Agrosilvopastoral system as a potential model for increasing soil carbon stocks: a century model approach

ABSTRACT Agrosilvopastoral systems have been used as sustainable production models that can promote soil organic carbon (SOC) storage. However, there are no simulation studies with the Century model to estimate the SOC accumulation capacity in the long term, analyzing the effects of management and c...

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Main Authors: Juliana Martins Ribeiro, Igor Costa de Freitas, Betânia Guedes Souza e Brito, Luiz Arnaldo Fernandes, Luiz Fernando Carvalho Leite, Demerson Luiz de Almeida Barbosa, Márcia Vitória Santos, Carlos Eduardo Pellegrino Cerri, Leidivan Almeida Frazão
Format: Article
Language:English
Published: Sociedade Brasileira de Ciência do Solo 2023-03-01
Series:Revista Brasileira de Ciência do Solo
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832023000100403&lng=en&tlng=en
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author Juliana Martins Ribeiro
Igor Costa de Freitas
Betânia Guedes Souza e Brito
Luiz Arnaldo Fernandes
Luiz Fernando Carvalho Leite
Demerson Luiz de Almeida Barbosa
Márcia Vitória Santos
Carlos Eduardo Pellegrino Cerri
Leidivan Almeida Frazão
author_facet Juliana Martins Ribeiro
Igor Costa de Freitas
Betânia Guedes Souza e Brito
Luiz Arnaldo Fernandes
Luiz Fernando Carvalho Leite
Demerson Luiz de Almeida Barbosa
Márcia Vitória Santos
Carlos Eduardo Pellegrino Cerri
Leidivan Almeida Frazão
author_sort Juliana Martins Ribeiro
collection DOAJ
description ABSTRACT Agrosilvopastoral systems have been used as sustainable production models that can promote soil organic carbon (SOC) storage. However, there are no simulation studies with the Century model to estimate the SOC accumulation capacity in the long term, analyzing the effects of management and climate change in integrated crop-livestock-forest (ICLF) systems. This study aimed to simulate soil C dynamics in two chronosequences of land-use composed of native vegetation (NV), degraded pasture (DPA) and ICLF system in the Cerrado of Minas Gerais, in addition to designing future scenarios to verify the potential of SOC accumulation through climate change. The results showed that the Century model reliably simulated the SOC stocks in the two chronosequences evaluated. The model predicted an increase in SOC stocks at two sites by converting the DPA system (46.04 and 42.38 Mg ha-1) into ICLF systems (54.94 and 51.71 Mg ha-1). The Century also predicted that a 20 mm decrease in rainfall and a 2 °C increase in temperature in the tropical regions studied could reduce the SOC stocks more expressively in degraded pastures, while agroforestry systems could show a smaller reduction in SOC stocks. In addition, the results showed that replacing degraded pastures into agrosilvopastoral systems, especially in clayey soils, contributes to increasing SOC stocks. Thus, agroforestry systems are potentially viable to maintain the sustainability of agriculture in the face of climate change.
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spelling doaj.art-2baccf6bdc2c4629bfb750ba0444391b2023-07-11T07:51:23ZengSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo1806-96572023-03-014710.36783/18069657rbcs20220136Agrosilvopastoral system as a potential model for increasing soil carbon stocks: a century model approachJuliana Martins Ribeirohttps://orcid.org/0000-0001-6131-4992Igor Costa de Freitashttps://orcid.org/0000-0002-2014-7726Betânia Guedes Souza e Britohttps://orcid.org/0000-0002-4738-8589Luiz Arnaldo Fernandeshttps://orcid.org/0000-0002-9877-1924Luiz Fernando Carvalho Leitehttps://orcid.org/0000-0001-9648-705XDemerson Luiz de Almeida Barbosahttps://orcid.org/0000-0001-9326-7158Márcia Vitória Santoshttps://orcid.org/0000-0002-3448-546XCarlos Eduardo Pellegrino Cerrihttps://orcid.org/0000-0002-4374-4056Leidivan Almeida Frazãohttps://orcid.org/0000-0001-6848-9007ABSTRACT Agrosilvopastoral systems have been used as sustainable production models that can promote soil organic carbon (SOC) storage. However, there are no simulation studies with the Century model to estimate the SOC accumulation capacity in the long term, analyzing the effects of management and climate change in integrated crop-livestock-forest (ICLF) systems. This study aimed to simulate soil C dynamics in two chronosequences of land-use composed of native vegetation (NV), degraded pasture (DPA) and ICLF system in the Cerrado of Minas Gerais, in addition to designing future scenarios to verify the potential of SOC accumulation through climate change. The results showed that the Century model reliably simulated the SOC stocks in the two chronosequences evaluated. The model predicted an increase in SOC stocks at two sites by converting the DPA system (46.04 and 42.38 Mg ha-1) into ICLF systems (54.94 and 51.71 Mg ha-1). The Century also predicted that a 20 mm decrease in rainfall and a 2 °C increase in temperature in the tropical regions studied could reduce the SOC stocks more expressively in degraded pastures, while agroforestry systems could show a smaller reduction in SOC stocks. In addition, the results showed that replacing degraded pastures into agrosilvopastoral systems, especially in clayey soils, contributes to increasing SOC stocks. Thus, agroforestry systems are potentially viable to maintain the sustainability of agriculture in the face of climate change.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832023000100403&lng=en&tlng=enagroforestryclimate changeland-use changesoil organic matter
spellingShingle Juliana Martins Ribeiro
Igor Costa de Freitas
Betânia Guedes Souza e Brito
Luiz Arnaldo Fernandes
Luiz Fernando Carvalho Leite
Demerson Luiz de Almeida Barbosa
Márcia Vitória Santos
Carlos Eduardo Pellegrino Cerri
Leidivan Almeida Frazão
Agrosilvopastoral system as a potential model for increasing soil carbon stocks: a century model approach
Revista Brasileira de Ciência do Solo
agroforestry
climate change
land-use change
soil organic matter
title Agrosilvopastoral system as a potential model for increasing soil carbon stocks: a century model approach
title_full Agrosilvopastoral system as a potential model for increasing soil carbon stocks: a century model approach
title_fullStr Agrosilvopastoral system as a potential model for increasing soil carbon stocks: a century model approach
title_full_unstemmed Agrosilvopastoral system as a potential model for increasing soil carbon stocks: a century model approach
title_short Agrosilvopastoral system as a potential model for increasing soil carbon stocks: a century model approach
title_sort agrosilvopastoral system as a potential model for increasing soil carbon stocks a century model approach
topic agroforestry
climate change
land-use change
soil organic matter
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832023000100403&lng=en&tlng=en
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