Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Registro completo
Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Resistance of soil organic matter in "humic A horizons" of the mountainous region in the state of Rio de Janeiro.
Autores:  FONTANA, A.
PEREIRA, M. G.
BALIEIRO, F. de C.
CHAGAS, C. da S.
DONAGEMMA, G. K.
OLIVEIRA, L. S de
Data:  2020-04-22
Ano:  2020
Palavras-chave:  Carbono orgânico
Substâncias húmicas
Composição isotópica
Carbono
Horizonte
Soil organic carbon
Humic substances
Resumo:  Soils with high organic carbon content, such as those with "humic A horizon", occur in different regions of Brazil. This study aimed to determine the quantitative and qualitative characteristics of organic matter regarding the humic A horizon under different land uses in Bom Jardim, in Rio de Janeiro State, Brazil. Samples from forest, pasture, Eucalyptus plantation, coffee cultivation, olericulture, and also passion fruit soils were sampled and analyzed. In October 2011, undisturbed samples from humic A horizons, were collected for soil density analysis. In addition, disturbed samples were collected for the determination of organic carbon (C-org) content, total carbon, humic substance fractions contents and natural abundance of (13)Carbon (delta C-13). Low C-org contents were observed in areas under olericulture, pasture and passion fruit cultivation. The fulvic acid fraction was higher than other fractions, regardless of land use. The small variability in delta C-13 indicated maintenance of original C-org and suggest high resistance of Soil Organic Matter in humic A horizons.
Tipo:  Artigo de periódico
Idioma:  Inglês
Identificador:  Floresta e Ambiente, v. 27, n. 1, e20190091, 2020.

http://www.alice.cnptia.embrapa.br/alice/handle/doc/1121775

http://dx.doi.org/10.1590/2179-8087.009119
Direitos:  openAccess
Fechar
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional