Análisis multitemporal de cambios de cobertura y usos de suelo de la cuenca del río jubones, ecuador

Abstract

The Jubones river basin (CRJ) has a diversity of both ecological and climatic levels; changes in land cover and use affect activities that depend on water resources. The objective was to analyze the changes produced in the different classes of coverage and occupation of their soils in the CRJ. Landsat 5 (TM) and Landsat 8 (OLI-TIRS) images were used for the years 1991 and 2016, respectively. The supervised classification was carried out in 6 classes according to level 1 proposed in the thematic cartography of the Ministry of the Environment of Ecuador, with the discard of pixels occupied by clouds. In the thematic maps obtained from the classification, a minimum general precision of 0,93 and a Kappa index of 0,90 stand out. In the evaluation of change in coverage and land use, thematic maps were compared based on the rates of change by coverage classes; there was an increase in classes TA (0.76%) and AH (0.62%); and a decrease in BO (-2.05%) and OT (-1.79%). These changes in a period of 25 years can be attributed to the strong anthropic intervention on natural resources.