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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. |
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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: |
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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Registro original: |
Embrapa Solos (CNPS) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
30/11/2000 |
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Data da última atualização: |
31/03/2017 |
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Autoria: |
SERENO, J. R. B.; PELLEGRIN, A. O.; LARA, M. A. C.; ABREU, U. G. P. de; SERENO, F. T. P. S.; CHALITA, L. V. A. S. |
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Afiliação: |
Embrapa Pantanal (Corumba, MS); Agencia Espanhola de Cooperacion Internacional (AECI); Instituto de Zootecnia (Nova Odessa, SP); Universidad de Cordoba (Espanha); UNESP-IB (Botucatu, SP). |
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Título: |
Study of age and weight at first breeding of pantaneira, nelore and 1/2 pantaneira x nelore heifers in the Brazilian Pantanal. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: GLOBAL CONFERENCE ON CONSERVATION OF DOMESTIC ANIMAL GENETIC RESOURCES, 5., 2000, Brasilia. Proceedings... Brasilia: Embrapa Genetic Resources and Biotechnology, 2000. CD-ROM. (Embrapa Genetic Resources and Biotechnology. Document, 49). |
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Páginas: |
(P-82). |
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Idioma: |
Inglês |
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Conteúdo: |
The Pantanal is considered to be one of the largest Brazilian regions (114 million km2) of beef-cattle cow-calf production, where the activity is extensively developed on native pastures with a stocking rate of 0.27 AU/ha. The beef cattle exploitation is of fundamental importance to the development and conservation of the Pantanal ecosystem, since it represents the main income of the local producers, who practice, in their great majority, ecological meat production. This practice utilizers in a rational manner the natural resources of the region to produce meat free of chemical additives, known as green meat, produced exclusively on natural pastures. The objetive of this study was to estimate the age and weight at first breeding of yearling heifers of the breeds Pantaneira (P), Nelore (N) and 1/2 Pantaneira x Nelore (PxN). |
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Palavras-Chave: |
Bovine. |
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Thesagro: |
Criação; Recurso Genético; Reprodução Animal. |
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Thesaurus NAL: |
animal genetic resources; animal reproduction; breeding season; Pantanal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01876naa a2200289 a 4500
001 1804366
005 2017-03-31
008 2000 bl --- 0-- u #d
100 1 $aSERENO, J. R. B.
245 $aStudy of age and weight at first breeding of pantaneira, nelore and 1/2 pantaneira x nelore heifers in the Brazilian Pantanal.
260 $c2000
300 $a(P-82).
520 $aThe Pantanal is considered to be one of the largest Brazilian regions (114 million km2) of beef-cattle cow-calf production, where the activity is extensively developed on native pastures with a stocking rate of 0.27 AU/ha. The beef cattle exploitation is of fundamental importance to the development and conservation of the Pantanal ecosystem, since it represents the main income of the local producers, who practice, in their great majority, ecological meat production. This practice utilizers in a rational manner the natural resources of the region to produce meat free of chemical additives, known as green meat, produced exclusively on natural pastures. The objetive of this study was to estimate the age and weight at first breeding of yearling heifers of the breeds Pantaneira (P), Nelore (N) and 1/2 Pantaneira x Nelore (PxN).
650 $aanimal genetic resources
650 $aanimal reproduction
650 $abreeding season
650 $aPantanal
650 $aCriação
650 $aRecurso Genético
650 $aReprodução Animal
653 $aBovine
700 1 $aPELLEGRIN, A. O.
700 1 $aLARA, M. A. C.
700 1 $aABREU, U. G. P. de
700 1 $aSERENO, F. T. P. S.
700 1 $aCHALITA, L. V. A. S.
773 $tIn: GLOBAL CONFERENCE ON CONSERVATION OF DOMESTIC ANIMAL GENETIC RESOURCES, 5., 2000, Brasilia. Proceedings... Brasilia: Embrapa Genetic Resources and Biotechnology, 2000. CD-ROM. (Embrapa Genetic Resources and Biotechnology. Document, 49).
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