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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
11/02/2015 |
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Data da última atualização: |
11/02/2015 |
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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; KENJI FUJISAKI, CETIOM; CAROLINE PETITJEAN, UNIVERSITÉ DES ANTILLES ET DE LA GUYANE; MAX SARRAZIN, IRD; MATHIEU GODET, CETIOM; BERNARD GARRIC, CETIOM; JEAN-CLAUDE HORTH, CETIOM; LUIZ CARLOS BALBINO, CPAC; AUSTRELINO SILVEIRA FILHO, CPATU; PEDRO LUIZ OLIVEIRA DE A MACHADO, CNPAF; MICHEL BROSSARD, IRD. |
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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, Amsterdam, 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: |
Abstract: 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. MenosAbstract: 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... Mostrar Tudo |
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Palavras-Chave: |
Guiana Francesa; Sem queima. |
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Thesagro: |
Brachiaria; Carbono; Desmatamento; Plantio direto; Solo. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03278naa a2200349 a 4500
001 2008506
005 2015-02-11
008 2014 bl --- 0-- 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 $aAbstract: 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.
650 $aAmazonia
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 $tAgriculture, Ecosystems & Environment, Amsterdam$gv. 184, p. 101-114, Feb. 2014.
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Embrapa Cerrados (CPAC) |
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| Registros recuperados : 2 | |
| 1. |  | 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. Conversion of forest to agriculture in Amazonia with the chop-and-mulch method: Does it improve the soil carbon stock? Agriculture, Ecosystems & Environment, v. 184, p. 101-114, Feb. 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Arroz e Feijão. |
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| 2. | | 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. Conversion of forest to agriculture in Amazonia with the chop-and-mulch method: Does it improve the soil carbon stock? Agriculture, Ecosystems & Environment, Amsterdam, v. 184, p. 101-114, Feb. 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 2 | |
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