Ma Xuan, Zhang Lei, Guo Mi, Zhao Jingyuan
Department of Architecture, Chang'an University, Xi'an, China.
Environ Sci Pollut Res Int. 2021 Jul;28(28):38406-38425. doi: 10.1007/s11356-021-13179-z. Epub 2021 Mar 17.
Increasing urban heat island and global warming have aroused serious thermal environmental problems and even harm people's thermal health. Because of the importance in people's daily life, a commercial pedestrianized block represents a symbol of a city or metropolis; therefore, focusing the attention on the thermal environment in such regions is very necessary. Most of the researches on the urban thermal environment are calculated by remote sensing data; limited by the low spatial resolution of remote sensing image, it may not obviously reflect the true thermal environment of the research site, especially in some microscale regions. Based on this, the new software ENVI-met is developed to research the thermal environment and forecast people's thermal sensation in a microscale region. Therefore, the objective of this study aims at conducting field measurement and numerical simulation to assess the thermal environment of a typical commercial pedestrianized space in southern China and assess the different urban design parameters in ameliorating the urban heat island effect. Our final results demonstrate a quantitative evidence for establishing a comprehensive standard for improving the thermal environment in a microscale region, and this study also can be a supplementary in the research field about improving thermal health.
城市热岛效应加剧和全球变暖引发了严重的热环境问题，甚至危害人们的热健康。由于在人们日常生活中的重要性，商业步行街代表着一个城市或大都市的象征；因此，关注此类区域的热环境非常必要。大多数关于城市热环境的研究是通过遥感数据计算得出的；受遥感影像低空间分辨率的限制，它可能无法明显反映研究地点的真实热环境，尤其是在一些微观区域。基于此，开发了新软件ENVI-met来研究热环境并预测微观区域内人们的热感觉。因此，本研究的目的是进行实地测量和数值模拟，以评估中国南方一个典型商业步行空间的热环境，并评估不同城市设计参数对缓解城市热岛效应的作用。我们的最终结果为建立改善微观区域热环境的综合标准提供了定量依据，本研究也可为改善热健康的研究领域提供补充。
