摘要
为探讨屋顶绿化的滞尘效应和不同材质的热辐射效应,试验进行了屋顶滞尘试验研究。滞尘测试结果表明:花园式屋顶绿化滞尘量平均为25.1349g/m2,比简单式屋顶绿化滞尘率高约10个百分点。热辐射对比测定得出:裸露屋顶热像值明显高于绿化屋顶,屋顶绿化是缓解城市热岛效应的关键手段。屋顶单一植物绿化,其热像值高于多种植物复层结构群落式绿化;佛甲草等景天属植物的热像值高于草坪地被植物,草坪地被植物的热像值高于乔灌木;植物花体部分的热像值高于叶体部分;枯死植物热像值明显高于活体植物;呼吸蒸腾作用弱的植物热像值高于呼吸蒸腾作用旺盛的植物。
To study the dust effect of roof greening and the thermal effect of different material,experiment on the roof. The dust retention effect determination,garden roof greening dust catching quantity averaged 25.1349g/m^2; and the garden type dust removal rate is higher than the simple roof greening were about 10%. The results show that the effect of roof greening were significant,provides the calculation parameters for the city environmental protection. Through the comparative measurement of thermal radiation： Exposed roof thermal value is much higher than the roof greening,roof greening is the key means to alleviate urban heat island effect. The roof greening greening the single plant varieties,thermal value is higher than the plant complex layer structure of community greening; seduce lineare,thermal value is higher than the ground cover plants,ground cover plants thermal value higher than shrubs; Thermal plant body part is higher than the value of the leaf body part; dead plant thermal imaging was significantly higher than that of living plant; Respiratory transpiration weak plant thermal value is higher than the respiratory exuberant transpiration plant.
出处
《河北林业科技》
2017年第1期10-14,共5页
Journal of Hebei Forestry Science and Technology
基金
北京市科学技术委员会项目(Y060417040531)
关键词
屋顶绿化
滞尘
热辐射
热像值
滞尘量
Roof greening
Dust detention
Thermal radiation
Thermal value
Dust catching quantity
