Diagnóstico da arborização urbana de Aquidauana, MS

Abstract

To subsidize the planning and maintenance of urban trees, it is necessary, initially, to make a diagnosis of the situation, a qualitative and quantitative survey is one of the tools for this. The aim of this study was to make a diagnosis of road trees in the city of Aquidauana (MS). Eight 200 x 500m plots were sampled, totaling 23 km of sidewalk, 59 streets in seven districts and 1280 trees. Information regarding species, origin, spatial parameters and phytosanitary conditions were registered. The number of trees/km of sidewalk was 55.74, below the recommended value. We recorded 101 species, which are distributed in 36 families, being Fabaceae the richest. A high number of native species was observed, however, exotic species predominate in number and abundance, especially oiti Licania tomentosa (60%). Regarding the size of the trees, the average height was 5.1 (± 1.1) m and circumference at breast height of 68.3 (± 26.2) cm. Regarding the spatial parameter, 46% of the trees are located under the power grid, of these, 60% have some conflict with the grid. About 17% of trees have less curb distance than recommendations. Among the trees sampled, most (60%) do not present any kind of conflict with the infrastructure (sidewalk, signage, lighting or building). The phytosanitary state of the trees requires attention since, considering the presence of termites, parasites, fungi, injuries, inclination, necrosis and poorly pruned, less than 10% of the population is in excellent condition, without any of these problems. We recommend implementing legal standards for tree management, including offering pruning courses to those involved in this practice in the municipality, planting native species and adopting environmental education programs.