Communities Thermal Comfort of Different Green Biomass in Minjiang Park of Fuzhou

In order to understand the effect of different green biomass in communities on regulating thermal comfort. The green biomass and physiological equivalent temperature PET values of 20 quadrats of arbor-shrub-grass community in Minjiang Park（south）of Fuzhou were calculated. And the correlation between green quantity and PET values was analyzed. The results showed that in the arbor-shrub-grass community, when the total green biomass per 100 m² was less than 800 m³, the greater the green biomass was, the better the effect of community on regulating thermal comfort was. When the total green biomass per 100 m² was greater than 800 m³, the change of green biomass did not affect the thermal comfort. When the proportion of tree green reached 0.9, the community had the best effect on improving thermal comfort.