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- Title
Incidence of plant cover in noise mitigation. Case study: National University of Colombia, sede Medellín, El Volador campus.
- Authors
Tejada Ladino, Marlon Alejandro; Cárdenas Agudelo, María Fernanda
- Abstract
Noise, defined as unwanted sound, come from different sources, including vehicles; and may have adverse effects on physical and mental human health. The Universidad Nacional de Colombia-Sede Medellín, El Volador campus, is surrounded by roads with high vehicular flow. A question was raised about which is the role of the vegetation cover on the campus, on the mitigation of the noise generated in such roads. The methodology was based on the recording of urban traffic noise in 12 sections of 35 meters length, perpendicular to noise sources. The measurements were made for three weeks, at morning, noon and afternoon. The noise on Sundays is, on average, 15.2 decibels (dB) lower than the recorded during the week. The highway registered, on average, 9.89 dB more than Calle 59a, and 2.25 dB more than Carrera 65. On the highway, the open and dense coverages only have an average of 1.35 and 1.29 dB lower than grass cover. In carrera 65 no significant differences were found between open and pasture covers. The records exceed the maximum permissible standards of environmental noise for institutional use areas in some places on campus; so, although the current vegetation cover helps a little to mitigate noise, noise mitigation would be more effective if complemented with other measures such as artificial acoustic screens, barriers with porous materials that reduce the propagation energy of noise, or through vehicle flow planning that reduces traffic around the campus. It is advisable to try different arrangements, heights and densities of vegetation, looking for the most effective one to mitigate the surrounding noise.
- Subjects
MEDELLIN (Colombia); UNIVERSIDAD Nacional de Colombia; GROUND cover plants; NOISE; TRAFFIC noise; CITY traffic; POROUS materials
- Publication
Revista Facultad Nacional de Agronomía Medellín, 2023, Vol 76, p14
- ISSN
0304-2847
- Publication type
Article