbono
Regeneração florestal
Mudança Climática
Regeneração Natural
Vegetação Secundária
Floresta Tropical
Carbon sequestration
Climate change
Forest regeneration
Tropical forests
Sequestro de carbono
Regeneração florestal
Mudança Climática
Regeneração Natural
Vegetação Secundária
Floresta Tropical
Carbon sequestration
Climate change
Forest regeneration
Tropical forests
SMITH, C. C.
ESPÍRITO-SANTO, F. D. B.
HEALEY, J. R.
YOUNG, P. J.
LENNOX, G. D.
FERREIRA, J. N.
BARLOW, J.
Secondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon.
description 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.
author2 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.
author_facet 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.
SMITH, C. C.
ESPÍRITO-SANTO, F. D. B.
HEALEY, J. R.
YOUNG, P. J.
LENNOX, G. D.
FERREIRA, J. N.
BARLOW, J.
format Artigo de periódico
topic_facet Sequestro de carbono
Regeneração florestal
Mudança Climática
Regeneração Natural
Vegetação Secundária
Floresta Tropical
Carbon sequestration
Climate change
Forest regeneration
Tropical forests
author SMITH, C. C.
ESPÍRITO-SANTO, F. D. B.
HEALEY, J. R.
YOUNG, P. J.
LENNOX, G. D.
FERREIRA, J. N.
BARLOW, J.
author_sort SMITH, C. C.
title Secondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon.
title_short Secondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon.
title_full Secondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon.
title_fullStr Secondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon.
title_full_unstemmed Secondary forests offset less than 10% of deforestation-mediated carbon emissions in the Brazilian Amazon.
title_sort secondary forests offset less than 10% of deforestation-mediated carbon emissions in the brazilian amazon.
publishDate 2020-11-17
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126687
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