Detalhes bibliográficos
Ano de defesa: |
2011 |
Autor(a) principal: |
Oliveira, Sâmia Paiva de |
Orientador(a): |
Não Informado pela instituição |
Banca de defesa: |
Não Informado pela instituição |
Tipo de documento: |
Dissertação
|
Tipo de acesso: |
Acesso aberto |
Idioma: |
por |
Instituição de defesa: |
Não Informado pela instituição
|
Programa de Pós-Graduação: |
Não Informado pela instituição
|
Departamento: |
Não Informado pela instituição
|
País: |
Não Informado pela instituição
|
Palavras-chave em Português: |
|
Link de acesso: |
http://www.repositorio.ufc.br/handle/riufc/9142
|
Resumo: |
The conversion of forests into pastures may have an impact on the properties and functions of the soil, especially in irrigated conditions. Assuming that the conversion of natural area within the area under irrigated pasture alters some soil properties, aimed to evaluate the chemical, physical and microbiological indicators of soil quality in pasture area, comparing it to its natural condition. To this end, analized the chemical (carbon pools and nitrogen in the soil and lipids); microbiological (carbon and microbial biomass nitrogen, respirometry, populations of arbuscular mycorrhizal fungi and glomalin) and physical attributes (aggregate stability, water retention curve soil, S index and IHO) at different depths and aggregate classes, to establish connections that would enable to identify the changes that occurred in the soil. It was observed generally that the management employee is able to maintain the sustainability of the system. However, it should be noted that intrinsic characteristics such as soil texture and density of the grass root, were decisive in the behavior of selected attributes, such as aggregate stability. There were changes in the attributes studied, mainly in their distribution in the profile, promoting the increase of carbon pools and nitrogen from the soil, beyond the level of lipids. The microbiological attributes did not change significantly, indicating that the irrigated pasture does not adversely affect these attributes. The physical attributes, like CRA IHO and S index, the interference of characteristics, for example, in determining the texture of the soil. |