The Thermal Performance of Ficus Microcarpa in Different Seasons and its Application in Gardening
to understand the thermal performance of trees in different seasons, whilst proposing plant configuration for specific species, this study has conducted investigation on the leaf transpiration rate and microclimate performance of Ficus micorcarpa, which is a common species in Guangzhou.The result has shown that the tree canopy of Ficus micorcarpa can reduce approximately 90% of the incident solar radiation, hence reducing ground temperature under the shade and having thermal buffer action.In addition, the tree canopy of Ficus micorcarpa can release energy and decrease air temperature due to leaf transpiration.Leaves on the west and south greatly contribute to the transpiration, reaching the peak at 11 : 00 and 14 : 00 respectively.The transpiration rate in summer is much higher than that in spring.The heat dissipation due to transpiration can be nearly 30%-60% of the incident solar radiation, which in summer is as twice as that in spring.The air temperature reduction led by transpiration is about 40%-50% of the measured temperature reduction, while it is higher in spring than in summer.The thermal performance of Ficus micorcarpa relates to its transpiration rate and canopy characteristics.Based on the above findings, this study has come up with two suggestions for the application of Ficus micorcarpa in garden: (1) showing the west and south canopy to the sunlight in order to increase the transpiration rate;(2) utilizing the canopy shading as a thermal buffer for the ground.Given that, landscape designers can consider the ecological functions of trees and modify the microclimate based on plant configuration during the urban environment design.
Ficus micorcarpa transpiration microclimate plant configuration
Liu Zhixin Fang Xiaoshan Zhao Lihua
School of Architecture, South China University of Technology
国际会议
上海
英文
487-494
2018-01-27（万方平台首次上网日期，不代表论文的发表时间）