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首页> 外文期刊>Berichte des Meteorologischen Institutes der Universitat Freiburg >Comparative study of trees impact on human thermal comfort in urban streets under hot-arid and temperate climates
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Comparative study of trees impact on human thermal comfort in urban streets under hot-arid and temperate climates

机译：干旱和温带气候下树木对城市街道人类热舒适性影响的比较研究

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The paper compares the impact of trees on human thermal comfort in contrasting temperate and hot-arid urban environments. Studies were conducted on urban bare and vegetated streets in a residential area in Freiburg, Germany (temperate climate) and in the city area of Beer Sheva,Israel (hot-dry climate), during the summer of 2009. The simulation tool for thermal comfort analysis is based on the physiologically equivalent temperature, PET, a widely used thermophysiological comfort index. PET simulations were compared with in situ measurements of humanbiometeorological variables and interviews of pedestrians recorded on well-tested questionnaires,in order to evaluate pedestrian perception of ambient thermal environment. Pedestrian perception was used to evaluate the suitability of the human thermal index PET for local populations in the two climates. PET values for the vegetated streets were lower than for bare streets indicating the trees' potential to reduce heat stress to a level of 28℃ (compared to 41℃ at a bare site in the same street) at Freiburg and to 29℃ (compared to 46℃ at a bare street) at Beer-Sheva. Thus, a larger impact on heat stress was observed in the hot dry region than in the temperate one. Statistical analyses of the questionnaires in both cities showed the better adaptation of pedestrians in Beer Sheva to the thermal load.
机译：本文在温带和炎热的城市环境中对比了树木对人类热舒适性的影响。在2009年夏季，对德国弗赖堡（温带气候）居民区和以色列比尔谢瓦（热干气候）市区的城市裸露和植被街道进行了研究。用于热舒适的模拟工具分析是基于生理等效温度PET（一种广泛使用的热生理舒适指数）进行的。将PET模拟与人为气象学变量的原位测量结果以及在经过良好测试的问卷中记录的行人访谈进行了比较，以评估行人对周围热环境的感知。行人感知被用来评估人类热指数PET在两种气候下对当地居民的适用性。植被街道的PET值低于裸露街道的PET值，表明树木有潜力将弗莱堡的热应力降低到28℃（相比之下，同一条街道的裸露地点为41℃），降低到29℃（相比之下，贝尔谢瓦（Beer-Sheva）在光秃秃的街道上达到46℃。因此，在热干燥地区比在温带地区对热应力的影响更大。对两个城市的调查表进行统计分析，结果表明，比尔谢瓦的行人对热负荷的适应性更好。

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