Study on the variation traits of different types of greenbelt humiture and air ions concentration in summer
This paper mainly chooses 5 different species of trees which made of the greenbelt type.We monitor the inner air temperature,relative humidity and air ions concentration at actual time in certain area so as to study the difference of different greenbelt type in adjusting certain area's microclimate.The results demonstrates that:① when it is at high temperature time in summer,Cunninghamia lanceolata forest and soapberry Chinese scholartree mixed forest' s function of cooling and humidifying is better.Lei bamboo forest has an outstanding effect on humidifying when it is at low temperature.② Cunninghamia lanceolata forest and Michelia Chapensis-Osmanthus fragrans mixed forest has a more outstanding effect on humidifying when it is at high temperature in summer.Lei bamboo forest has an outstanding effect in humidifying when it is in low temperature.There exists a relative small difference in 5 types of greenbelt's humidifying effect in compare with the difference in cooling effect.③ There has no obvious difference in average air ions concentration among different type of greenbelt community,the average air ions concentration among soapberry Chinese scholartree mixed forest is higher than the other greenbelt type.④ln sum up of the index of correlation,the study shows cunninghamia lanceolata,represented as the forest type greenbelt and soapberry Chinese scholartree mixed forest,represented as the protective type greenbelt is a relatively proper greenbelt type to human in summer.
Greenbelt community typehumitureair ions concentrationcomfort level