Noise reduction

Especially urban areas suffer from noise. The most significant source of noise is the traffic. Vegetation, most of all trees, forms a natural noise reduction structure. Sufficiently wide, dense and high vegetation is effective at attenuating especially high frequency noise.

Noise may have a negative impact on human health in many ways. Physiological symptoms are, for example, different kinds of stress reactions, increased blood pressure, increased risk of coronary artery disease and disturbances in the immune system. Psychological symptoms may be, for instance, feelings of annoyance, anxiety and depression.

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