...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Building and Environment >Assessing xeriscaping as a sustainable heat island mitigation approach for a desert city
【24h】

Assessing xeriscaping as a sustainable heat island mitigation approach for a desert city

机译：评估干燥环境作为沙漠城市的可持续热岛缓解方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Metropolitan Phoenix has been amongst the most rapidly urbanizing cities in the USA, and is also subject to an urban heat island (UHI) of significant intensity and extent There is a need to mitigate its detrimental effects through sustainable methods, such as through the application of low-water demand, xerophytic trees with broad canopies within residential yards (i.e. xeriscaping). Urban xeriscaping has the potential to reduce urban water use, urban temperatures and outdoor thermal discomfort, but evaluating its effectiveness has not been widely researched. In this study, we used a micro-scale urban climate model (ENVI-met) to generate xeriscaping scenarios in two residential areas with different existing surface vegetation cover (mesic vs. xeric). We subsequently examined the resulting impacts of xeriscaping on near-surface temperatures and outdoor thermal comfort over different spatial scales and temporal periods. Compared to existing conditions, xerophytic shade trees have strong UHI mitigation potential in existing xeric residential areas in Phoenix, with greater cooling occurring at (i.) microscales (～2.5 C) vs. local-scales (～1.1 ℃), and during (ii.) nocturnal (0500 h) vs. daytime periods (1700 h) under high xeriscaping scenarios. Conversely, increased xeriscaping resulted in net warming and increased thermal discomfort over mesic residential neighborhoods over all spatial scales and temporal periods. These varying results over different residential land cover in Phoenix therefore must be considered by stakeholders when considering xeriscaping as a UHI mitigation method.
机译：大都会凤凰城一直是美国发展最快的城市之一，并且还受到强度和程度极大的城市热岛（UHI）的影响。有必要通过可持续方法（例如通过应用需水量低，干枯的树木，在居民区内有大的冠层（即干化）。城市环境美化具有减少城市用水，城市温度和室外热不适的潜力，但是评估其有效性尚未得到广泛研究。在这项研究中，我们使用了微观尺度的城市气候模型（ENVI-met）来在两个现有地表植被覆盖不同的居住区（中性与干性）中生成干燥环境。随后，我们研究了干燥在不同的空间尺度和时间范围内对近地表温度和室外热舒适性的最终影响。与现有条件相比，在菲尼克斯现有的旱生住宅区中，旱生遮荫树具有很强的UHI缓解潜力，在（i。）微尺度（〜2.5 C）与局部尺度（〜1.1℃）以及在（ ii。）在高Xerscaping场景下的夜间（0500小时）与白天（1700小时）对比。相反，在所有空间范围和时间范围内，增加的干燥环境导致净增暖，并增加了中型居民区的热不适感。因此，利益相关者在考虑将干式转为UHI缓解方法时，必须考虑凤凰城不同住宅用地的不同结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号