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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Solos. |
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Data corrente: |
23/08/2022 |
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Data da última atualização: |
23/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOARES, R.; CAMPOS, D. V. B. de; MADARI, B. E.; MACHADO, P. L. O. de A.; MADDOCK, J. E. L. |
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Afiliação: |
RICARDO SOARES, INEA/UVA/UFF; DAVID VILAS BOAS DE CAMPOS, CNPS; BEATA EMOKE MADARI, CNPAF; PEDRO LUIZ OLIVEIRA DE A MACHADO, CNPAF; JOHN EDMUND LEWIS MADDOCK, UFF. |
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Título: |
Determinação dos estoques de carbono das substâncias húmicas e vulnerabilidade às emissões em solos arqueológicos e não arqueológicos da Amazônia Central. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Revista Virtual de Química, 2023. |
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DOI: |
http://dx.doi.org/10.21577/1984-6835.20220110 |
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Idioma: |
Português |
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Notas: |
On-line first. |
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Conteúdo: |
The Amazon Region has archaeological soils called Amazonian Dark Earths (Terras Pretas de Indio) which
are very efficient in retaining a large amount of highly stable organic matter when compared to typical
non-archaeological soils in the region. The objective of this study was to determine the distribution, in-
depth, of the carbon concentrations and stocks contained in Humic Acids, Fulvic Acids, and Humine from
Amazonian Dark Earths and Acrisols typical of Central Amazonia under secondary forests with a different
fallow. The chemical fractionation of humic substances was performed using the method of sequential
extraction by the difference in solubility. The Amazonian Dark Earths areas showed higher concentrations
of total carbon but behaved differently to non-archaeological soils. There carbon stock's CFA fraction was a
predominance for the P01 soil and CH fraction for the P02 soil, while for the non-archaeological soils, the
carbon stock's CHA fraction was predominant (100%). The relationships commonly used in studies on the
distribution of humic substances (CHA/CFA and CAE/CH) are not appropriate for evaluating the stabilization
mechanisms of organic matter in the Amazonian Dark Earths. |
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Palavras-Chave: |
Amazonian Dark Earths; Substâncias húmicas; Terra Preta de Índio. |
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Thesagro: |
Carbono; Estoque; Matéria Orgânica; Mudança Climática; Nitrogênio; Solo. |
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Thesaurus Nal: |
Carbon; Climate change; Humic substances; Nitrogen; Soil organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1145681/1/Determinacao-dos-estoques-de-carbono-das-substancias-humicas-2023.pdf
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Marc: |
LEADER 02320naa a2200361 a 4500
001 2145681
005 2022-08-23
008 2023 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.21577/1984-6835.20220110$2DOI
100 1 $aSOARES, R.
245 $aDeterminação dos estoques de carbono das substâncias húmicas e vulnerabilidade às emissões em solos arqueológicos e não arqueológicos da Amazônia Central.$h[electronic resource]
260 $c2023
500 $aOn-line first.
520 $aThe Amazon Region has archaeological soils called Amazonian Dark Earths (Terras Pretas de Indio) which are very efficient in retaining a large amount of highly stable organic matter when compared to typical non-archaeological soils in the region. The objective of this study was to determine the distribution, in- depth, of the carbon concentrations and stocks contained in Humic Acids, Fulvic Acids, and Humine from Amazonian Dark Earths and Acrisols typical of Central Amazonia under secondary forests with a different fallow. The chemical fractionation of humic substances was performed using the method of sequential extraction by the difference in solubility. The Amazonian Dark Earths areas showed higher concentrations of total carbon but behaved differently to non-archaeological soils. There carbon stock's CFA fraction was a predominance for the P01 soil and CH fraction for the P02 soil, while for the non-archaeological soils, the carbon stock's CHA fraction was predominant (100%). The relationships commonly used in studies on the distribution of humic substances (CHA/CFA and CAE/CH) are not appropriate for evaluating the stabilization mechanisms of organic matter in the Amazonian Dark Earths.
650 $aCarbon
650 $aClimate change
650 $aHumic substances
650 $aNitrogen
650 $aSoil organic matter
650 $aCarbono
650 $aEstoque
650 $aMatéria Orgânica
650 $aMudança Climática
650 $aNitrogênio
650 $aSolo
653 $aAmazonian Dark Earths
653 $aSubstâncias húmicas
653 $aTerra Preta de Índio
700 1 $aCAMPOS, D. V. B. de
700 1 $aMADARI, B. E.
700 1 $aMACHADO, P. L. O. de A.
700 1 $aMADDOCK, J. E. L.
773 $tRevista Virtual de Química, 2023.
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Registro original: |
Embrapa Solos (CNPS) |
