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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
24/07/2017 |
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Data da última atualização: |
04/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TONUCCI, R. G.; NAIR, V. D.; NAIR, P. K. R.; GARCIA. R. |
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Afiliação: |
RAFAEL GONCALVES TONUCCI, CNPC; Vimala D. Nair, Soil and Water Sciences Department, University of Florida, Gainesville, FL, USA; P. K. Ramachandran Nair, Soil and Water Sciences Department, University of Florida, Gainesville, FL, USA; Rasmo Garcia, Animal Science Department Federal University of Viçosa (UFV) - Viçosa, MG, Brazil. |
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Título: |
Grass vs. tree origin of soil organic carbon under different land-use systems in the Brazilian Cerrado. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Plant and Soil, v. 416, p. 1-12, 2017. Online first 21 July 2017. |
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DOI: |
10.1007/s11104-017-3347-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Background and Aims: Silvopastoral management of tree plantations is becoming popular in Brazil. The impact of this practice on carbon dynamics of these soils is unknown, and predicting it is difficult because historical land-use records of the region do not exist. The objective of the study was to quantify the relative soil organic carbon (SOC) contributions of C3 and C4 plants in different land-use system. Methods - We evaluated total delta13C, the contribution of C4 and C3-derived soil organic C in three fraction-size classes of soils in six land-use systems (Eucalyptus hybrid plantations established in 1985 and 2005; a native forest; silvopasture stands of Brachiaria brizantha under eucalyptus established in 1994 and 2004; and an open pasture), and undertook carbon dating (14C) for three of those systems, an Oxisol in Minas Gerais, Brazil. From each system, soil samples were collected from four depths (0-10, 10-20, 20-50, and 50-100 cm); samples were fractionated into 250-2000, 53-250, and <53 µm size classes, and their delta13C determined. Carbon dating (14C analysis) was done for whole soil samples from 0 to 10 cm and 50-100 cm depth classes of three land-use systems. Results - The delta13C values increased (showing increase in C contribution by C4 plants, i.e., grasses) with soil depth at all sites and all size-classes. The older systems showed a higher contribution of C4-derived SOC at all depths. Carbon dating indicated that the area had been cleared about 300 years ago. Conclusions - Silvopastoral and pasture systems can be considered as good carbon sinks. We infer that the study site was grassland with high proportion of C4 plants in the past, not a forest as it is today. MenosAbstract: Background and Aims: Silvopastoral management of tree plantations is becoming popular in Brazil. The impact of this practice on carbon dynamics of these soils is unknown, and predicting it is difficult because historical land-use records of the region do not exist. The objective of the study was to quantify the relative soil organic carbon (SOC) contributions of C3 and C4 plants in different land-use system. Methods - We evaluated total delta13C, the contribution of C4 and C3-derived soil organic C in three fraction-size classes of soils in six land-use systems (Eucalyptus hybrid plantations established in 1985 and 2005; a native forest; silvopasture stands of Brachiaria brizantha under eucalyptus established in 1994 and 2004; and an open pasture), and undertook carbon dating (14C) for three of those systems, an Oxisol in Minas Gerais, Brazil. From each system, soil samples were collected from four depths (0-10, 10-20, 20-50, and 50-100 cm); samples were fractionated into 250-2000, 53-250, and <53 µm size classes, and their delta13C determined. Carbon dating (14C analysis) was done for whole soil samples from 0 to 10 cm and 50-100 cm depth classes of three land-use systems. Results - The delta13C values increased (showing increase in C contribution by C4 plants, i.e., grasses) with soil depth at all sites and all size-classes. The older systems showed a higher contribution of C4-derived SOC at all depths. Carbon dating indicated that the area had been cleared about... Mostrar Tudo |
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Palavras-Chave: |
Agroforestry systems; Carbon dating; Sistema silvopastoril; Sistemas agroflorestais; Soil fractionation; Stable isotope ratio analysis. |
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Thesagro: |
Brachiaria Brizantha; Carbono; Cerrado; Eucalyptus spp; Fracionamento; Matéria orgânica; Solo. |
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Thesaurus Nal: |
Agroforestry; Brazil; Grassland soils; Silvopastoral systems; Soil chemistry. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02854naa a2200385 a 4500
001 2073043
005 2017-12-04
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1007/s11104-017-3347-1$2DOI
100 1 $aTONUCCI, R. G.
245 $aGrass vs. tree origin of soil organic carbon under different land-use systems in the Brazilian Cerrado.$h[electronic resource]
260 $c2017
520 $aAbstract: Background and Aims: Silvopastoral management of tree plantations is becoming popular in Brazil. The impact of this practice on carbon dynamics of these soils is unknown, and predicting it is difficult because historical land-use records of the region do not exist. The objective of the study was to quantify the relative soil organic carbon (SOC) contributions of C3 and C4 plants in different land-use system. Methods - We evaluated total delta13C, the contribution of C4 and C3-derived soil organic C in three fraction-size classes of soils in six land-use systems (Eucalyptus hybrid plantations established in 1985 and 2005; a native forest; silvopasture stands of Brachiaria brizantha under eucalyptus established in 1994 and 2004; and an open pasture), and undertook carbon dating (14C) for three of those systems, an Oxisol in Minas Gerais, Brazil. From each system, soil samples were collected from four depths (0-10, 10-20, 20-50, and 50-100 cm); samples were fractionated into 250-2000, 53-250, and <53 µm size classes, and their delta13C determined. Carbon dating (14C analysis) was done for whole soil samples from 0 to 10 cm and 50-100 cm depth classes of three land-use systems. Results - The delta13C values increased (showing increase in C contribution by C4 plants, i.e., grasses) with soil depth at all sites and all size-classes. The older systems showed a higher contribution of C4-derived SOC at all depths. Carbon dating indicated that the area had been cleared about 300 years ago. Conclusions - Silvopastoral and pasture systems can be considered as good carbon sinks. We infer that the study site was grassland with high proportion of C4 plants in the past, not a forest as it is today.
