Análise de áreas desertificadas nos Cariris Velhos - PB.

Abstract

This paper addresses the issue of desertification, be characterized by a sort of degradation likely to occur in areas of arid, semiarid and dry sub-humid, resulting from climate change and human attitudes, showing a direct relationship to vegetation and soils. For its development, three techniques were used in order to analyze the behavior and dynamics between soil and vegetation in some degraded areas in the districts of Cariri. The first technique used was the infiltrometer test, conducted in the municipality of Caraúbas to identify the level of the water infiltration rate. The other test was to collect soil for identifying patterns of fertility, held in Santo Domingo and Cariri Coxixola. The latter technique was based on the analysis of vegetation from a transect, held in Santo Domingo and Cariri Coxixola. The test results showed that the infiltrometer area is analyzed with compacted soil due to deforestation; analysis showed soil nutrient deficiency, particularly phosphorus, potassium and organic matter, the application of the transect is shown that the vegetation sparse and with a small number of individuals.