Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture

Detalhes bibliográficos
Autor(a) principal: Leal, Otávio A.
Data de Publicação: 2019
Outros Autores: Dick, Deborah P., Costa, Falberni S., Knicker, Heike, de Carvalho Júnior, João A. [UNESP], Santos, José C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.21577/0103-5053.20180191
http://hdl.handle.net/11449/187204
Resumo: 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.
id UNSP_d50cb59ca8980fb5bf1923e8072a8836
oai_identifier_str oai:repositorio.unesp.br:11449/187204
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture13C NMRAromaticityClayDeep stocksSaturationThe 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.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Instituto Federal Catarinense (IFC)Departamento de Química Universidade Federal do Rio Grande do Sul (UFRGS)Embrapa Acre, Rodovia BR-364, km 14Instituto de Recursos Naturales y Agrobiología de SevillaDepartamento de Energia Universidade Estadual Paulista (UNESP)Laboratório Associado de Combustão e Propulsão Instituto Nacional de Pesquisas Espaciais (INPE)Departamento de Energia Universidade Estadual Paulista (UNESP)FAPESP: 08/04490-4FAPESP: 575795/2008-5Instituto Federal Catarinense (IFC)Universidade Federal do Rio Grande do Sul (UFRGS)Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Instituto de Recursos Naturales y Agrobiología de SevillaUniversidade Estadual Paulista (Unesp)Instituto Nacional de Pesquisas Espaciais (INPE)Leal, Otávio A.Dick, Deborah P.Costa, Falberni S.Knicker, Heikede Carvalho Júnior, João A. [UNESP]Santos, José C.2019-10-06T15:28:41Z2019-10-06T15:28:41Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article413-424application/pdfhttp://dx.doi.org/10.21577/0103-5053.20180191Journal of the Brazilian Chemical Society, v. 30, n. 2, p. 413-424, 2019.1678-47900103-5053http://hdl.handle.net/11449/18720410.21577/0103-5053.20180191S0103-505320190002004132-s2.0-85059000321S0103-50532019000200413.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Brazilian Chemical Societyinfo:eu-repo/semantics/openAccess2023-10-11T06:04:01Zoai:repositorio.unesp.br:11449/187204Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-11T06:04:01Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture
title Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture
spellingShingle Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture
Leal, Otávio A.
13C NMR
Aromaticity
Clay
Deep stocks
Saturation
title_short Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture
title_full Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture
title_fullStr Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture
title_full_unstemmed Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture
title_sort Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture
author Leal, Otávio A.
author_facet Leal, Otávio A.
Dick, Deborah P.
Costa, Falberni S.
Knicker, Heike
de Carvalho Júnior, João A. [UNESP]
Santos, José C.
author_role author
author2 Dick, Deborah P.
Costa, Falberni S.
Knicker, Heike
de Carvalho Júnior, João A. [UNESP]
Santos, José C.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Instituto Federal Catarinense (IFC)
Universidade Federal do Rio Grande do Sul (UFRGS)
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Instituto de Recursos Naturales y Agrobiología de Sevilla
Universidade Estadual Paulista (Unesp)
Instituto Nacional de Pesquisas Espaciais (INPE)
dc.contributor.author.fl_str_mv Leal, Otávio A.
Dick, Deborah P.
Costa, Falberni S.
Knicker, Heike
de Carvalho Júnior, João A. [UNESP]
Santos, José C.
dc.subject.por.fl_str_mv 13C NMR
Aromaticity
Clay
Deep stocks
Saturation
topic 13C NMR
Aromaticity
Clay
Deep stocks
Saturation
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.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-06T15:28:41Z
2019-10-06T15:28:41Z
2019-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.21577/0103-5053.20180191
Journal of the Brazilian Chemical Society, v. 30, n. 2, p. 413-424, 2019.
1678-4790
0103-5053
http://hdl.handle.net/11449/187204
10.21577/0103-5053.20180191
S0103-50532019000200413
2-s2.0-85059000321
S0103-50532019000200413.pdf
url http://dx.doi.org/10.21577/0103-5053.20180191
http://hdl.handle.net/11449/187204
identifier_str_mv Journal of the Brazilian Chemical Society, v. 30, n. 2, p. 413-424, 2019.
1678-4790
0103-5053
10.21577/0103-5053.20180191
S0103-50532019000200413
2-s2.0-85059000321
S0103-50532019000200413.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of the Brazilian Chemical Society
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 413-424
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1799964517746081792