Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Registro completo
Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Spatial variability of satured soil hydraulic conductivity in the region of Araguaia River - Brazil.
Autores:  GUIMARÃES, E. C.
HAMADA, E.
GOMES, M. A. F.
Data:  2009-01-07
Ano:  2008
Palavras-chave:  Condutividade hidráulica
Solo
Resumo:  This study evaluates the spatial variability of saturated hydraulic conductivity in the soil in an area of 51,850 ha at the headwaters of the Araguaia River MT/GO. This area is highly vulnerable because it is a location of recharging through natural water infiltration of the Guarani Aquifer System and an area of intense increases in agriculture since its adoption by growers in the last 30 years. Soil samples were collected at 383 points, geographically located by GPS. The samples were collected from depths of 0 - 20 cm and 60 - 80 cm. Exploratory statistics and box-plot were used in the descriptive analysis and semivariogram were constructed to determine the spatial model. The exploratory analysis showed that the mean hydraulic conductivity in the superficial layer was less than at the level of 60-80 cm; however, the greatest variability evaluated with a coefficient of variation also was from this layer. Data tended towards a normal distribution. These results can be explained by the greater soil compaction in the superficial layer. The semivariogram models, adjusted for the two layers, were exponential and demonstrated moderate and strong dependence, with ranges of 5000 and 3000 utm respectively. It was concluded that soil use is influencing the spatial distribution model of the hydraulic conductivity in the region.

2008
Tipo:  Artigo em anais de congresso (ALICE)
Idioma:  Inglês
Identificador:  7850

http://www.alice.cnptia.embrapa.br/handle/doc/16077

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/145294/1/2008AA-029.pdf
Editor:  In: INTERNATIONAL CONFERENCE OF AGRICULTURAL ENGINEERING; CONGRESSO BRASLEIRO DE ENGENHARIA AGRÍCOLA, 37., 2008, Foz do Iguaçú. Proceedings... Foz do Iguaçú: SBEA, 2008. 4p. CD-ROM.
Relação:  Embrapa Meio Ambiente - Artigo em anais de congresso (ALICE)
Fechar
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional