Vegetation indices as an instrument for analyzing plant distribution in the landscape of the Gericinó Municipal Natural Park, Nilópolis – RJ

Abstract

Within the scope of geotechnologies, Unmanned Aerial Vehicles (UAVs) are tools increasingly used for Remote Sensing of cultivated areas and native vegetation through Vegetation Indices. With the processing of RGB digital images through arithmetic operations applied to their spectral bands, it is possible to extract information regarding the distribution and health of plants, as well as soil exposure to erosive processes, assisting in decision making for environmental management and land planning. territory. The present study aimed to evaluate the distribution of vegetation based on different vegetation indices in an Integral Protection Conservation Unit, using automatic classification tools. The flight to take images and obtain control points took place during the rainy season in several areas of the park. The results obtained demonstrated that the ExG and GLI indices were those with the best visual response to the vegetation distribution and the best automatic quantification of their spatial coverage area.