Using green infrastructure to improve urban air quality (GI4AQ)

摘要

Schematic representation of flow around a dense tree crown, in elevation and in plan, and street trees can cause areas of relatively lower (blue) and higher (red) ground-level pollutant concentrations, with the street-average concentration shown in yellow (adapted from Jeanjean et al. ). In the plan view cartoon of a street canyon containing trees ( ), the trees will be approximately located at the intersections of the red and blue filaments of air with higher and lower pollutant concentrations, initiating disturbances in the down-wind flow at these points