影响街道峡谷内交通污染物扩散的研究综述

A Review of Pollutant Diffusion in Urban Street Canyon

本综述结合国内外学者的研究,应用图表描述和文字表达的方法,总结了影响城市街道峡谷内污染物扩散规律的各个因素,对比了不同影响因素下城市街道峡谷内污染物传输扩散结论的相同点和不同点,发现影响城市街道峡谷内污染物扩散规律的因素主要包括气象条件、建筑物几何结构、道路类型及植被覆盖等,这些因素会显著的影响街道峡谷内湍流的结构、污染物的扩散效应及浓度等,因此文章针对较为全面的影响因素集合进行了详细的论述,为揭示街道峡谷空气污染物扩散规律提供依据和参考。

Based on the research of scholars at home and abroad,this paper summarizes the factors that influence the diffusion of pollutants in urban street canyons by using the methods of chart description and text expression.In this paper,the similarities and differences of pollutant transport and diffusion in urban street canyons under different influence factors are compared.It is found that the main factors influencing pollutant diffusion in urban street canyons include meteorological conditions,geometric structure of buildings,and so on.Road types and vegetation cover,these factors will significantly affect the structure of turbulence in street canyons,pollutant diffusion effect and concentration,etc.It provides the basis and reference for revealing the law of air pollutant diffusion in street canyons.