福州城市绿地夏季小气候特征分析

Analysis of Summer Microclimate Characteristics of Five Urban Green Spaces in Fuzhou City

通过对福州市5处城市绿地夏季小气候进行实地观测,分析福州城市绿地夏季小气候特征。结果表明:(1)福州5处城市绿地夏季小气候的全天变化趋势大致相同,但总体上公园比广场更为舒适;(2)自然材质作为下垫面,对稳定温度有着良好的效果;(3)下垫面对空气温度的加温影响力强于遮阳形式的降温影响力;(4)绿色植被面积与增湿效果正向相关,面积过小的绿色植被对相对湿度的影响不大;(5)乔木、建筑及二者间所形成的夹道,能够增大风速,其风速大小与场地的其他因素有关。

Conducted by field observations on the microclimate of five urban green spaces in Fuzhou,this paper analyzes the microclimate characteristics of Fuzhou urban green space in summer.The results showed that:(1)The whole-day change trend of summer microclimate in five urban green spaces in Fuzhou was about the same,but in general,the microclimate in the park was more comfortable than that in the square.(2)Natural material as the underlying surface had a good effect on temperature stabilization.(3)The influence of the warming effect of the underlying surface on the air temperature was stronger than the cooling effect of the shading form.(4)The area of green vegetation was positively correlated with the relative humidity,and the green vegetation with too small area has little effect on the relative humidity.(5)The arbor,the building and the tunnel formed between the two could increase the wind speed stably.The wind speed of the natural wind was related to other factors of the site.