Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems.
Integrated crop-livestock-forest (ICLF) systems has been considered as an important strategy to enhance C sequestration. However, changes in soil C due to agricultural management practices, in general, are observed in long-term experiments. Our objective was to investigate short-term impacts on soil organic matter under different management systems in the Cerrado/Amazonia region. Treatments corresponded to ICLF, No-tillage, Pasture and Eucalyptus plantation. Soil was sampled in 2014, in the 0-5, 5-10 and 10-30 cm layers for quantification of light- and heavy-fraction C stocks as well as their C isotopic composition (DELTA 13C). After three years established, all evaluated treatments showed similar values of light- and heavy-fraction C stocks to those observed under Native Forest in the 0-30 cm layer. Under Pasture and ILCF treatments, we observed that most of C of the light-fraction was substituted by pasturederived C in the uppermost soil layer (0-5 cm). Despite no differences in heavyand light-fraction C, the application of 13C stable isotope technique seems to be an important tool to evaluate short-term C turnover under agricultural systems.
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Idioma: | English eng |
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2018-01-15
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Assuntos: | Agricultura conservacionista, Integração lavoura-pecuária-floresta, Carbono do solo, |
Acesso em linha: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085351 |
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dig-alice-doc-10853512018-01-15T23:22:08Z Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems. MATOS, E. da S. CONCEIÇÃO, M. C. G. da BIDONE, E. G. RODRIGUES, R. de A. R. CORDEIRO, R. C. EDUARDO DA SILVA MATOS, CPAMT; MARCELA C. G. DA CONCEIÇÃO, UFF; EDISON G. BIDONE, UFF; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS; RENATO C. CORDEIRO, UFF. Agricultura conservacionista Integração lavoura-pecuária-floresta Carbono do solo Integrated crop-livestock-forest (ICLF) systems has been considered as an important strategy to enhance C sequestration. However, changes in soil C due to agricultural management practices, in general, are observed in long-term experiments. Our objective was to investigate short-term impacts on soil organic matter under different management systems in the Cerrado/Amazonia region. Treatments corresponded to ICLF, No-tillage, Pasture and Eucalyptus plantation. Soil was sampled in 2014, in the 0-5, 5-10 and 10-30 cm layers for quantification of light- and heavy-fraction C stocks as well as their C isotopic composition (DELTA 13C). After three years established, all evaluated treatments showed similar values of light- and heavy-fraction C stocks to those observed under Native Forest in the 0-30 cm layer. Under Pasture and ILCF treatments, we observed that most of C of the light-fraction was substituted by pasturederived C in the uppermost soil layer (0-5 cm). Despite no differences in heavyand light-fraction C, the application of 13C stable isotope technique seems to be an important tool to evaluate short-term C turnover under agricultural systems. 2018-01-15T23:22:02Z 2018-01-15T23:22:02Z 2018-01-15 2017 2018-01-15T23:22:02Z Parte de livro In: ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS E MATÉRIA ORGÂNICA NATURAL, 12., 2017, Sinop. Matéria orgânica e suas múltiplas funcionalidades: livro de resumos. Sinop: [s.n.], 2017. p. 128-131. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085351 en eng openAccess |
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Agricultura conservacionista Integração lavoura-pecuária-floresta Carbono do solo Agricultura conservacionista Integração lavoura-pecuária-floresta Carbono do solo |
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Agricultura conservacionista Integração lavoura-pecuária-floresta Carbono do solo Agricultura conservacionista Integração lavoura-pecuária-floresta Carbono do solo MATOS, E. da S. CONCEIÇÃO, M. C. G. da BIDONE, E. G. RODRIGUES, R. de A. R. CORDEIRO, R. C. Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems. |
description |
Integrated crop-livestock-forest (ICLF) systems has been considered as an important strategy to enhance C sequestration. However, changes in soil C due to agricultural management practices, in general, are observed in long-term experiments. Our objective was to investigate short-term impacts on soil organic matter under different management systems in the Cerrado/Amazonia region. Treatments corresponded to ICLF, No-tillage, Pasture and Eucalyptus plantation. Soil was sampled in 2014, in the 0-5, 5-10 and 10-30 cm layers for quantification of light- and heavy-fraction C stocks as well as their C isotopic composition (DELTA 13C). After three years established, all evaluated treatments showed similar values of light- and heavy-fraction C stocks to those observed under Native Forest in the 0-30 cm layer. Under Pasture and ILCF treatments, we observed that most of C of the light-fraction was substituted by pasturederived C in the uppermost soil layer (0-5 cm). Despite no differences in heavyand light-fraction C, the application of 13C stable isotope technique seems to be an important tool to evaluate short-term C turnover under agricultural systems. |
author2 |
EDUARDO DA SILVA MATOS, CPAMT; MARCELA C. G. DA CONCEIÇÃO, UFF; EDISON G. BIDONE, UFF; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS; RENATO C. CORDEIRO, UFF. |
author_facet |
EDUARDO DA SILVA MATOS, CPAMT; MARCELA C. G. DA CONCEIÇÃO, UFF; EDISON G. BIDONE, UFF; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS; RENATO C. CORDEIRO, UFF. MATOS, E. da S. CONCEIÇÃO, M. C. G. da BIDONE, E. G. RODRIGUES, R. de A. R. CORDEIRO, R. C. |
format |
Parte de livro |
topic_facet |
Agricultura conservacionista Integração lavoura-pecuária-floresta Carbono do solo |
author |
MATOS, E. da S. CONCEIÇÃO, M. C. G. da BIDONE, E. G. RODRIGUES, R. de A. R. CORDEIRO, R. C. |
author_sort |
MATOS, E. da S. |
title |
Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems. |
title_short |
Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems. |
title_full |
Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems. |
title_fullStr |
Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems. |
title_full_unstemmed |
Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems. |
title_sort |
soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems. |
publishDate |
2018-01-15 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085351 |
work_keys_str_mv |
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_version_ |
1756024276923711488 |