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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
02/12/2020 |
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Data da última atualização: |
11/01/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
JAROSCH, K.; HURTARTE, L. C. C.; GAVAZOV, K.; MUNIZ, A. W.; MÜLLER, C.; SCHWEIZER, S. |
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Afiliação: |
Klaus Jarosch, University of Bern; Luis Carlos Colocho Hurtarte, Technical University of Munich; Konstantin Gavazov, Swiss Federal Institute for Forest; ALEKSANDER WESTPHAL MUNIZ, CPAA; Christoph Müller, Justus-Liebig University Giessen; Steffen Schweizer, Technical University of Munich. |
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Título: |
Land use change in Amazonian Dark Earth and Acrisol: responses of organic carbon, organic matter composition and microbial carbon utilisation. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
In: EGU GENERAL ASSEMBLY, 2020, Vienna, Austria. Abstracts... Vienna, EGU, 2020. |
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DOI: |
https://doi.org/10.5194/egusphere-egu2020-19752 |
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Idioma: |
Inglês |
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Conteúdo: |
The conversion of tropical forest for cassava cultivation is widely known to decrease the soil organic matter (OM) and nutrient contents of highly weathered soils in the tropics. Amazonian Dark Earth (ADE) might be affected less due to their historical anthropogenic amelioration with e.g. charcoal, ceramics and bones, leading to higher soil OM and nutrient concentrations. In this study, we analysed the effect of land use change on the OM dynamics and its composition under tropical conditions, using ADE and an adjacent Acrisol (ACR) as model systems. |
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Palavras-Chave: |
Terra Preta de Índio. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/218592/1/EGU2020-19752-print.pdf
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Marc: |
LEADER 01257nam a2200193 a 4500
001 2127465
005 2021-01-11
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5194/egusphere-egu2020-19752$2DOI
100 1 $aJAROSCH, K.
245 $aLand use change in Amazonian Dark Earth and Acrisol$bresponses of organic carbon, organic matter composition and microbial carbon utilisation.$h[electronic resource]
260 $aIn: EGU GENERAL ASSEMBLY, 2020, Vienna, Austria. Abstracts... Vienna, EGU$c2020
520 $aThe conversion of tropical forest for cassava cultivation is widely known to decrease the soil organic matter (OM) and nutrient contents of highly weathered soils in the tropics. Amazonian Dark Earth (ADE) might be affected less due to their historical anthropogenic amelioration with e.g. charcoal, ceramics and bones, leading to higher soil OM and nutrient concentrations. In this study, we analysed the effect of land use change on the OM dynamics and its composition under tropical conditions, using ADE and an adjacent Acrisol (ACR) as model systems.
653 $aTerra Preta de Índio
700 1 $aHURTARTE, L. C. C.
700 1 $aGAVAZOV, K.
700 1 $aMUNIZ, A. W.
700 1 $aMÜLLER, C.
700 1 $aSCHWEIZER, S.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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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Circulação/Nível: |
A - 1 |
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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: |
LEADER 02734naa a2200253 a 4500
001 2059966
005 2021-10-08
008 2016 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scitotenv.2016.06.025$2DOI
100 1 $aARAUJO, J. K. S.
245 $aAssessment of carbon storage under rainforests in Humic Hapludox along a climosequence extending from the Atlantic coast to the highlands of northeastern Brazil.$h[electronic resource]
260 $c2016
520 $aAn 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.
653 $aBiomassa microbiana
653 $aCarbono profundo
653 $aFTIR
653 $aLixo
653 $aNitrogênio do solo
653 $aSemiárido
700 1 $aSOUZA JÚNIOR, V. S. de
700 1 $aMARQUES, F. A.
700 1 $aVORONEY, P.
700 1 $aSOUZA, R. A. da S.
773 $tScience of The Total Environment$gv. 568, p. 339-349, Oct. 2016.
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