Caracterização de solos sob diferentes usos na região sul do Amazonas

• Autor(a) principal: Oliveira, Ivanildo Amorim De
• Data de Publicação: 2015
• Outros Autores: Campos, Milton César Costa, Freitas, Ludmila De, Soares, Marcelo Dayron Rodrigues
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/1809-4392201400555; http://hdl.handle.net/11449/114555
• topic: análise multivariada; componente principal; solos da Amazônia; terra preta arqueológica; multivariate analysis; principal component; Amazonian of soils; archaeological black earth

Areas with native vegetation are increasingly fragmented due to agricultural occupation, and with the removal of the natural vegetation, the use of soil has shown changes in their chemical, physical and biological attributes. Thus, the objective of this work was to evaluate soil physical and chemical attributes using multivariate technique. The study was carried out in area with Archaeological Black Earth (TPA), forest, pasture, agroforestry, sugar cane and cassava. In these areas 64 soil samples were collected from disturbed and undisturbed soils at a regular spacing of 10 meters and 0.0 to 0.10 m depth for chemical and physical analyses. Areas of TPA and agroforestry had different values for physical and chemical attributes in comparison with soils from pasture, forest, cassava and sugar cane. The areas cultivated with cassava, sugar cane and pasture had similar physical and chemical characteristics. The use of the multivariate analysis tool proved to be useful to detect similarities or differences in soils attributes based on chemical and physical in the study area.