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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
05/01/2017 |
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Data da última atualização: |
08/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ARAUJO, J. K. S.; SOUZA JÚNIOR, V. S. de; MARQUES, F. A.; VORONEY, P.; SOUZA, R. A. da S. |
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Afiliação: |
JANE KELLY SILVA ARAUJO, UFRPE; VALDOMIRO SEVERINO DE SOUZA JÚNIOR, UFRPE; FLAVIO ADRIANO MARQUES, CNPS; PAUL VORONEY, School of Environmental Sciences, University of Guelph; REGILENE ANGELICA DA SILVA SOUZA, UFRA. |
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Título: |
Assessment of carbon storage under rainforests in Humic Hapludox along a climosequence extending from the Atlantic coast to the highlands of northeastern Brazil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Science of The Total Environment, v. 568, p. 339-349, Oct. 2016. |
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DOI: |
https://doi.org/10.1016/j.scitotenv.2016.06.025 |
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Idioma: |
Inglês |
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Conteúdo: |
An understanding of the stock of soil organic carbon (SOC) in the umbric epipedon of Oxisols located in the tropical forests surrounded by a semi-arid region is limited but essential because of their importance in the global cycle of carbon (C). The purpose of this study was to assess the effects of climatic (temperature and rainfall), soil organic matter (SOM) composition and litter on the stability of C in surfaces and subsurfaces in five Humic Oxisols along a 475-km climo sequence from 143 to 963m a.s.l. in a tropical environment in northeastern Brazil. Weassessed vertical changes in SOC; soil total nitrogen (N); C from the microbial biomass; 13C, 15N and the humified composition of SOM; the composition of the humin (HUM) fraction by Fourier Transform Infrared (FTIR); and Thermogravimetry (TG) and Differential Scanning Calorimetry (DSC) at depth. The elemental and isotopic composition of the litter samples were analyzed in all areas studied. The results indicated that the current climate and recalcitrant organic compounds are not preponderant factors in the formation of the umbric epipedon, as suggested by the partial influence of temperature and rainfall on SOM. In addition, SOM was dominated by easily decomposable compounds, as indicated by the predominance of aliphatic C-H groups in the HUM fraction in the FTIR spectra; by the thermal oxidation through DSC-TG, which revealed that approximately 50% of the HUM was composed easily decomposable compounds; and by the high proportion of organic C present in the microbial biomass. Values of 13C showed a predominance of C3 plant-C in SOM where as 15N patterns indicated that N dynamics differ among the profiles and drive the accumulation of C. These findings can help to characterize the susceptibility of these soils to changes in climate and land use and the implications for the sequestration of soil C. MenosAn understanding of the stock of soil organic carbon (SOC) in the umbric epipedon of Oxisols located in the tropical forests surrounded by a semi-arid region is limited but essential because of their importance in the global cycle of carbon (C). The purpose of this study was to assess the effects of climatic (temperature and rainfall), soil organic matter (SOM) composition and litter on the stability of C in surfaces and subsurfaces in five Humic Oxisols along a 475-km climo sequence from 143 to 963m a.s.l. in a tropical environment in northeastern Brazil. Weassessed vertical changes in SOC; soil total nitrogen (N); C from the microbial biomass; 13C, 15N and the humified composition of SOM; the composition of the humin (HUM) fraction by Fourier Transform Infrared (FTIR); and Thermogravimetry (TG) and Differential Scanning Calorimetry (DSC) at depth. The elemental and isotopic composition of the litter samples were analyzed in all areas studied. The results indicated that the current climate and recalcitrant organic compounds are not preponderant factors in the formation of the umbric epipedon, as suggested by the partial influence of temperature and rainfall on SOM. In addition, SOM was dominated by easily decomposable compounds, as indicated by the predominance of aliphatic C-H groups in the HUM fraction in the FTIR spectra; by the thermal oxidation through DSC-TG, which revealed that approximately 50% of the HUM was composed easily decomposable compounds; and by the high p... Mostrar Tudo |
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Palavras-Chave: |
Biomassa microbiana; Carbono profundo; FTIR; Lixo; Nitrogênio do solo; Semiárido. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
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Registro original: |
Embrapa Solos (CNPS) |
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| 2. |  | RODRIGUES, R. P.; GONÇALVES, D. de A.; SILVA, A. R.; MARTINS, W. B. R.; DIONISIO, L. F. S.; SCHWARTZ, G. Crescimento e mortalidade de Tachigali vulgaris L.G.Silva & H.C.Lima em diferentes espaçamentos de plantio para a produção de biomassa. Scientia Forestalis, v. 48, n. 128, e3269, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 3. | | DIONISIO, L. F. S.; AUCA, E. C.; BARDALES-LOZANO, R. M.; SCHWARTZ, G.; RODRIGUES. R. P.; CORVERA-GOMRINGER, R. Production of Bertholletia excelsa Humb. & Bonpl., (Lecythidaceae) seedlings in microenvironments under different substrates. Revista Brasileira de Ciências Agrárias, v. 14, n. 3, e5847, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 4. | | SILVA-FILHO, O. F.; PESSOA, G. T.; SOUSA, F. C. A.; RODRIGUES, R. P. S.; MOURA, L. S.; AMBRÓSIO, C. E.; SILVA, A. B. S.; ALVES, F. R. Assessment of the vertebral heart scale and cardiothoracic ratio to standardize the heart size of collared peccaries (Tayassu tajacu Linnaeus, 1758) restrained with ketamine and midazolam. Pesquisa Veterinária Brasileira, Brasília, DF, v. 38, n 8, p. 1705-1711, agosto 2018 Título em português: Avaliação do vertebral heart scale e índice cardiotorácico na padronização do tamanho cardíaco de cateto (Tayassu tajacu Linnaeus, 1758) contidos com cetamina e midazolam.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 5. | | PESSOA, G. T.; SOUSA, F. C. A.; RODRIGUES, R. P. S.; MOURA, L. S.; SANCHES, M. P.; AMBRÓSIO, C. E.; SILVA, A. B. S.; ALVES, F. R. Abdominal B-mode and Doppler ultrasonography of chemically restrained agouti (Dasyprocta prymnolopha Wagler, 1831). Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 38, n. 4, p. 785-793, abril 2018 Título em português: Ultrassonografia abdominal em Modo B e Doppler de cutias (Dasyprocta prymnolopha Wagler, 1831) contidas quimicamente.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 6. | | SILVA, E. G.; PESSOA, G. T.; MOURA, L. S.; GUERRA, P. C.; RODRIGUES, R. P. S.; SOUSA, F. C. A.; AMBRÓSIO, C. E.; ALVES, F. R. Biometric, B-mode and color Doppler ultrasound assessment of eyes in healthy dogs. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 38, n. 3, p. 565-571, março, 2018 Título em português: Avaliação biométrica, ultrassonográfica em modo-B e por Doppler colorido ocular de cães hígidos.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 7. | | ROCHA-NETO, H. J.; MOURA, L. da S.; PESSOA, G. T.; AMBRÓSIO, C. E.; SOUSA, F. C. A.; RODRIGUES, R. P. S.; GUERRA, P. C.; ALVES, F. R. Cardiothoracic ratio and vertebral heart size (VHS) to standardize the heart size of the tufted capuchin (Cebus apella Linnaeus, 1758) in computerized radiographic images. Pesquisa Veterinária Brasileira, Brasília, DF, v. 35, n. 10, p. 853-858, out. 2015.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 7 | |
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