中文摘要：

城市化改变了城市的热环境，适宜的规划设计策略可以缓解热岛效应等城市热环境问题对建筑节能、人体热舒适等方面带来的负面效应。本文针对城市高层居住区规划设计策略对小区室外热环境的影响，进行了实地观测和参数化的数值模拟，以验证和量化不同设计策略对室外热岛和热舒适度的影响机制和程度。研究发现，增加树木数量和树冠层叶密度和覆盖率对降低城市热岛以及改善人体热舒适都表现最佳，增加草坪覆盖效果次之，而提高地面的硬质铺面反射率应注意控制在合理区间，否则虽然对降低城市热岛有一定效果，但可能提高行人区域的辐射温度从而影响行人的日间热舒适。研究旨在为改善我国南方地区城市小区热环境的城市与建筑设计策略研究提供参考依据。

英文摘要：

Urbanization changed the city＇s thermal environment,and proper planning and design strategies could ease negative effects of heat island effect and other urban thermal environmental issues on energy conservation of buildings, human thermal comfort, etc. This paper conducted field observation and parameterized numerical simulation of the effect of planning and design strategies of urban high-rise residential quarters on outdoor thermal environment thereof to verify and quantify the mechanism and degree of effect of different design strategies on outdoor heat island and thermal comfort. Research findings showed that increasing the number of trees and density and coverage of leaves on the crown canopy was the best to reduce urban heat island and to improve human thermal comfort, followed by increasing turf coverage;attention should be paid to control of a reasonable interval in order to improve hard pavement surface reflectance, otherwise, there was a certain effect on reducing urban heat island, it might increase radiation temperature of pedestrian area ,which would affect daytime thermal comfort of pedestrians ,though. The study was intended to provide reference for the study of urban and architectural design strategies of thermal environment in urban residential quarters in the south of China.