Investigate the Effect of the River and the Surrounding Green Space in the Urban Area on the Environment’s Thermal Condition (Case Study: Dareh Shahr County)

Today , the high temperature is one of the main problems in the city, which affects the thermal comfort of pedestrians. Therefore, urban designers and planners should consider the effect of various urban elements such as water elements on thermal comfort. In this study, to investigate the effect of vegetation and water levels on thermal comfort of pedestrians in the city, Envi-met environmental software has been used. The result showed that vegetation and water have a better effect at the same time than when they are used alone and there is a difference of about 0.5-1 degrees in their effectiveness. It is worth to mention that vegetation is a more powerful solution to reduce the air temperature in the hot season of the year. The extent of these cooling effects of vegetation and water levels depends on the distance from them. The radius of the effect of these two elements on air temperature can be observed up to 200-300 meters. The water level has a better effect when it is close to the ground level, and these effects also depend on artificial environment around it including the height and density of the surrounding buildings.