Distribución espacial de la contaminación por fuentes fijas y su relación con parámetros hidrológicos en la zona norte del departamento del Tolima.
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Climate change is perhaps one of the biggest problems that we can see in our day to day, it is caused by the use of fossil fuels, cutting down trees, exploitation of land for agricultural use and socio-economic aspects of the area. This causes changes in the temperature, flow of the tributaries and vegetation cover. In this work, satellite images from northern Tolima taken from the geological service page of the United States (USGS) will be used. These images will be analyzed with geographic information system (SIG) specifically with ArcMap to determine the behavior of changes in surface temperature. (TS), the Normalized Difference Vegetation Index (NDVI) and the Normalized Difference Water Index (NDWI) this in order to evaluate the spatial time distribution of the hydrological parameters in the northern area of the department of Tolima. In this study we are in the decade of 1980-1990 and 2010-2020, in the section of coverage of water and water coverage, this is because in the studied area has been implementing many rice crops leaving aside the cattle raising.