Adaptação do fator geomorfológico na metodologia de mapeamento da vulnerabilidade à perda de solos

Abstract

The present work starts from the observation of scientific works that used the methodology for mapping vulnerability to soil loss by Crepani et al. (2001), and questions about the adaptation or lack of analysis factors that are part of this methodology. With this, the work proposes the adaptation of the altimetric amplitude factor, replacing it by HAND. With this in mind, the main objective of the work is to propose an adaptation of the geomorphological factor of the methodology of vulnerability to soil loss, by Crepani et al. (2001). The methodology was divided into two fronts, bibliographic survey and data processing through secondary data, compilation of thematic maps. As a main result, it is evident the good response obtained by the application with the HAND model, as well as two final maps, the one of environmental vulnerability to soil loss, using the land use and coverage map and the oneof natural vulnerability to loss of soils, making use of the vegetation factor, as evidence of vegetation cover. From this, it was found that the Peixe River watershed presented significant areas of moderately stable/vulnerable vulnerability, which according to the analyzes the main factor of this degree are agricultural activities and incorrect soil management, combined with localities of relief and types of rocks and soils. As final considerations, it is possible to say that this work provides support for the application of this adaptation in other river basins, and socioeconomic factors can also be implemented for possible studies of Economic Ecological Zoning.