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Título : Impact of an agricultural chronosequence in recharge areas of aquifers in the Brazilian savannah
Autor: Gomes Filho, Raimundo Rodrigues
Silva, José Henrique da
Paulino, Helder Barbosa
Carneiro, Marco Aurélio Carbone
Costa, Carlos Alexandre Gomes
Teixeira, Marconi Batista
Palavras-chave: Haplic plinthoso
Cylinder infiltrometers
No-tillage system
Publicador: Academic Journals
Data da publicação: 30-Out-2014
Referência: GOMES FILHO, R. R. et al. Impact of an agricultural chronosequence in recharge areas of aquifers in the Brazilian savannah. African Journal of Agricultural Research, [S.l.], v. 9, n. 44, p. 3267-3275, Oct. 2014.
Abstract: Current study was conducted, in 2010, on the Boa Vista Farm at the Rio Claro watershed of the southwestern region of Goiás, state, Brazil. The region features micro-reliefs with marshy fields and predominantly Haplic Plinthosols. Most areas were incorporated into the agricultural production systems without evaluating the impact on their hydro-physical characteristics. Current analysis evaluates the transformation impact of marshy lands into agricultural areas through an investigation of empirical methods of water infiltration into the soil. Three chronosequenced areas for agricultural use and a preservation area were selected. Water infiltration in the soil was analyzed by field data and by calculations following Kostiakov, Horton and Lewis-Kostiakov. Models overestimated infiltration rates at the beginning of the process and compared to those from field data. The model proposed by Horton was highly similar to rate of basic infiltration speed harvested from field data. Structural quality was reduced through infiltration velocity in the area with human interference with grown under no-tillage system.
Idioma: en
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