湿热地区垂直绿化长短波辐射特性研究

Research on Long and Short Wave Radiation Characteristics of Vertical Greening in Hot and Humid Regions

垂直绿化是缓解城市热岛效应和降低建筑能耗的一种有效措施。本文分析了垂直绿化植物冠层的辐射传递过程,探究了垂直绿化和建筑表面长短波辐射的变化特征。采用Lambert-Beer定律分析了垂直绿化植物冠层对太阳辐射的透过和反射特性,同时采用Stefan-Boltzmann定律分析了植被冠层的长波辐射透射特性。最后对入射、透过和反射的太阳辐射及透过的长波辐射进行了验证,误差分析的结果显示上述计算方法在描述垂直绿化长短波辐射特性方面具有良好的准确度。

Vertical greening is an effective measure to alleviate the urban heat island effect and reduce building energy consumption.This paper analyzed the radiation transmission process of the plant canopy for vertical greening,and explored the change characteristics of greening and building surface long and short wave radiation.The Lambert-Beer law was used to analyze the transmission and reflection characteristics of solar radiation of vertical green plant canopy,and the Stefan-Boltzmann Law was used to analyze the long wave radiation transmission characteristic of the vegetation canopy.Then,the incident,transmitted and reflected short-wave radiation and transmitted long-wave radiation were verified.The results of error analysis show that the above calculation method has good accuracy in describing the long-and short-wave radiation characteristics of vertical greening.