Forests as pollution barriers

Air, noise, and light pollution is being monitored at different distances from main roads study the effect of forests as barriers.  The chart below shows how noise pollution decreases with distance from the road.

Our monitoring sites are at Thorndon Country Park next to the A127 arterial road into London, and Little Belhus Country Park next to the M25, London's orbital motorway.  Our supporters are Essex County Council (Thorndon CP) and Rural Arisings (Little Belhus CP) and the land owners.