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Provedor de dados:  63
País:  Brazil
Título:  Spatial variability of physical and chemical attributes of some forest soils in southeastern of Brazil
Autores:  Alvares,Clayton Alcarde
Gonçalves,José Leonardo de Moraes
Vieira,Sidney Rosa
Silva,Cláudio Roberto da
Franciscatte,Walmir
Data:  2011-12-01
Ano:  2011
Palavras-chave:  Geostatistics
Semivariogram
Geographic information system
Soil management
Forestry precision
Resumo:  Capão Bonito forest soils, São Paulo state, Brazil, have been used for forestry purposes for almost one century. Detailed knowledge about the distribution of soil attributes over the landscape is of fundamental importance for proper management of natural resources. The purpose of this study was to identify the variability and spatial dependence of chemical and physical attributes of Capão Bonito forest soils. A large soil database of regional land was raised and organized. Most of the selected variables were close to the lognormal frequency range. Soil texture presented a higher range in the A horizon, and the nugget effect and sill were greater in the B horizon. These differences are attributed to the parent material of the region (Itararé Geologic Formation), which presents uneven distribution of sediments. Chemical attributes related to soil fertility presented a higher spatial dependence range in the B horizon, probably as a result of more intensive management and erosion history of the superficial soil layer. Maps for some attributes were interpolated. These had specific areas of occurrence and a wide distribution along the perimeter of the Capão Bonito District Forest, allowing a future site-specific soil management.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000600015
Editor:  São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação:  10.1590/S0103-90162011000600015
Formato:  text/html
Fonte:  Scientia Agricola v.68 n.6 2011
Direitos:  info:eu-repo/semantics/openAccess
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