摘要
针对目前城市建设中普遍存在的盲目绿化、缺乏理论支持的现状,该文编制了绿化状态下的城市街谷热过程动态模拟程序,该程序包括一个三维街谷能量交换模型和一个植被能量交换模型,并将模拟结果用通用的环境评价指标量化显示以方便工程使用。在此基础上,通过大量的数值试验,比较了乔木、灌木和草坪等植被形态对街谷热环境的不同影响以及叶面积指数LAI的差异对街谷热环境的影响,从数据出发归纳出植被对环境的作用规律,为科学合理地优化城市绿化设计改善户外环境提供了理论基础。
Contmposing the blindness in greening which exists in the present urban construction, a simulation programme for the themal environment of steer canyon with greening was developed, which is composed of an energy exchange model for steet canyon and an exchange model for vegetation. The simulation results were indicated by general index for environmental quality assessment, which is pragmatic for designer. Through lots of numerical experiments based on this programme, the effect of the vegetation configurations such as tree, scrub and lawn and the vegetation species such as different LAI（Leaf Area Index） was compared quantitatively. Finally the greening proposal was given by data in this paper. The work of this paper lays a theoretical foundation of optimizing greening planning.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2009年第8期1013-1017,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(50608003)
关键词
城市街谷
数值模拟
绿化形式
叶面积指数
平均辐照度
urban street canyon
numerical simulalation
vegetation configurations
LAI （Leaf Area Index）
average illumination
