Influence of Plant Community Structures in Urban Park on Microclimate in Summer

On August 10th, 18th and 19th 2020, determinations were carried out on air temperature, relative humidity and illumination intensity at 8 different communities and one control (paved road) in Xiuhu Park in Yiwu city, Zhejiang province. The results showed that the illumination intensity was significantly correlated with temperature and relative humidity (P<0.05). Structures like large arbor-small arbor-shrub-grass, large arbor-grass, and single large arbor had the strongest effect on microclimate with significant differences with the left structures. Small arbor-grass had better moistening effect than cooling one. While shrub-grass had no evident difference in temperature and humidity with CK. The research resulted that large arbor in the community structure plays a major role in regulating the microclimate. Structure of arbor-small arbor-shrubs-grass was recommended for urban green.