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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
17/02/2023 |
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Data da última atualização: |
17/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LEAL, O. dos A.; JIMÉNEZ-MORILLO, N. T.; GONZÁLEZ-PÉREZ, J. A.; KNICKER, H.; COSTA, F. de S.; JIMÉNEZ-MORILLO, P. N.; CARVALHO JUNIOR, J. A. de; SANTOS, J. C. dos; DICK, D. P. |
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Afiliação: |
OTÁVIO 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. |
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Título: |
Soil organic matter molecular composition shifts driven by forest regrowth or pasture after slash-and-burn of Amazon Forest. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
International Journal of Environmental Research and Public Health, v. 20, n. 4, 3485, Feb. 2023. |
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ISSN: |
1661-7827 (impresso) / 1660-4601 (online) |
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DOI: |
https://doi.org/10.3390/ijerph20043485 |
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Idioma: |
Inglês |
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Conteúdo: |
Slash-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. |
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Palavras-Chave: |
Acre; Acrisoles; Amazonia Occidental; Amazônia Ocidental; Analytical pyrolysis; Asentamiento humano; Assentamento Santa Luzia (AC); Composição molecular; Composición molecular; Cruzeiro do Sul (AC); Derruba-e-queima; Materia orgánica del suelo; Molecular composition; Nitroalcanos; Nitroalkanes; Pastizales; Química del suelo; Regeneración natural; Slash-and-burn agriculture; Van Krevelen 3D diagram; Western Amazon. |
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Thesagro: |
Brachiaria; Cultivo Migratório; Matéria Orgânica; Pastagem; Química do Solo; Regeneração Natural; Sistema de Cultivo; Solo. |
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Thesaurus Nal: |
Acrisols; Human settlements; Natural regeneration; Pastures; Shifting cultivation; Soil chemistry; Soil organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1151856/1/27424.pdf
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Marc: |
LEADER 03468naa a2200673 a 4500
001 2151856
005 2023-05-17
008 2023 bl uuuu u00u1 u #d
022 $a1661-7827 (impresso) / 1660-4601 (online)
024 7 $ahttps://doi.org/10.3390/ijerph20043485$2DOI
100 1 $aLEAL, O. dos A.
245 $aSoil organic matter molecular composition shifts driven by forest regrowth or pasture after slash-and-burn of Amazon Forest.$h[electronic resource]
260 $c2023
520 $aSlash-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.
650 $aAcrisols
650 $aHuman settlements
650 $aNatural regeneration
650 $aPastures
650 $aShifting cultivation
650 $aSoil chemistry
650 $aSoil organic matter
650 $aBrachiaria
650 $aCultivo Migratório
650 $aMatéria Orgânica
650 $aPastagem
650 $aQuímica do Solo
650 $aRegeneração Natural
650 $aSistema de Cultivo
650 $aSolo
653 $aAcre
653 $aAcrisoles
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aAnalytical pyrolysis
653 $aAsentamiento humano
653 $aAssentamento Santa Luzia (AC)
653 $aComposição molecular
653 $aComposición molecular
653 $aCruzeiro do Sul (AC)
653 $aDerruba-e-queima
653 $aMateria orgánica del suelo
653 $aMolecular composition
653 $aNitroalcanos
653 $aNitroalkanes
653 $aPastizales
653 $aQuímica del suelo
653 $aRegeneración natural
653 $aSlash-and-burn agriculture
653 $aVan Krevelen 3D diagram
653 $aWestern Amazon
700 1 $aJIMÉNEZ-MORILLO, N. T.
700 1 $aGONZÁLEZ-PÉREZ, J. A.
700 1 $aKNICKER, H.
700 1 $aCOSTA, F. de S.
700 1 $aJIMÉNEZ-MORILLO, P. N.
700 1 $aCARVALHO JUNIOR, J. A. de
700 1 $aSANTOS, J. C. dos
700 1 $aDICK, D. P.
773 $tInternational Journal of Environmental Research and Public Health$gv. 20, n. 4, 3485, Feb. 2023.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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| 1. |  | LEAL, O. dos A.; JIMÉNEZ-MORILLO, N. T.; GONZÁLEZ-PÉREZ, J. A.; KNICKER, H.; COSTA, F. de S.; JIMÉNEZ-MORILLO, P. N.; CARVALHO JUNIOR, J. A. de; SANTOS, J. C. dos; DICK, D. P. Soil organic matter molecular composition shifts driven by forest regrowth or pasture after slash-and-burn of Amazon Forest. International Journal of Environmental Research and Public Health, v. 20, n. 4, 3485, Feb. 2023.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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