Abstract:

In order to filter out the main urban greening tree which has the strong dust-retention ability, the dust-retention ability of 6 major deciduous greening trees at 3 representative regions, including industrial area, main traffic artery and clean area in Xuzhou were studied. The results showed that: (1) different deciduous greening trees had distinctly different dust detaining abilities when in the same dust environment region: α=0.05, P≤0.001; (2) Under the same dust condition, the descending order of dust-retention ability in 6 deciduous greening trees was as follows: Lagerstroemia indica>Platanus×acerifolia>Pterocarya stenoptera C>Populus tomentosa Carr>Broussonetia papyrifera>Populus euramevicana cv; (3) The dust-retention ability of deciduous greening trees was closely related to the surface characteristics of leaves. Lagerstroemia indica, Platanus×acerifolia and Pterocarya stenoptera C should be given prior consideration in the choice of the deciduous tree species in Xuzhou for reducing the atmospheric particles.