城市广场热环境的现场实测与分析

针对城市广场普遍存在的热环境问题，通过对西安市典型广场的温湿度测试，揭示了影响城市广场热环境的主要因素及其关系。对比分析表明，城市道路布局、建筑空间界面、铺地材料、绿化植被及水体面积等是决定广场温度、湿度和气流速度的关键因素，合理配置并综合协调各关键因素的关系是提高广场热舒适性的有效途径。最后，以营造可持续生态环境为理念，提出了改善城市广场热环境的具体措施。

Measurement and Analysis of Thermal Environment for Squares

Aiming at the wretched thermal environment existing in many squares, the paper discusses the main factors and their mutual relations affecting the thermal environment. The results from the measurement and analysis of temperature and humidity to the typical square in Xi'an city shows that the road plan, the flooring, the green areas and water system are the crucial factors to the temperature, humidity and wind velocity in the square, and the coordination of these factors is the effective way to improve thermal environment there. Based on the concept of sustainability and eco- environment, the concrete steps to improve the thermal environment in squares have been proposed.