The aero electro-pellet´s distribution about highroad shelter woodland in Hefei city

The paper studied road shelter woodland how to effect on attenuation of aero electro-pellet. The study determined aero electro-pellet content that stand different position. The result indicated that electro-pellet of high mobility ratio(>;0.15cm²/v.sec) content is higher than the low mobility ratio (<;0.04 cm²/v.sec) in clean area. And the negative corpuscle content was slightly higher than the positive corpuscle. The electro-pellet of low mobility ratio (<;0.04 cm²/v.sec) content is far higher than the high mobility ratio (>;0.15cm²/v.sec) in roadside, and the positive corpuscle content was far higher than the negative corpuscle. Therefore, the electro-pellet that mobility ratio was smaller 0.04 cm²/v.sec may be served as the path air pollution the norm for reference. The road stream of vehicles was the important source that bring about the pollution. The road shelter woodland may cut the mobility ratio was lower than 0.04 cm²/v.sec electro-pellet content effectively. Approximately the 40m wide harmful aero electro-pellet weakens to the clean atmospheric level.