Carbon in physical fractions and organic matter chemical composition of an acrisol after Amazon forest burning and conversion into pasture
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , , , |
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 |