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dc.contributor.authorLEAL, O. dos A.
dc.contributor.authorJIMÉNEZ-MORILLO, N. T.
dc.contributor.authorGONZÁLEZ-PÉREZ, J. A.
dc.contributor.authorKNICKER, H.
dc.contributor.authorCOSTA, F. de S.
dc.contributor.authorJIMÉNEZ-MORILLO, P. N.
dc.contributor.authorCARVALHO JUNIOR, J. A. de
dc.contributor.authorSANTOS, J. C. dos
dc.contributor.authorDICK, D. P.
dc.date.accessioned2023-02-17T22:18:31Z-
dc.date.available2023-02-17T22:18:31Z-
dc.date.created2023-02-17
dc.date.issued2023
dc.identifier.citationInternational Journal of Environmental Research and Public Health, v. 20, n. 4, 3485, Feb. 2023.
dc.identifier.issn1661-7827 (impresso) / 1660-4601 (online)
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1151856-
dc.descriptionSlash-and-burn of Amazon Forest (AF) for pasture establishment has increased the occurrence of AF wildfires. Recent studies emphasize soil organic matter (SOM) molecular composition as a principal driver of post-fire forest regrowth and restoration of AF anti-wildfire ambience. Nevertheless, SOM chemical shifts caused by AF fires and post-fire vegetation are rarely investigated at a molecular level. We employed pyrolysis-gas chromatography-mass spectrometry to reveal molecular changes in SOM (0?10, 40?50 cm depth) of a slash-burn-and-20-month-regrowth AF (BAF) and a 23-year Brachiaria pasture post-AF fire (BRA) site compared to native AF (NAF). In BAF (0-10 cm), increased abundance of unspecific aromatic compounds (UACs), polycyclic aromatic hydrocarbons (PAHs) and lipids (Lip) coupled with a depletion of polysaccharides (Pol) revealed strong lingering effects of fire on SOM. This occurs despite fresh litter deposition on soil, suggesting SOM minimal recovery and toxicity to microorganisms. Accumulation of recalcitrant compounds and slow decomposition of fresh forest material may explain the higher carbon content in BAF (0?5 cm). In BRA, SOM was dominated by Brachiaria contributions. At 40?50 cm, alkyl and hydroaromatic compounds accumulated in BRA, whereas UACs accumulated in BAF. UACs and PAH compounds were abundant in NAF, possibly air-transported from BAF.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectDerruba-e-queima
dc.subjectSlash-and-burn agriculture
dc.subjectAsentamiento humanoeng
dc.subjectAcrisoleseng
dc.subjectRegeneración naturaleng
dc.subjectMateria orgánica del sueloeng
dc.subjectPastizaleseng
dc.subjectQuímica del sueloeng
dc.subjectMolecular compositioneng
dc.subjectComposição moleculareng
dc.subjectComposición moleculareng
dc.subjectNitroalkaneseng
dc.subjectNitroalcanoseng
dc.subjectVan Krevelen 3D diagrameng
dc.subjectAnalytical pyrolysiseng
dc.subjectAssentamento Santa Luzia (AC)eng
dc.subjectCruzeiro do Sul (AC)eng
dc.subjectAcreeng
dc.subjectAmazônia Ocidentaleng
dc.subjectWestern Amazoneng
dc.subjectAmazonia Occidentaleng
dc.titleSoil organic matter molecular composition shifts driven by forest regrowth or pasture after slash-and-burn of Amazon Forest.
dc.typeArtigo de periódico
dc.subject.thesagroSistema de Cultivo
dc.subject.thesagroCultivo Migratório
dc.subject.thesagroRegeneração Natural
dc.subject.thesagroPastagem
dc.subject.thesagroBrachiaria
dc.subject.thesagroQuímica do Soloeng
dc.subject.thesagroSoloeng
dc.subject.thesagroMatéria Orgânicaeng
dc.subject.nalthesaurusHuman settlements
dc.subject.nalthesaurusShifting cultivation
dc.subject.nalthesaurusAcrisolseng
dc.subject.nalthesaurusNatural regenerationeng
dc.subject.nalthesaurusSoil organic mattereng
dc.subject.nalthesaurusPastureseng
dc.subject.nalthesaurusSoil chemistryeng
riaa.ainfo.id1151856
riaa.ainfo.lastupdate2023-02-17
dc.identifier.doihttps://doi.org/10.3390/ijerph20043485
dc.contributor.institutionOTÁVIO DOS ANJOS LEAL, INSTITUTE OF BIO AND GESOCIENCE AGROSPHERE; NICASIO T. JIMÉNEZ-MORILLO, UNIVERSIDADE DE ÉVORA /I NSTITUTO DE RECURSOS NATURALES Y AGROBIOLOGÍA DE SEVILLA; JOSÉ A. GONZÁLEZ-PÉREZ, INSTITUTO DE RECURSOS NATURALES Y AGROBIOLOGÍA DE SEVILLA; HEIKE KNICKER, INSTITUTO DE RECURSOS NATURALES Y AGROBIOLOGÍA DE SEVILLA; FALBERNI DE SOUZA COSTA, CPAF-AC; PEDRO N. JIMÉNEZ-MORILLO, UNIVERSIDAD PABLO DE OLAVIDE; JOÃO ANDRADE DE CARVALHO JÚNIOR, UNIVERSIDADE ESTADUAL PAULISTA; JOSÉ CARLOS DOS SANTOS, INSTITUTO NACIONAL DE PESQUISAS ESPACIAIS; DEBORAH PINHEIRO DICK, UNIVESIDADE FEDERAL DO RIO GRANDE DO SUL.
Appears in Collections:Artigo em periódico indexado (CPAF-AC)

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