[1] [1] Michael J. Source contributions to the size and composition distribution of urban particulateair pollution[J].Atmos. Environ., 1998, 32(16): 2803-2816.

[2] [2] Calder K L. On estimating air pollution concentrations from a highway in an oblique wind[J].Atmos. Environ. (1967), 1973, 7(9): 863-868.

[3] [3] Lee I Y, Park H M. Parameterization of the pollutant transport and dispersion in urban street canyons[J].Atmos. Environ., 1994, 28(14): 2343-2349.

[4] [4] Wania A, Bruse M, Blond N,et a1．Analysing the influence of differentstreetvegetation on traffic-induced particle dispersion using microscalesimulations[J]．J. Environ. Manage., 2012, 94(1): 91-101.

[5] [5] Xu Weijia, Xing Hong, Yu Zhi. Effect of greenbelt on pollutant dispersion in street canyon[J].Chinese Journal of Environmental Science, 2012, 33(2): 532-538(in Chinese).

[6] [6] Zoumakis N M. A note on average vertical profile of vehicular pollutant concentration in urban street canyon[J].Atmos. Environ., 1995, 29(24): 3719-3725.

[7] [7] Chan L Y, Kwok W S. Vertical dispersion of suspended particulates in urban area of Hong Kong[J].Atmos. Environ., 2000, 34(26): 4403-4412.

[8] [8] Meroney R N, Pavageau M, Rafailidis S,et al. Study of line sourcecharacteristics for 2-D physical modeling of pollutant dispersion in street canyons[J]. J. Wind Eng. Ind. Aerod., 1996, 62(1): 37-56.

[9] [9] Bi Yingtao.A Study of Air Flow and Vehicle Exhausts Dispersion in Urban Street Canyon[D]. Shanghai: Master’s Thesis of Shanghai Jiao Tong University, 2001(in Chinese).