Studies on the Noise Absorption of Plants (I)

Experimental Tests of Traffic Noise and Noise Attenuation effects of Shrubs

Abstract

Noise attenuation characteristics of various plants, such as trees, shrubs, and grasses have been studied to determine the effects of various biological and physical parameters on noise abatement. In general, significant noise reduction is obtainable by well developed shrubs, belts and grasses. The juniper and holly shrub belts can reduce noise level in the order of 3dBA per 10 feet in addition to natural distance attenuation. Grasses covering ground can be used effectively for reducing the noise propagation at ground level.
Further research is required for in-depth study in order to identify the most effective elements of plant physical properties which can be used effectively in the traffic noise abatement.