Análise espacial da arborização urbana de Aquidauana (MS): subsídios à gestão e manejo

Abstract

Urban forests provide several ecosystem services that contribute to improving the quality of life in cities. The reduction of these forests is important because they are an indicator of the amount of ecosystem services provided to citizens. Understanding how the forestry of a city is distributed and what factors influence this distribution is imperative to devise more effective strategies for managing the urban tree cover, in order to maximize benefits and ecosystem services to all citizens in a more equal and fair way. The objective of the present study was to verify how the road forestry of Aquidauana (MS) is distributed in the different neighborhoods and to indicate the number of trees to be planted in the city, to calculate the necessary investment to reach the recommended afforestation indexes and to indicate the neighborhoods that need of greater attention. The survey was carried out through a tree census between January and June 2023. A total of 27,801 trees were counted in 307 streets, avenues and lanes, in an extension of 441 kilometers of sidewalk (63 trees/km). The abundance of trees on public streets in Aquidauana is below the indicated minimum, requiring an addition of 24% more trees on city sidewalks (planting 8,970 trees), an average investment of R$ 924,500.00. We analyzed the Vegetation Index by Normalized Difference (NDVI), with the highest averages observed in Bairro Trindade, São Francisco, Exposure and Guanandy. The neighborhoods with the highest Index of Built-up Areas by Normalized Difference (NDBI) were Alto, Santa Terezinha and Serraria and the neighborhoods with the lowest index of built-up area were Cidade Nova, Trindade and Centro. Our results indicate that the distribution of trees on public roads is not homogeneous, with Nova Aquidauana being considered a priority in this regard.