FOREST’S SCREENING EFFECT ON DISTRIBUTION OF TRAFFIC NOISE Summary

Noise is one of the most popular environmental pollution. Long-standing residence in noisy areas can cause discomfort, problems with sleeping, neurosis, etc. Because of moving sources and increasing the number of routs, communica-tive noise is drudging on the huge areas. The level of noise emitted depends on the number of vehicles, as well as their types, speed and technical condition and also the type of routs pavement. Propagation of acoustic waves in the roadside area is stipulated by sound's source energy as well as characteristics of the emitter. Forest ecotone zones and roadside afforestation constitute a certain ecological filter buff-ering contaminations generated by traffic. Trees and shrubs growing in the vicinity of routs are able to reflect as well as absorb noise. They can form natural acoustic screen. The paper presents an assessment of the propagation of communicative noise on the forestry areas by analysis of variance. Researchers were carried out in the forest area, urban and park forests. Evaluation of noise propagation was con-ducted in January and July 2006. The measurements ’ intensity of noise was inter