Resumo

OLIVEIRA, Jefferson Dias de; BIONDI, Daniela  e  REIS, Allan Rodrigo Nunho dos. The role of urban green areas in noise pollution attenuation. Dyna rev.fac.nac.minas [online]. 2022, vol.89, n.220, pp.210-215.  Epub 16-Set-2022. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v89n220.95822.

This study aimed to evaluate the relationship between the biophysical characteristics of green areas with the reduction of noise propagation. The study was conducted in two green areas located in the city of Curitiba, Paraná, Brazil. Noise pollution levels along with the vegetation and the physical characterization were collected in each plot site of 600m2. The attenuated pollution values were defined and compared with the physical characteristics. The attenuated noise values varied from 1.7 to 14.8 dBeq. The vegetation proved to be efficient in attenuating noise pollution, showing that the site with the least amount of vegetation obtained the lowest noise attenuation values. The density and number of trees showed very strong correlations with the blocked decibel values. A combination of factors such as the shape and size of the fragments with the terrain conditions (terrain slope, and coverage) influenced the noise propagation.

Palavras-chave : afforestation benefits; road noise attenuation; urban parks; vegetation barriers.

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