Generación de Datos de Cambio de Coberturas Vegetales en la Sabana de Bogotá Mediante el Uso de Series De Tiempo con Imágenes Landsat e Imágenes Sintéticas Modis-Landsat Entre los Años 2007 y 2013

Abstract

The MODIS sensor onboard the TERRA and AQUA satellites provides global daily observations that allow monitoring of surface changes, but given its spatial resolution of 250 to 1000 meters, such monitoring in highly heterogeneous areas, such as agricultural areas, are often inadequate ; In contrast, the Landsat data has adequate spatial resolution for these purposes, but its temporal resolution of 16 days and the presence of clouds and gaps in the case of the ETM + sensor limits its use in multitemporal tracking and changeover studies . In Colombia the studies for the quantification of coverage changes have traditionally been carried out by comparing visual interpretations, comparing cover maps and analyzing annual composites of satellite images, but studies related to series analysis have not yet been rigorously implemented Of time and the implementation of simulated satellite images for the detection of changes and dynamics of the coverages. In order to evaluate the change maps resulting from time series with Landsat satellite images and time series with simulated Landsat-MODIS images, determining which of the two methods provides the best results in the quantification of the changes and dynamics of the Coverages of the Savannah of Bogotá between the years 2007 and 2013.