@Article{LealDiCoKnCaSa:2019:CaPhFr,
author = "Leal, Ot{\'a}vio A. and Dick, Deborah P. and Costa, Falberni S.
and Knicker, Heike and Carvalho J{\'u}nior, Jo{\~a}o A. de and
Santos, Jos{\'e} Carlos dos",
affiliation = "{Instituto Federal Catarinense (IFC)} and {Universidade Federal do
Rio Grande do Sul (UFRGS)} and {Empresa Brasileira de Pesquisa
Agropecu{\'a}ria (EMBRAPA)} and {Instituto de Recursos Naturales
y Agrobiolog{\'{\i}}a de Sevilla} and {Universidade Estadual
Paulista (UNESP)} and {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",
journal = "Journal of the Brazilian Chemical Society",
year = "2019",
volume = "30",
number = "2",
pages = "413--424",
keywords = "clay, saturation, deep stocks, aromaticity, 13C NMR.",
abstract = "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.",
doi = "10.21577/0103-5053.20180191",
url = "http://dx.doi.org/10.21577/0103-5053.20180191",
issn = "0103-5053",
language = "en",
targetfile = "leal_carbon.pdf",
urlaccessdate = "28 abr. 2024"
}