This study assessed outdoor thermal environments with and without leafy shade on university campuses of. Subjective opinions of interviewees were obtained via a questioner survey, while objective climatic factors were measured in field monitoring. A total of 888 valid questionnaires were collected. The importance of plants to outdoor thermal environment was highlighted by the reports of thermal sensations from users of outdoor facilities. The analysis results from probability regression indicated that neutral temperatures are 24.5℃ (SET(superscript *)) in sites with leafy shade and 22.6℃ (SET(superscript *)) in sites without plant shading. The upper limit of acceptable temperature in non-shady sites was 1.6 ℃ lower than that of shaded sites. Radiant heat imposes negative sensations on subjects in the subtropical zone. Understandably, plant shade widens the thermal comfort zone of outdoor spaces, and thus enhances utilization by local residents.
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