Effects of urban street trees on human thermal comfort and physiological indices: a case study in Changchun city, China

作     者：Zhibin Ren Hongbo Zhao Yao Fu Lu Xiao Yulin Dong Zhibin Ren;Hongbo Zhao;Yao Fu;Lu Xiao;Yulin Dong

作者机构：Key Laboratory of Wetland Ecology and EnvironmentNortheast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun130102P.R.China Key Research Institute of Yellow River Civilization and Sustainable Development&Collaborative Innovation Center On Yellow River Civilization Jointly Built By Henan Province and Ministry of EducationHenan UniversityKaifeng475001P.R.China School of Geography and Engineering of Land ResourcesYuxi Normal UniversityYuxi653100P.R.China University of Chinese Academy of SciencesBeijing100049P.R.China 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2022年第33卷第3期

页      面：911-922页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 08[工学] 0829[工学-林业工程] 0901[农学-作物学] 0834[工学-风景园林学（可授工学、农学学位）] 

基　　金：The work was supported by the Youth Science Fund Project approved by the Youth Innovation Promotion Association of the Chinese Academy of Sciences under Grant 2020237 in part by the National Natural Science Foundation of China under Grant 4170121. 

主　　题：Urban forest Green space Environmental ecosystem services Urban thermal comfort Blood pressure Pulse rate 

摘      要：Planting trees along urban streets is one of the most important strategies to improve the urban thermal environment.However,the net impacts of urban street trees on human thermal comfort and physiological parameters are still less clear.On three similar east-west orientated streets with different degrees of tree cover-low(13%),medium(35%),and high(75%),urban microclimatic parameters and human physiological indices for six male students were simultaneously measured on three cloudless days in summer 2018.The results show that the differences in tree cover were predominant in influencing urban thermal environment and comfort.The street with the highest tree cover had significantly lower physiological equivalent temperature(PET) and more comfortable than the other two streets.The frequency of strong heat stress(PET 35℃) was 64%,11 %,and 0%,respectively,for streets with low,medium,and high tree cover.For the six male university students,human physiological indices varied greatly across the three streets with different tree cover.Systolic blood pressure,diastolic blood pressure,and pulse rate increased with decreasing tree cover.The results also suggest that urban thermal environment and comfort had considerable impact on human physiological parameters.Our study provides reasons for urban planners to plant trees along streets to improve the thermal environment and promote urban sustainability.