Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1096433
Research center of Embrapa/Collection: Embrapa Acre - Artigo em periódico indexado (ALICE)
Issue Date: 2019
Type of Material: Artigo em periódico indexado (ALICE)
Authors: LEAL, O. A.
DICK, D. P.
COSTA, F. de S.
KNICKER, H.
CARVALHO JÚNIOR, J. A. de
SANTOS, J. C.
Additional Information: Otávio A. Leal, Instituto Federal Catarinense (IFC); Deborah P. Dick, Universidade Federal do Rio Grande do Sul (UFRGS); FALBERNI DE SOUZA COSTA, CPAF-AC; Heike Knicker, Instituto de Recursos Naturales y Agrobiología de Sevilla; João A. de Carvalho Júnior, Universidade Estadual Paulista (UNESP); José C. Santos, Instituto Nacional de Pesquisas Espaciais (INPE).
Title: Carbon in physical fractions and organic matter chemical composition of an acrisol after amazon forest burning and conversion into pasture.
Publisher: Journal of the Brazilian Chemical Society, v. 30, n. 2, p. 413-424, 2019.
Language: en
Keywords: Bosque tropical húmedo
Suelos quemados
Regeneración natural
Materia orgánica del suelo
Reservorios de carbono
Acrisoles
Fazenda Santa Luzia
Cruzeiro do Sul (AC)
Acre
Amazônia Ocidental
Western Amazon
Amazonia Occidental
Description: The aim of this study was to investigate impacts of Amazon Forest (AF) fire and conversion to pasture on carbon accumulation in particle size fractions and organic matter (OM) composition of an Acrisol. Soil samples were collected (0.00-2.00 m depth) in three sites: native AF (NAF); AF under natural regeneration for two years after burning (BAF); 23-years old Brachiaria pasture after AF burning (BRA). Assuming NAF area as reference, BAF and BRA areas showed negative carbon balance when carbon emitted to the atmosphere at AF burning is taken into account. Soil OM aromaticity and hydrophobicity, assessed via 13C nuclear magnetic resonance, in BRA and BAF were similar to that in NAF. Fire and post-fire land use altered the carbon distribution in sand, silt and clay along the soil profile and seem to have affected organo-mineral and OM self-assemblage interactions, since the relation between total soil carbon and carbon in clay was asymptotic in BAF and linear in NAF and BRA.
Thesagro: Floresta Tropical
Fogo
Impacto Ambiental
Regeneração Natural
Matéria Orgânica
Carbono
Estoque
Argissolos
Saturação
NAL Thesaurus: Tropical rain forests
Burnt soils
Environmental impact
Natural regeneration
Soil organic matter
Carbon sinks
Acrisols
Year: 2018-09-27
ISSN: 0103-5053 (impresso) / 1678-4790 (online)
Appears in Collections:Artigo em periódico indexado (CPAF-AC)

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