Publicado
The role of urban green areas in noise pollution attenuation
El papel de las áreas verdes urbanas en la atenuación de la contaminación acústica
DOI:
https://doi.org/10.15446/dyna.v89n220.95822Palabras clave:
afforestation benefits, road noise attenuation, urban parks, vegetation barriers (en)atenuación del ruido de la carretera, barreras de vegetación, beneficios de la forestación, parques urbanos (es)
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.
Esta investigación tuvo como objetivo evaluar la relación entre las características biofísicas de las áreas verdes con la reducción de la propagación del ruido. El estudio se realizó en dos áreas verdes ubicadas en la ciudad de Curitiba, Paraná, Brasil. En las parcelas de 600 m2 se recogieron los niveles de contaminación acústica junto con la vegetación y la caracterización física de cada sitio. Se definieron los valores de contaminación atenuada y se compararon con las características físicas. Los valores de ruido atenuado variaron de 1,7 a 14,8dBeq. La vegetación demostró ser eficiente en la atenuación de la contaminación acústica, demostrando que el sitio con menor cantidad de vegetación obtuvo los valores más bajos de atenuación acústica. La densidad y el número de árboles mostraron correlaciones muy fuertes con los valores de decibelios bloqueados. La combinación de factores como la forma y el tamaño de los fragmentos de árboles con las condiciones del terreno (pendiente del terreno y cobertura) influyó en la propagación del ruido
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