城市公园不同植物配植类型与温湿效应的关系

对杭州城北体育公园3种不同植物配植类型绿地(乔-灌-草型、乔-草型、草坪型)的空气温度、相对湿度和光照强度进行实地测量，并采用不舒适指数作为评价指标，对比分析城市公园不同植物配植类型绿地的人体舒适度差异。结果表明，不同植物配植类型绿地都有一定的降温增湿效果，降温增湿效应依次为乔-灌-草型>乔-草型>草坪型，相对于前两者，草坪型的降温增湿效果并不显著。而日均不舒适指数依次为草坪型(30.8±0.2a)>乔-草型(29.1±0.3b)>乔-灌-草型(28.9±0.3c)，乔-灌-草型和乔-草型绿地的不舒适指数均有显著差异。在城市公园建设中，风景园林设计师应考虑植物配植类型的多样性与稳定性，适当增加乔-灌-草和乔-草类型的绿地。

Relationships between Different Types of Plant Arrangement and Temperature-humidity Effects in Urban Parks

Through the field measurements of the air temperature,relative humidity and light intensity of three different plant arrangement types of green spaces (tree-shrub-herb,tree-herb,and lawn) in the North City Sports Park of Hangzhou,and using the discomfort index as the evaluation indicator,we compared and analyzed the differences of human comfort in different plant arrangement types of green spaces in urban parks.The results showed that different plant arrangement types of green spaces had certain cooling and humidifying effects,which successively followed the sequence of tree-shrub-herb>tree-herb>lawn,in which cooling and humidifying effect of the lawn type was not significant.The average daily discomfort index was in the order of lawn (30.8±0.2a) >tree-herb (29.1±0.3b) >tree-shrub-herb (28.9±0.3c).The discomfort indexes of tree-shrub-herb and tree-herb types of green spaces were significantly different.Therefore,when designing landscape architects in urban parks,the diversity and stability of plant arrangement types should be considered,and appropriately green spaces as tree-shrub-herb and tree-herb types should be emphasized.