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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Arroz e Feijão. |
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Data corrente: |
11/06/2014 |
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Data da última atualização: |
19/10/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PERRIN, A.-S.; FUJISAKI, K.; PETITJEAN, C.; SARRAZIN, M.; GODET, M.; GARRIC, B.; HORTH, J.-C.; BALBINO, L. C.; SILVEIRA FILHO, A.; MACHADO, P. L. O. de A.; BROSSARD, M. |
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Afiliação: |
Anne-Sophie Perrin, CETIOM / EPLEFPA; Kenji Fujisaki, CETIOM / EPLEFPA / IRD - UMR 210 Eco&Sols; Caroline Petitjean, Université des Antilles et de la Guyane; Max Sarrazin, IRD - US122; Mathieu Godet, CETIOM / EPLEFPA; Bernard Garric, CETIOM / EPLEFPA; Jean-Claude Horth, CETIOM / EPLEFPA / Chambre d'Agriculture de Guyane; LUIZ CARLOS BALBINO, CPAC; AUSTRELINO SILVEIRA FILHO, CPATU; PEDRO LUIZ OLIVEIRA DE A MACHADO, CNPAF; Michel Brossard, IRD - UMR 210 Eco&Sols. |
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Título: |
Conversion of forest to agriculture in Amazonia with the chop-and-mulch method: Does it improve the soil carbon stock? |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Agriculture, Ecosystems & Environment, v. 184, p. 101-114, Feb. 2014. |
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DOI: |
10.1016/j.agee.2013.11.009 |
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Idioma: |
Inglês |
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Conteúdo: |
Fire-free forest conversion with organic inputs as an alternative to slash-and-burn could improve agro-ecosystem sustainability. We assessed soil carbon mass changes in a sandy-clayey and well-drained soil in French Guiana after forest clearing by the chop-and-mulch method and crop establishment. At the experimental site of Combi, native forest was cut down in October 2008; woody biomass was chopped and incorporated into the top 20 cm of soil. After about one year of legume and grass cover, three forms of land management were compared: grassland (Urochloa ruziziensis), maize/soybean crop rotation with disk tillage and in direct seeding without tillage. There were four replicates. We measured 14.16 kg m-2 of carbon in 2 mm-sieved soil down to 2 m depth for the initial forest. Forest clearing did not induce significant soil compaction; neither did any specific agricultural practice. In converted soils, C stocks were measured in the 0-30 cm layer after each crop for three years. Carbon mass changes for soil fractions <2 mm (soil C stock) and >2 mm (soil C pool) in the 0-5, 5-10, 10-20 and 20-30 cm soil layers were assessed on an equivalent soil mass basis. One year and 1.5 years after deforestation, higher C stocks (+0.64 to 1.16 kg C m-2 yr-1) and C pools (+0.52 to 0.90 kg C m-2 yr-1) were measured in converted soils, compared to those of the forest into the top 30 cm of soil. However, the masses of carbon in these converted soils declined later. The highest rates of carbon decrease were measured between 1.5 and 2 years after forest conversion in the <2 mm soil fraction, from 0.46 kg C m-2 yr-1 (in grassland soils) to 0.71 kg C m-2 yr-1 (in cropland under no tillage). The carbon pool declined during the third year at rates of 0.41 kg C m-2 yr-1 (cropland under disk tillage) to 0.76 kg C m-2 yr-1 (grassland soils). Three years after forest conversion, C masses in the top 30 cm of soils for grassland showed similar values than for forest. In comparison, the carbon stock in cropped soils managed under no tillage in direct seeding (without mulch) was significantly 17% and 16% lower than in forest and grassland soils, respectively. None of the studied agricultural practices succeeded in accumulating carbon from the chopped forest biomass. MenosFire-free forest conversion with organic inputs as an alternative to slash-and-burn could improve agro-ecosystem sustainability. We assessed soil carbon mass changes in a sandy-clayey and well-drained soil in French Guiana after forest clearing by the chop-and-mulch method and crop establishment. At the experimental site of Combi, native forest was cut down in October 2008; woody biomass was chopped and incorporated into the top 20 cm of soil. After about one year of legume and grass cover, three forms of land management were compared: grassland (Urochloa ruziziensis), maize/soybean crop rotation with disk tillage and in direct seeding without tillage. There were four replicates. We measured 14.16 kg m-2 of carbon in 2 mm-sieved soil down to 2 m depth for the initial forest. Forest clearing did not induce significant soil compaction; neither did any specific agricultural practice. In converted soils, C stocks were measured in the 0-30 cm layer after each crop for three years. Carbon mass changes for soil fractions <2 mm (soil C stock) and >2 mm (soil C pool) in the 0-5, 5-10, 10-20 and 20-30 cm soil layers were assessed on an equivalent soil mass basis. One year and 1.5 years after deforestation, higher C stocks (+0.64 to 1.16 kg C m-2 yr-1) and C pools (+0.52 to 0.90 kg C m-2 yr-1) were measured in converted soils, compared to those of the forest into the top 30 cm of soil. However, the masses of carbon in these converted soils declined later. The highest rates of carbon de... Mostrar Tudo |
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Palavras-Chave: |
Guiana Francesa; Sem queima. |
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Thesagro: |
Agricultura; Brachiaria; Carbono; Desmatamento; Plantio direto; Solo. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03285naa a2200361 a 4500
001 1988251
005 2022-10-19
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1016/j.agee.2013.11.009$2DOI
100 1 $aPERRIN, A.-S.
245 $aConversion of forest to agriculture in Amazonia with the chop-and-mulch method$bDoes it improve the soil carbon stock?
