Effects of Street Geometry and Greening on Thermal Environment in Street Canyon in Summer

In this paper,using the software of DUTE,the parameters of WBGT and UHI intensity in Guangzhou street canyon with hot and humid climate were simulated,and the influence factors were discussed,including the ratio of height to width,street orientation,asymmetry and greening.The results demonstrated that the thermal environment in narrow canyon was better than that in wide canyon,and S-N canyon was better than E-W canyon.Furthermore,there was a positive liner correlation between the proportion of trees in the canyon and the decrease of UHI intensity.In addition,asymmetry had little impact on diurnal thermal environment of the canyon.This paper was a preliminary and quantitative study,which could provide references for urban planning and street canyon design.