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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
19/07/2022 |
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Data da última atualização: |
19/07/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VEECK, G. P.; DALMAGO, G. A.; BREMM, T.; BULIGON, L.; JACQUES, R. J. S.; FERNANDES, J. M. C.; SANTI, A.; VARGAS, P. R.; ROBERTI, D. R. |
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Afiliação: |
GUSTAVO PUJOL VEECK, UFSM; GENEI ANTONIO DALMAGO, CNPT; TIAGO BREMM, UFSM; LIDIANE BULIGON, UFSM; RODRIGO JOSEMAR SEMINOTI JACQUES, UFSM; JOSE MAURICIO CUNHA FERNANDES, CNPT; ANDERSON SANTI, CNPT; PAULO ROBERTO VARGAS, Fazenda Capão Grande; DÉBORA REGINA ROBERTI, UFSM. |
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Título: |
CO2 flux in a wheat-soybean succession in subtropical Brazil: A carbon sink. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Journal of Environmental Quality, 1-17, 2022. |
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DOI: |
https://doi.org/10.1002/jeq2.20362 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The subtropical region of Brazil is home to 33% of the soybean [Glycine max (L.) Merr.] growing area and 90% of the wheat (Tritucum aestivum L.) growing area of this country. A soybean?wheat succession with fallow between crops is used in about 11% of the cultivated area. No study has quantified CO2 fluxes in annual soybean?wheat succession in this region. Hence, this study analyzed the seasonality of CO2 exchange (net ecosystem exchange [NEE]) in a 2015/2016 wheat?soybean succession in a commercial farm located in Carazinho, Rio Grande do Sul State, Brazil. The eddy covariance method was used to estimate the annual C balance of this system. The NEE was partitioned between gross primary productivity and ecosystem respiration to understand the dynamics of these fluxes during a year of wheat?soybean succession. Considering the net ecosystem balance between photosynthesis and respiration during the growing season, both soybean and wheat absorbed CO2 from the atmosphere (NEE wheat: ?347 ± 4 g C m?2; NEE soybean: ?242 ± 3 g C m?2). The fallow periods between growing seasons, however, acted as a source of 156 ± 2 g C m?2, reducing the C absorbed by the crops by 27%. For 1 yr, the net biome productivity was ?50 g C m?2 yr?1. The results obtained here demonstrate that the wheat?soybean succession was a net C sink under these specific climatic conditions and field management practices and that the long fallow period between crops limited the agroecosystem from becoming a more efficient CO2 sink. MenosAbstract: The subtropical region of Brazil is home to 33% of the soybean [Glycine max (L.) Merr.] growing area and 90% of the wheat (Tritucum aestivum L.) growing area of this country. A soybean?wheat succession with fallow between crops is used in about 11% of the cultivated area. No study has quantified CO2 fluxes in annual soybean?wheat succession in this region. Hence, this study analyzed the seasonality of CO2 exchange (net ecosystem exchange [NEE]) in a 2015/2016 wheat?soybean succession in a commercial farm located in Carazinho, Rio Grande do Sul State, Brazil. The eddy covariance method was used to estimate the annual C balance of this system. The NEE was partitioned between gross primary productivity and ecosystem respiration to understand the dynamics of these fluxes during a year of wheat?soybean succession. Considering the net ecosystem balance between photosynthesis and respiration during the growing season, both soybean and wheat absorbed CO2 from the atmosphere (NEE wheat: ?347 ± 4 g C m?2; NEE soybean: ?242 ± 3 g C m?2). The fallow periods between growing seasons, however, acted as a source of 156 ± 2 g C m?2, reducing the C absorbed by the crops by 27%. For 1 yr, the net biome productivity was ?50 g C m?2 yr?1. The results obtained here demonstrate that the wheat?soybean succession was a net C sink under these specific climatic conditions and field management practices and that the long fallow period between crops limited the agroecosystem from becoming a mo... Mostrar Tudo |
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Palavras-Chave: |
Sucessão soja-trigo. |
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Thesagro: |
Cultivo Anual; Manejo do Solo; Pousio; Respiração do Solo; Soja; Trigo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02390naa a2200313 a 4500
001 2144817
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008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1002/jeq2.20362$2DOI
100 1 $aVEECK, G. P.