260 $c2014
520 $aFire-free forest conversion with organic inputs as an alternative to slash-and-burn could improve agro-ecosystem sustainability. We assessed soil carbon mass changes in a sandy-clayey and well-drained soil in French Guiana after forest clearing by the chop-and-mulch method and crop establishment. At the experimental site of Combi, native forest was cut down in October 2008; woody biomass was chopped and incorporated into the top 20 cm of soil. After about one year of legume and grass cover, three forms of land management were compared: grassland (Urochloa ruziziensis), maize/soybean crop rotation with disk tillage and in direct seeding without tillage. There were four replicates. We measured 14.16 kg m-2 of carbon in 2 mm-sieved soil down to 2 m depth for the initial forest. Forest clearing did not induce significant soil compaction; neither did any specific agricultural practice. In converted soils, C stocks were measured in the 0-30 cm layer after each crop for three years. Carbon mass changes for soil fractions <2 mm (soil C stock) and >2 mm (soil C pool) in the 0-5, 5-10, 10-20 and 20-30 cm soil layers were assessed on an equivalent soil mass basis. One year and 1.5 years after deforestation, higher C stocks (+0.64 to 1.16 kg C m-2 yr-1) and C pools (+0.52 to 0.90 kg C m-2 yr-1) were measured in converted soils, compared to those of the forest into the top 30 cm of soil. However, the masses of carbon in these converted soils declined later. The highest rates of carbon decrease were measured between 1.5 and 2 years after forest conversion in the <2 mm soil fraction, from 0.46 kg C m-2 yr-1 (in grassland soils) to 0.71 kg C m-2 yr-1 (in cropland under no tillage). The carbon pool declined during the third year at rates of 0.41 kg C m-2 yr-1 (cropland under disk tillage) to 0.76 kg C m-2 yr-1 (grassland soils). Three years after forest conversion, C masses in the top 30 cm of soils for grassland showed similar values than for forest. In comparison, the carbon stock in cropped soils managed under no tillage in direct seeding (without mulch) was significantly 17% and 16% lower than in forest and grassland soils, respectively. None of the studied agricultural practices succeeded in accumulating carbon from the chopped forest biomass.
650 $aAmazonia
650 $aAgricultura
650 $aBrachiaria
650 $aCarbono
650 $aDesmatamento
650 $aPlantio direto
650 $aSolo
653 $aGuiana Francesa
653 $aSem queima
700 1 $aFUJISAKI, K.
700 1 $aPETITJEAN, C.
700 1 $aSARRAZIN, M.
700 1 $aGODET, M.
700 1 $aGARRIC, B.
700 1 $aHORTH, J.-C.
700 1 $aBALBINO, L. C.
700 1 $aSILVEIRA FILHO, A.
700 1 $aMACHADO, P. L. O. de A.
700 1 $aBROSSARD, M.
773 $tAgriculture, Ecosystems & Environment$gv. 184, p. 101-114, Feb. 2014.
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Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
25/10/2012 |
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Data da última atualização: |
25/10/2012 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
PINTO, D. M.; MACIEIRA, J. G. B. |
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Afiliação: |
DANIELA MACIEL PINTO, CPAF-RO; JEANA GARCIA BELTRAO MACIEIRA, CPAF-RR. |
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Título: |
Identificação do processo de disseminação da informação na Embrapa: o uso do Google Docs. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: CINFORM - ENCONTRO NACIONAL DE ENSINO E PESQUISA EM INFORMAÇÃO, 10., 2011, Salvador. Anais... [Salvador: UFBA], 2011. |
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Idioma: |
Português |
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Conteúdo: |
Neste trabalho, apresenta-se o uso do Googledocs, especificamente como um survey, aplicado aos profissionais da informação da Empresa Brasileira de Pesquisa Agropecuária (Embrapa). Foi criado um questionário eletrônico composto de 14 questões com o objetivo de conhecer o processo de comunicação de novos materiais adquiridos pelas 40 bibliotecas existentes na empresa, as quais são coordenadas pelo Sistema Embrapa de Bibliotecas (SEB), o questionário eletrônico foi enviado a todos os bibliotecários responsáveis pelas bibliotecas do Sistema. |
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Palavras-Chave: |
Bibliotecas Especializadas; Ferramentas da Web2.0; GoogleDocs; Survey. |
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Thesagro: |
Disseminação Seletiva da Informação. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/68762/1/37708.pdf
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Marc: |
LEADER 01221nam a2200181 a 4500
001 1938002
005 2012-10-25
008 2011 bl uuuu u00u1 u #d
100 1 $aPINTO, D. M.
245 $aIdentificação do processo de disseminação da informação na Embrapa$bo uso do Google Docs.$h[electronic resource]
260 $aIn: CINFORM - ENCONTRO NACIONAL DE ENSINO E PESQUISA EM INFORMAÇÃO, 10., 2011, Salvador. Anais... [Salvador: UFBA]$c2011
520 $aNeste trabalho, apresenta-se o uso do Googledocs, especificamente como um survey, aplicado aos profissionais da informação da Empresa Brasileira de Pesquisa Agropecuária (Embrapa). Foi criado um questionário eletrônico composto de 14 questões com o objetivo de conhecer o processo de comunicação de novos materiais adquiridos pelas 40 bibliotecas existentes na empresa, as quais são coordenadas pelo Sistema Embrapa de Bibliotecas (SEB), o questionário eletrônico foi enviado a todos os bibliotecários responsáveis pelas bibliotecas do Sistema.
650 $aDisseminação Seletiva da Informação
653 $aBibliotecas Especializadas
653 $aFerramentas da Web2.0
653 $aGoogleDocs
653 $aSurvey
700 1 $aMACIEIRA, J. G. B.
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Embrapa Rondônia (CPAF-RO) |
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