Cooling and physiology with Parthenocissus quinquefolia on walls oriented in cardinal directions
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摘要: 研究攀缘植物对墙体的降温作用及生理学机制,为垂直绿化的植物选择及生态效应的定量化研究提供依据,以不同朝向的五叶地锦Parthenocissus quinquefolia为材料,对墙体温度,蒸腾速率,冠层温度,叶片对入射光的反射、透射及以叶绿素荧光参数表示的潜在光能利用能力等指标进行分析。结果表明,不同朝向的五叶地锦对墙体的降温效果存在显著差异,东、南、西、北4个朝向日平均降温值依次为(5.4 0.61),(3.3 0.48),(3.1 0.47)和(0.48 0.07) ℃。降温值除受墙体温度(r = 0.879 4)影响外,和蒸腾速率(r = 0.770 3)、冠层温度(r = 0.645 8)和透射率(r = 0.504 4)及叶绿素荧光参数F0(r = 0.475 8)等生理生态指标存在显著的正相关关系。同时表明,五叶地锦不适于北向墙体绿化。因此,在垂直绿化选择植物种时,应同时考虑植物的蒸腾速率及其对光的反射、透射及利用能力。图1表5参20Abstract: To determine differences in cooling as well as physiological characteristics from Parthenocissus quinquefolia covering four walls facing north,east,south,and west,a non-contact infrared temperature thermometer (Optris Minisight ms+),an Li-1600 steady state porometer,and a hand-held OS-30p chlorophyll fluorometer were employed to examine temperatures of a bare wall,a plant-covered wall,a canopy,and a leaf as well as determine ambient air temperature,transpiration and stomatal resistance,leaf albedo and transmission,and basic parameters of P. quinquefolia chlorophyll fluorescence:Fo,Fm,and Fv /Fm, and a correlation analysis were also utilized. Results of day temperature deviations showed plant-covered walls had significantly greater mean cooling values for east(P<0.05),south(P<0.05),and west(P<0.05) orientations compared to bare walls. There were also significant positive correlations between cooler wall temperatures and bare wall temperatures (r = 0.879 4,P<0.000 1),transpiration (r = 0.770 3,P <0.01),canopy temperature (r = 0.645 8,P<0.01),leaf transmission (r = 0.504 4,P<0.05),and Fm (r = 0.475 8,P<0.05). Thus,plants covering east-,south-,and west-facing walls would be beneficial. Additionally,transpiration,leaf albedo,leaf transmission,Fm,and Fv /Fm could be used as selection indexes.[Ch,1 fig. 5 tab. 20 ref.]
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Key words:
- botany /
- Parthenocissus quinquefolia /
- walls /
- cooling effect
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2010.04.007
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