245 $aCO2 flux in a wheat-soybean succession in subtropical Brazil$bA carbon sink.$h[electronic resource]
260 $c2022
520 $aAbstract: The subtropical region of Brazil is home to 33% of the soybean [Glycine max (L.) Merr.] growing area and 90% of the wheat (Tritucum aestivum L.) growing area of this country. A soybean?wheat succession with fallow between crops is used in about 11% of the cultivated area. No study has quantified CO2 fluxes in annual soybean?wheat succession in this region. Hence, this study analyzed the seasonality of CO2 exchange (net ecosystem exchange [NEE]) in a 2015/2016 wheat?soybean succession in a commercial farm located in Carazinho, Rio Grande do Sul State, Brazil. The eddy covariance method was used to estimate the annual C balance of this system. The NEE was partitioned between gross primary productivity and ecosystem respiration to understand the dynamics of these fluxes during a year of wheat?soybean succession. Considering the net ecosystem balance between photosynthesis and respiration during the growing season, both soybean and wheat absorbed CO2 from the atmosphere (NEE wheat: ?347 ± 4 g C m?2; NEE soybean: ?242 ± 3 g C m?2). The fallow periods between growing seasons, however, acted as a source of 156 ± 2 g C m?2, reducing the C absorbed by the crops by 27%. For 1 yr, the net biome productivity was ?50 g C m?2 yr?1. The results obtained here demonstrate that the wheat?soybean succession was a net C sink under these specific climatic conditions and field management practices and that the long fallow period between crops limited the agroecosystem from becoming a more efficient CO2 sink.
650 $aCultivo Anual
650 $aManejo do Solo
650 $aPousio
650 $aRespiração do Solo
650 $aSoja
650 $aTrigo
653 $aSucessão soja-trigo
700 1 $aDALMAGO, G. A.
700 1 $aBREMM, T.
700 1 $aBULIGON, L.
700 1 $aJACQUES, R. J. S.
700 1 $aFERNANDES, J. M. C.
700 1 $aSANTI, A.
700 1 $aVARGAS, P. R.
700 1 $aROBERTI, D. R.
773 $tJournal of Environmental Quality, 1-17, 2022.
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Embrapa Trigo (CNPT) |
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| Registros recuperados : 9 | |
| 3. |  | VARGAS, P. R.; FERNANDES, J. M.; PICININI, E. C. Simulação de epidemia de giberela. In: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 32., 1999, Curitiba. Fitopatologia Brasileira, Brasília, DF, v. 24, p. 340, ago. 1999. Suplemento. Resumo 559.| Biblioteca(s): Embrapa Trigo. |
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| 5. | | SCHIRMBECK, L. W.; FONTANA, D. C.; DALMAGO, G. A.; SCHIRMBECK, J.; VARGAS, P. R. Condições hídricas de lavoura de soja usando sensoriamento remoto terrestre. Congresso Brasileiro de Agrometeorologia, 21, 2019, Catalão, GO. Anais.... Catalão, GO: UFG/SBAGRO, 2019. v. 1. p. 221-231..| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Trigo. |
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| 6. | | DALMAGO, G. A.; CUNHA, G. R. da; FERNANDES, J. M. C.; VARGAS, P. R.; SANTI, A. Temperatura mínima do ar em trigo - estudo de caso em noites de geada. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 20.; SIMPÓSIO DE MUDANÇAS CLIMÁTICAS E DESERTIFICAÇÃO DO SEMIÁRIDO BRASILEIRO, 5., 2017, Juazeiro, Petrolina. A agrometeorologia na solução de problemas multiescala: anais. Juazeiro: Univasf; Petrolina: Embrapa Semiárido, 2017. Micrometeorologia, MM-398, 5 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Trigo. |
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| 7. | | ACHAPARINI, L. P.; FONTANA, D. C.; DALMAGO, G. A.; RODIGHERI, G.; FERNANDES, J. M. C.; SANTI, A.; VARGAS, P. R. Analise comparativa entre índices de vegetação e sua relação com o balanço hídrico em soja. Agrometeoros, v. 27, p. 183-190, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: C - 0 |
| Biblioteca(s): Embrapa Trigo. |
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| 9. | | VEECK, G. P.; DALMAGO, G. A.; BREMM, T.; BULIGON, L.; JACQUES, R. J. S.; FERNANDES, J. M. C.; SANTI, A.; VARGAS, P. R.; ROBERTI, D. R. CO2 flux in a wheat-soybean succession in subtropical Brazil: A carbon sink. Journal of Environmental Quality, 1-17, 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Trigo. |
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| Registros recuperados : 9 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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