硬化路面与温度场响应模型研究

硬化路面是城市热环境效应影响因素中较为重要的一个因素.笔者在研究了深圳市城市热效应的基础上,建立了一个三维动态模型对硬化路面条件下的温度场进行模拟.通过将模型的计算结果和在深圳的实测结果进行对比,发现2条曲线吻合较好,模拟结果十分接近实测结果.模型模拟结果还证明了硬化路面由于铺筑的材料具有较大蓄热、导热的能力,而且透水性差,因此温度升降都很快,对城市的热效应贡献大;城市绿化隔离带对城市温度场具有很好的调节作用,因此合理配置城市中的绿地对城市区域微热环境的改善能够起到很好的作用. 

The Model Study of Temperature Field Responding to Hard Surface Cover

The hard surface is one key factor of urban heat effect.The authors established a three-dimensional dynamic mathematic model by studying thermodynamic environment in Shenzhen City to simulate the temperature field in the case of the hard surface,and the simulating results accord with the monitoring temperature data perfectly.Furthermore,it is testified that hard surface owns more heat conduction and thermal storage and weaker hydraulic permeability than other surface and thus contributes more to the heat effect in the city and that the greenbelts could moderate the heat effect in the city.So the greenbelts should be arranged reasonably so as to improve micro heat environment in the city.