Relação entre erosão e declividade e as conseqüências erosivas na área do Morro Cerrito em Santa Maria – RS

Abstract

The present work objectified to investigate the geographic space of the mount Cerrito in Saint Maria - RS, through the relation between the erosion and declivity and erosive consequences. On the basis of the image of Ikonos satellite the information had been processed, stored and collected in Springer 4.1. In the digital classification five classrooms of declivity had been established on the basis of the proposal of De Biasi (1970) with erosive points, rising, hydrography and urban net. The declivity classroom that predominates in the mount of the Cerrito is between 5 and 12% with 215,70 ha or 36.5%, the clinografic letter elaborated on the basis of the methodology of De Biasi (1992), showed in its espaciality that occurs the predominance of the indices of concentration of springs in the classrooms between 12 and 30% with the total 46 niches of springs showing that it has fort relation enter the Index of Concentration of Nascente (ICN) and the declivity. It is noticed, however that it does not occur the same in relation to the Index of Erosive Concentration (ICE). In the correlation of Pearson it did not have a relation between declivity and Indices of Erosive Concentration.