Perda de solo gerada pelas chuvas na bacia hidrográfica do Rio Pardo: uma análise por geoprocessamento

Abstract

There is a need for continuous improvements in the occupation of areas for agriculture or the expansion of cities. Such developments must be carried out in an optimized manner, taking into account the best cost-benefit for people and the environment, thus avoiding future problems that often may not be immediately visible. With these objectives in mind, the study of the characteristics of the region becomes extremely important, allowing better use and signaling points that require greater attention, whether for remediation or prevention of environmental problems in the region. Therefore, the use of geoprocessing makes it possible to study large areas with a high degree of precision, allowing the acquisition of innumerable information. Thus, the characterization of the hydrographic basin demonstrated, rains classified with moderate to strong erosivity, the presence of three types of soils: Red Argiloss, Litholic Neosols and Haplic Planosols, flatter slopes in the outlet region and steep in the intermediate and head of the basin, a predominantly forest and grassland occupation. the application of the Universal Soil Loss Equation in the Rio Pardo Basin obtained values of Soil Loss of low classification in a large part of the region. very high loss points were found mainly in the region of greater slope and in areas of exposed soils, with the greatest loss point located between the cities of Candelária, Passa Sete and Vale do Sol, a region which is advisable for a more in-depth study.