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| BORDONAL, R. DE O.; LAL, R.; RONQUIM, C. C.; FIGUEIREDO, E. B. DE; CARVALHO, J. L. N.; MALDONADO JUNIOR, W.; MILORI, D. M. B. P.; LA SCALA JUNIOR. |
| Soil organic carbon (SOC) plays an important role for soil quality and its conservation is affected by the land-use change (LUC) associated with sugarcane (Saccharum officinarum) expansion. This study was based on the hypothesis that: (i) LUC from perennial crops (e.g., coffee and citrus) and extensive pasture to sugarcane plantation results in depletions of soil carbon (C) stock and its quality; and (ii) transition of annual crops to sugarcane increases soil C stock and improves its quality. Therefore, the objective of this study was to assess changes in soil C stocks and the humification levels of soil organic matter (SOM) upon conversion of different land uses (coffee, citrus, annual crop and pasture) into sugarcane plantation in the Mococa region,... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Sugarcane expansion; Laser-induced fluorescence spectroscopy; Sustainability; Espectroscopia de fluorescência induzida por laser; Sustentabilidade; Cana de açúcar; Etanol; Manejo do solo; Matéria orgânica; Ethanol production; Soil management; Soil organic matter; Fluorescence emission spectroscopy. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1065652 |
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| FREITAS, R. de C. A. de; POPIN, G. V.; MILORI, D. M. B. P.; SIGNOR, D.; DRUMOND, M. A.; CERRI, C. E. P.. |
| The substitution of native vegetation by agricultural ecosystems can change the quantity and quality of soil organic matter (SOM), and the intensity of these changes depends on the soil type, climate, and land use. The objective of this study was to evaluate the quality of organic matter in chronosequences of Jatropha cultivation in contrasting soil and climatic conditions. Soil samples were evaluated at depths of 0.00-0.10, 0.20-0.30, and 0.80-1.00 m in chronosequences located in Planaltina, Distrito Federal (Cerrado-Pasture-Jatropha), Dourados, Mato Grosso do Sul (Atlantic Forest-Corn-Jatropha), and Araripina, Pernambuco (Caatinga-Jatropha). To assess SOM quality, we determined C contents in the SOM fractions, C stocks, the carbon management index (CMI),... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Matéria orgânica; Massa microbiana; Mudança de uso da terra; Fracionamento de carbono do solo; Espectroscopia de fluorescência; Solo; Carbono; Vegetação nativa; Soil; Land use change; Soil carbon fractionation; Carbon management index; Laser-induced fluorescence spectroscopy; Microbial biomass. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1068272 |
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| Freitas,Rita de Cássia Alves de; Popin,Gustavo Vicentini; Milori,Débora Marcondes Bastos Pereira; Signor,Diana; Drumond,Marcos Antônio; Cerri,Carlos Eduardo Pellegrino. |
| ABSTRACT The substitution of native vegetation by agricultural ecosystems can change the quantity and quality of soil organic matter (SOM), and the intensity of these changes depends on the soil type, climate, and land use. The objective of this study was to evaluate the quality of organic matter in chronosequences of Jatropha cultivation in contrasting soil and climatic conditions. Soil samples were evaluated at depths of 0.00-0.10, 0.20-0.30, and 0.80-1.00 m in chronosequences located in Planaltina, Distrito Federal (Cerrado-Pasture-Jatropha), Dourados, Mato Grosso do Sul (Atlantic Forest-Corn-Jatropha), and Araripina, Pernambuco (Caatinga-Jatropha). To assess SOM quality, we determined C contents in the SOM fractions, C stocks, the carbon management... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Land use change; Soil carbon fractionation; Carbon management index; Laser-induced fluorescence spectroscopy; Microbial biomass. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100508 |
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