650 $aAgroforestry
650 $aBrazil
650 $aGrassland soils
650 $aSilvopastoral systems
650 $aSoil chemistry
650 $aBrachiaria Brizantha
650 $aCarbono
650 $aCerrado
650 $aEucalyptus spp
650 $aFracionamento
650 $aMatéria orgânica
650 $aSolo
653 $aAgroforestry systems
653 $aCarbon dating
653 $aSistema silvopastoril
653 $aSistemas agroflorestais
653 $aSoil fractionation
653 $aStable isotope ratio analysis
700 1 $aNAIR, V. D.
700 1 $aNAIR, P. K. R.
700 1 $aGARCIA. R.
773 $tPlant and Soil$gv. 416, p. 1-12, 2017. Online first 21 July 2017.
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Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 33 | |
| 2. |  | KIST, H.; MANICA, I. Densidades de plantio, crescimento e produção do mamoeiro formosa (Carica papaya L.) em Porto Lucena, RS. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 30, n. 5, p. 657-666, maio 1995. Título em inglês: Planting density, growth and production of the papaya 'formosa' (Caricica papaya L.) at Porto Lucena, RS.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 6. | | COLAUTO, N. M.; MANICA, I.; RIBOLDI, J. MIELNICZUK, J. Efeito do nitrogenio, fosforo e potassio, sobre a producao, qualidade e estado nutricional do maracujazeiro amarelo. Pesquisa Agropecuaria Brasileira, Brasilia, v.21, n.7, p.691-695, jul. 1986.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 10. | | PAIVA, M. C.; MANICA, I.; FIORAVANCO, J. C. Competição entre quatro cultivares e três seleções de goiabeira em Eldorado do Sul, RS. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 29, n. 6, p. 917-922, jun. 1994. Título em inglês: Competition among four guava cultivars and three selection in Eldorado do Sul, RS.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 11. | | KIST, H.; FELDENS, A. M.; MANICA, I.; FIORAVANÇO, J. C. Análise econômica de densidades de plantio do maracujá-amarelo no município de Porto Lucena, RS. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 31, n. 7, p. 497-502, jul. 1996. Título em inglês: Economic analysis of yellow passion fruit planting densities in Porto Lucena count, Brazil.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 13. | | MANICA, I.; FIORAVANÇO, J. C.; BARRADAS, C. I. N.; KIST, H.; VIONE, G. F. Indução do florescimento e produção do abacaxizeiro cv. Smooth Cayenne. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 29, n. 1, p. 81-86, jan. 1994. Título em inglês: Flowering induction and yield of pineapple cv. Smooth cayenne.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 15. | | FARIA, J. L. C.; COLAUTO, N. M.; MANICA, I; STRONSKI, M. dos S.; APPEL, H. B. Efecto de Tres Dosis de N,P Y K En la Producción de Maracuya Amarillo (Passiflora Edulis Sims F. Flavicarpa Deg). Pesquisa Agropecuaria Brasileira, Brasilia, v.26, n.3, p.311-314, mar.1991| Biblioteca(s): Embrapa Unidades Centrais. |
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| 16. | | MANICA, I.; CARVALHO, R. I. N. de; KIST, H.; VIONE, G. F.; BARRADAS, C. I. N. Efeito de épocas de seleção do rebento no ciclo e na produção de plantas-mães da bananeira (Musa acuminata) cultivar mysore em Porto Lucena, RS. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 30, n. 6, p. 825-829, jun. 1995. Título em inglês: Effect of selection time of suckers on the cycle and production of mother plants of banana (Musa acuminata) cv. mysore in Porto Lucena, RS.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 18. | | MANICA, I.; FIORAVANÇO, J. C.; BARRADAS, C. I. N.; KIST, H. Seis espaçamentos de plantio e produção do maracujazeiro-amarelo (Passiflora edulis f. flavicarpa Deg.) em Porto Lucena, RS. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 29, n. 7, p. 1083-1090. jul. 1994. Título em inglês: Six plant spacings and yield of the yellow passion fruit (Passiflora edulis f. flavicarpa Deg.) in Porto Lucena, RS, Brazil.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 19. | | MÂNICA, I.; PASSOS, L. P.; LUCHI, V. L.; DEFELIPO, B. V.; CONDE, A. R. efeito de três doses de cloreto e sulfato de potássio na concentração de macro-nutrientes nas folhas do abacaxizeiro (ananas comosus (L.) Merril.) cultivar Smooth Cayenne em Visconde do Rio Branco, Minas Gerais, Brasil. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 7., 1984, Florianópolis. Anais.... Florianópolis: Sociedade Brasileira de Fruticultura; EMPASC, 1984.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Uva e Vinho. |
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| 20. | | MANICA, I.; FIORAVACO, J. C.; BARRADAS, C. I. N.; KIST, H. G. K.; KIST, H. Efeito de seis espaçamentos de plantio em 4 anos de produção do maracujazeiro-amarelo em Porto Lucena, RS. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 29, n. 11, p. 1715-1722, nov. 1994. Título em inglês: Effect of six plant spacings four-year production of the yellow passion fruit in Porto Lucena, RS, Brazil.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 33 | |
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