Efecto de la deforestación sobre dela temperatura de superficie en el parque nacional natural (PNN) Sierra la Macarena durante el periodo 2003 - 2019

Abstract

The study consisted of evaluating the effect of deforestation on the surface temperatura (LTS) in the Sierra de La Macarena National Natural Park (PNN) during the period 2003 - 2019. For this, 1570 images of the MYD11A2 product of MODIS sensor were used, and surface temperatura (LST) bands were extracted from layers 1 and 5 that correspond to day and night with a spatial resolution of 1Km and a temporal resolution of 8 days. Subsequently, a sample of 6 groups of pixel centroids located on strategic areas of conserved and deforested coverage was taken, in order to capture surface temperature values and with them, perform statistical processing of their behavior with InfoStat software. From the analysis of the information, it was identified that January, February and March are the months with the highest temperature values, while June and July have the lowest values, directly related to the precipitation regime of the area. Additionally, it was evidenced that the surface temperature (LTS) of the transformed cover is higher than that of the preserved cover, being 2.46 °C on the day and 0.74 °C at night, this is due to the fact that deforested covers retain higher rates of heat in the soil, causing an increase in surface temperature.