Cuantificación de zonas verdes en centros poblados y su aporte en oxigeno mediante el uso de datos de sensores remotos

Abstract

Abstract: Nowadays there is an accelerated growth of urban hotspots, decreasing the vegetation cover, which affects the quality of life of its inhabitants. In this context, it is necessary to estimate the vegetation cover and the amount of oxygen it provides, becoming an important indicator that requires to be monitored. This can be done through manual information gathering or through Remote Sensing and Photogrammetry techniques, the latter has been developed in a remarkable way due to the evident technological advance in relation to data processing algorithms, aircraft and sensors. Today Loja city does not have complete information on the existing vegetation cover (trees) and its oxygen supply, the objective of this research is to quantify the vegetation cover and estimate its oxygen supply. Two sources of information were used in the investigation: satellite images obtained from the Sentinel 2B satellite, with which the normalized difference vegetation index was calculated, and images obtained by VANT of certain areas of the city. The use of this information implies the use of two methodologies to estimate the amount of existing biomass and oxygen supplied in the city. The results obtained show an evident difference between the methods applied, especially in spatial scales and types of sensors. Therefore, it can be concluded that estimating the vegetation cover and oxygen provided is partially possible with the techniques used in this research.