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根据3种厚度屋面绿化卷材根系层土壤温度、自然条件下的土壤温度和附近气象站大气温度观测资料,采用对比分析、线性回归等方法,对不同屋面绿化卷材根系层土壤温度的变化特征进行了研究。结果表明:屋面绿化卷材根系层土壤温度年变化规律与大气温度年变化规律基本一致;卷材具有一定的隔热保温作用,且随着薄膜厚度的增加,绿化卷材保温隔热效果越明显;不同型号卷材根系层土壤温度的日变幅随薄膜厚度的增加而减小;根系层土温日变幅与厚度关系可拟合成指数函数;不同厚度屋面卷材根系层土壤温度同大气温度之间均存在极显著的线性关系。
According to the observation data of soil temperature at the root layer of three types of roofing green roofing membrane, the temperature under natural conditions and the atmospheric temperature near the meteorological station, comparative analysis and linear regression were used to analyze the change of soil temperature Were studied. The results show that the law of annual variation of soil temperature in the root layer of roof greening membrane is basically consistent with the annual variation of atmospheric temperature. The coil has a certain thermal insulation effect. With the increase of membrane thickness, the thermal insulation effect of greening membrane is more obvious ; The daily variation of soil temperature in different types of coil roots layer decreases with the increase of film thickness; the relationship between daily temperature variation and thickness of root layer soil temperature can be fitted to an exponential function; the temperature of root layer soil layers with different thickness of roofing membrane is the same as the atmospheric There is a very significant linear relationship between temperature.