Levantamento quali-quantitativo da composição florística em diferentes praças do município de Uruçuí - Piauí

Abstract

In the last years, the urbanization process is intensifying and, due to the urban centers’ ampliation, it’s possible to observe a growing detachment equally proportional between the human population and nature. The urban vegetation is found related to different important functions in the cities, an example of that is the regulation and thermal control of the environment. In this regard, aiming to supply these needs, urban afforestation has arisen, focussed on the dissemination of vegetal compounds in public squares, streets, and avenues. This study objectifies to analyze the arboreal compounds found in different squares of the Uruçuí county, to characterize the quali-quantitative compounding of the inserted species in these areas through projecting its arboreal ratings. For this purpose, a floristic survey was developed in three squares that belong to the county, identifying the arboreal species and their respective phytosanitary and morphological conditions. It was considered only the species with a circumference at the chest height (CCH) ≥ 15 cm. In terms of quantitative aspects, were analyzed: the green coverage percent (GCP), the arboreal shading index (ASR), the Shannon Wener diversity index (H’), and the Pielou’s evenness index (J’). Thus, it was possible to register 101 arboreal individuals, which are found distributed in 17 species and 11 botanical families, being the largest representability of exotic species (52,9%). The square which presented a larger deficit in regards to the analyzed indexes (GCP, ASR, and J’) was square C, there is, therefore, a need for intervention directed to the implementation of new species, since the number of species concerning its total area was low in detriment of everywhere else