Determinação da cobertura vegetal de Olinda-PE: um subsídio a gestão florestal urbana

Abstract

Urban sprawl without proper planning create many side effects for its inhabitants, both environmentally and socially. Increasingly, vegetation has been associated to the idea of quality of life, due to the proven benefit it promotes in the urban environment. The objective of this research was to classify the land use of the city of Olinda – PE, as well as to quantify its urban forest. For this, were used remote sensing techniques, with the purpose of generating spatial information that will serve as a basis for urban land use and occupation planning. And so, the urban infrastructure, water, exposed soil, vegetation and cloud classes were identified through the QuantumGIS software with the Maxver supervised classification, with 10 meters resolution SENTINEL – 2 satellite images dated from February of 2018. The urban forest indexes of the city were determined and measured. The county of Olinda presented land use of 6,32% of water, 12,96% exposed soil, 59,86% urban infrastructure, 12,72% of vegetation and 8,14% clouds. The amount of urban forest in the regions was variable, but it was unsatisfactory to promote environmental benefits to the population, except for the rural zone, where is the greater amount of vegetation in the city. It was observed that Olinda is a city with fewer vegetation, compared to some listed in this work. It was possible to realize that the city lacks of creation of green areas and afforestation.