Variabilidade climática e seus efeitos no processo de arenização em Gilbués-Piauí

Abstract

In the southwest of the state of Piauí there are areas that demonstrate environmental fragility in relation to climate characteristics. It is intended in this research, identify the effects of climate variability in sandization process in Gilbués-Piauí. The work was drawn from the literature review, collection and analysis of meteorological data, graphing rainfall and conducting field work. As a result, the article presents the following investigations: a) the sandizationprocess due mainly to the strong erosivity local rainfall and soil erodibility; b) the rains "energetic" favor the water flow and enhances the formation of erosion. The sandization process in Gilbués is complex and is located in a fragile environment with very dynamic weather conditions and with high rainfall variability and exceptional episodes of rainfall.