Influencia morfoestructural en la génesis de los procesos de arenización en Rio Grande do Sul, Brasil.

Abstract

Sandization is a degradation process of the soil controlled by hidric and eolic action, which makes difficult the fixation of vegetal cover in areas with weak substratum. Given this reason, the southeast region of Rio Grande do Sul is identified as a special attention area by Ministry of Environment. The region is located at Paraná Basin and its basement is formed by many weak zones, divided in fault blocks. Through investigation of this processes genesis, it was possible to relate structural lineaments, drainage disposition, relief orientation and sand field occurrences. One of the most fundamental processes in this research is the treatment of SRTM images