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首页> 外文期刊>Journal of Arboriculture >Effects of street tree shade on asphalt concrete pavement performance.
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Effects of street tree shade on asphalt concrete pavement performance.

机译:街道树荫对沥青混凝土路面性能的影响。

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摘要

Forty-eight street segments were paired into 24 high- and low-shade pairs in Modesto, California, U.S. Field data were collected to calculate a Pavement Condition Index (PCI) and Tree Shade Index (TSI) for each segment. Statistical analyses found that greater PCI was associated with greater TSI, indicating that tree shade was partially responsible for reduced pavement fatigue cracking, rutting, shoving, and other distress. Using observed relations between PCI and TSI, an unshaded street segment required 6 slurry seals over 30 years, while an identical one planted with 12 crape myrtles (Lagerstroemia indica, 4.4 m [14 ft] crown diameter) required 5 slurry seals, and one with 6 Chinese hackberry (Celtis sinensis, 13.7 m [45 ft] crown diameter) required 2.5 slurry seals. Shade from the large hackberries was projected to save $7.13/m2 ($0.66/ft2) over the 30-year period compared to the unshaded street..
机译:在美国加州的莫德斯托,将48个街道路段分为24对高低阴影对。收集现场数据以计算每个路段的路面状况指数(PCI)和树荫指数(TSI)。统计分析发现,更大的PCI与更大的TSI相关​​联,表明树荫在一定程度上是造成路面疲劳开裂,车辙,推挤和其他困扰的原因。根据观察到的PCI和TSI之间的关系,在30年内,无阴影的街道段需要6个泥浆封条,而一个种植12个绉桃金娘(印度紫薇,4.4 m [14 ft]冠状直径)的相同街区则需要5个泥浆封条,另外一个6个中国朴树(Celtis sinensis,树冠直径为13.7 m [45 ft])需要使用2.5个泥浆密封垫。与不带阴影的街道相比,大型朴树的阴影预计在30年内可节省$ 7.13 / m2($ 0.66 / ft2)。

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