城市气候变化适应:利用绿化和绿化建筑提高行人热舒适度

IF 6 2区 工程技术 Q1 ENVIRONMENTAL SCIENCES
Rafeef Atawneh , Shireen Alqadi
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引用次数: 0

摘要

气候变化通过强化城市热岛效应,导致地表温度升高和热舒适降低,显著影响城市室外环境,特别是街道。长时间的高温加速了人行道和街道设施的老化,增加了维护成本,损害了城市的复原力。除了提高可达性之外,街道作为社会和经济活动的空间也发挥着重要作用。为了支持这些功能,街道设计必须营造舒适和吸引人的环境。随着人们对可持续城市设计的兴趣日益浓厚,室外热舒适的概念成为街道规划不可或缺的一部分。本文研究了在极端天气条件下(最热时期),绿化建筑立面和屋顶以及增加绿化对行人热舒适的影响。用envimet软件创建了西岸希伯伦的艾因萨拉街的数字模型,并分别应用每种策略来评估其有效性。我们进行了一项调查来验证该模型,将模拟的舒适度与用户体验相一致。结果表明,植树造林可降低气温5.3℃,平均辐射温度(MRT)降低1.4℃,生理等效温度(PET)降低0.9℃。植被覆盖率增加50%,温度降低5.3度,MRT降低1.4度,PET降低0.9度。本研究独特地将模拟与基于调查的验证相结合,以评估绿化策略对城市街道室外热舒适的影响。通过对现实环境中绿色外墙、绿色屋顶和增强植被的冷却效果提供可量化的见解,它提出了一种可持续街道设计的实用方法。这种验证方法增强了模型的可靠性和适用性,为城市规划者提高行人舒适度和支持气候变化适应提供了有价值的工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Climate change adaptation in cities: Enhancement of pedestrian thermal comfort using afforestation and greening buildings
Climate change significantly impacts the outdoor urban environment, particularly streets, by intensifying the Urban Heat Island effect, leading to higher surface temperatures and reduced thermal comfort. Prolonged heat accelerates the deterioration of pavements and street furniture, increasing maintenance costs and compromising urban resilience. In addition to enhancing accessibility, streets play a significant role as spaces for social and economic activities. To support these functions, street designs must foster comfortable and engaging environments. With growing interest in sustainable urban design, the concept of outdoor thermal comfort is integral to street planning. This paper examines the impact of greening building facades and roofs, as well as increasing afforestation, on pedestrian thermal comfort using simulation during extreme weather conditions (hottest periods). A digital model of Ein Sarah Street in Hebron, West Bank, was created in Envi-met software, with each strategy applied separately to assess its effectiveness. A survey was conducted to validate the model, aligning simulated comfort levels with user experiences. Results indicate that afforestation reduce temperature by approximately 5.3 degrees, decrease Mean Radiant Temperature (MRT) by 1.4 degrees, and lower Physiological Equivalent Temperature (PET) by 0.9 degree. Increasing vegetation cover by 50 % reduces temperature by 5.3 degrees, MRT by 1.4 degrees, and PET by 0.9 degrees. This study uniquely integrates simulation with survey-based validation to evaluate the impact of greening strategies on outdoor thermal comfort in urban streets. By offering quantifiable insights into the cooling effects of green facades, green roofs, and enhanced vegetation in real-world contexts, it presents a practical approach to sustainable street design. This validation method enhances the model's reliability and applicability, providing urban planners with a valuable tool to improve pedestrian comfort and support climate change adaptation.
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来源期刊
Urban Climate
Urban Climate Social Sciences-Urban Studies
CiteScore
9.70
自引率
9.40%
发文量
286
期刊介绍: Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following: Urban meteorology and climate[...] Urban environmental pollution[...] Adaptation to global change[...] Urban economic and social issues[...] Research Approaches[...]
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