Study on the Dust-retention Capacity Resulting from Greenbelt of the Main Roads in Xuchang

摘要

With the acceleration of urbanization, dust composed of solid particles has become one of the major air pollutants in urban areas. The dust-retention capacity and its spatial distribution of 8 greenbelt types are discussed. The results show that the dust-retention capacity of Cedrus deodara is the highest, and the total dust-retention capacity is (2.85±0.28) g/m~2, in contrast, only (0.48±0.04) g/m~2 for Ligustrum quihoui. Moreover, the dust-retention capacity of outside of 7 greenbelt types is higher than that of inside, except Osmanthus fragrans. The dust-retention capability of outside indicates an order of lower section, middle section and upper section, and an order of middle section, lower section and upper section of inside.