Adsorption Ability of Green Plants to Heavy Metals in the Atmosphere of Binzhou City

Through exploring the cumulative contents of Pb, Cu and Cd, the 3 common heavy metals in air pollution, in leaves of some widely-applied green plants in different functional areas in urban districts of Binzhou City, this paper figured out its relationship with functional areas in the city, and whether green plants are selective in adsorbing heavy metals or not. The research found that cumulative content of Cu and Cd varied greatly in leaves of the same species in different functional areas, and also in leaves of different species in the same area. Populus tomentosa and Sophora japonica had the strongest capacity of adsorbing Pb, Cu and Cd in the air, which is a useful reference for the urban landscaping of Binzhou City.