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Position: Home > Articles > Coupling outdoor air quality with thermal comfort in the presence of street trees: a pilot investigation in Shenyang, Northeast China Journal of Forestry Research 2022,34 (3)

Coupling outdoor air quality with thermal comfort in the presence of street trees: a pilot investigation in Shenyang, Northeast China

作者：

Chunping Miao;Pingping Li;Yuanqing Huang;Yuxuan Sun;Wei Chen;Shuai Y

单位：

CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, People’s Republic of Chin;CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, People’s Republic of China;Tanghekou Middle School, Beijing, People’s Republic of China

关键词：

Air pollution;Particulate matter (PM);Physiological equivalent temperature (PET);Built environment;Urban design;VEGETATION;POLLUTION;FORES

摘要：

Abstract Together, the heat island effect and air pollution pose a threat to human health and well-being in urban settings. Nature-based solutions such as planting trees are a mitigation strategy to improve outdoor temperatures (thermal comfort) and enhance air quality in urban areas. In this study, outdoor thermal comfort, and particulate matter levels were compared between treeless and treed areas to provide a better understanding of how street trees improve thermal comfort and air quality. Street trees decreased the physiological equivalent temperature from 46.3 to 44.2 °C in summer but increased it from 36.4 to 37.5 °C in autumn. Air temperature and relative humidity contributed more in summer while wind speed contributed more in autumn. Particulate matter concentrations were negatively correlated with physiological equivalent temperature in summer but not in autumn. The presence of trees decreased concentrations of fine particulate matter in hot summer conditions but increased in hot autumn conditions. The presence of trees increased coarse particulate matter in very hot summer conditions in summer and in hot autumn conditions. Overall, the layout of trees in urban street canyons should consider the trade-off between outdoor thermal comfort and air quality improvement.

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Coupling outdoor air quality with thermal comfort in the presence of street trees: a pilot investigation in Shenyang, Northeast China

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