Evaluation of the arboreal vegetation influence at the environmental sustainability in the University of Passo Fundo campus, Brazil Melo, Evanisa F. R. Q.; Magro, Francisco G.; Melo, Ricardo H. R. Q.; Melo, Rodrigo H. R. Q.
One important aspect at the sustainable urban planning is the reserve of green spaces into various scales, due to the fact that they possess multiple purposes, reducing the pollution and contributing to the physical, social and psychological health of the users and the community that frequent those spaces. The replacement of the green areas for impermeable areas contributes, between other effects, for the floods and the heat of the urban surface, generating the heat island effect. The objective of this paper was to quantify the spatial distribution of the arboreal vegetation on the campus of the University of Passo Fundo, through geoprocessing techniques, correlating with the arboreal specimens existing, on the intention of comprehend its relation with the environmental sustainability and implications to the users of the campus. To quantify the spatial distribution of the arboreal vegetation were obtained images of high resolution from satellite, for the quantification was utilized the group of softwares ArcGIS 10.2, through the supervised classification technique, which classifies the original image into classes based on a number of samples. The area was classified inside of four distinct classes, arboreal formation, undergrowth, buildings/roads and water resources. Besides that, were evaluated the arboreal species present on the campus through the forest inventory. Were found over 102 different arboreal species with about 4100 specimens, being distributed in the whole area of the campus, this way favoring the benefits they bring, influencing on the microclimate and raising the air humidity through the evapotranspiration, providing an more favorable environment to the users, and allowing that the waters resulting from the precipitation infiltrate in the soil mitigating the rapid runoff, which is one of the factors that aggravate the formation of floods and spates. The vegetations are one important piece for the people that live and use the artificial ambient, avoiding the decline on the urban life quality and contributing at the sustainability. Because of that, there is the need to plan those artificial ambient, creating alternatives from the vegetations so that the users of these environments do not suffer the consequences of the lack of planning.
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