EVALUATION OF VULNERABILITY TO SOIL LOSS IN THE ESPINHO STREAM SUB-BASIN, MUNICIPALITY OF MORRINHOS, CEARÁ, BRAZIL

Abstract

The present work aims to identify the different degrees of vulnerability to soil loss in the Espinho stream sub-basin, municipality of Morrinhos, Ceará, Brazil. For this, it was used as a methodology the construction of a geographic database with the help of the QGIS software version 3.16-Hanover, from the criteria Geology (G), Slope (D), Pedology (S), Use and Coverage (U ) and Climate (C). Four classes of vulnerability to erosive processes were identified in the sub-basin. The results showed that the classes with predominance of pedogenetic processes accounted for 34% of the sub-basin area. The one whose processes represent balance between pedogenesis and morphogenesis was 64%. The class where morphogenetic processes prevail totaled 2% of the studied area.