Taking brick,stone,wood,plastic,granite and bare grass 6 kinds of underlying surface of Beijing street parks,the sintered brick with same material,different colors as the measurement for a period of three days,through the arrangement and analysis on relative humidity,surface temperature and thermal stress index and other microclimate element data,put forward the optimization countermeasures of city street parks design taking improvement of microclimate as the guide,in order to improve the city street parks ecological function,reduced urban heat island effect.%选取北京街旁游园砖、石、木、塑胶、花岗岩和裸露草地6种下垫面，以及相同材质，不同颜色的烧结砖进行了为期3 d 的实测，通过整理分析相对湿度、地表温度及热应力指数等小气候要素数据，提出了以调节改善小气候为导向的城市街旁游园设计的优化对策，以提高城市街旁游园的生态功能，减少城市热岛效应。
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