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首页> 外文期刊>Journal of Arboriculture >Root growth beneath sidewalks near trees of four genera
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Root growth beneath sidewalks near trees of four genera

机译：四属树旁人行道下的根系生长

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摘要

Four genera of trees from four different plant families located in Cincinnati. Ohio, U.S., were examined: Gleditsia (honeylocust), Koelreuteria (goldenraintree), Quercus (oak), and Zelkova (zelkova). The trees were planted in tree lawm 3.5 m (11.5 ft) or less in tree lawn width. Approximately 1,100 sidewalk joints near the trees planted within the last 20 years were observed for the presence of a root. The incidence of one or more roots, 1cm (3/8 in.) in diameter or larger growing under the sidewalk at sidewalk joints within 1.8 m (6 ft) of the mam stem was noted. The probability of finding a root growing underneath the sidewalk was modeled against the time since the tree was planted, trunlf diameter, and tree lawn width. It was noted that the probability of finding a root approached 100 percent as trunk diameter approached 30 cm (12 in.), with some variation among genera. Gleditsia developed roots growing beneath the sidewalk at the smallest trunk diameter, followed by Zelkova, Koelreuteria, andQuercus. Time since planting and tree lawn width were less significant predictors of root presence than trunk diameter. Overall, Quercus produced the fewest roots of the four genera that were detected beneath the sidewalk.
机译：来自辛辛那提的四个不同植物科的四个树属。在美国俄亥俄州进行了检查：皂角（honeylocust），Koelreuteria（goldenraintree），Quercus（oak）和Zelkova（zelkova）。将树木种植在树木草坪宽度不超过3.5 m（11.5 ft）的树皮中。在过去的20年中，观察到树木附近约有1100个人行道关节处有根。注意到在人行道上距哺乳动物茎杆1.8 m（6英尺）以内的人行道下有一个或多个直径为1cm（3/8英寸）或更大的根生长。根据自植树以来的时间，树干直径和树木草坪宽度对在人行道下发现根生长的可能性进行建模。值得注意的是，当树干直径接近30厘米（12英寸）时，找到根的可能性接近100％，并且属间有所差异。皂角的根部生长在人行道下方，树干直径最小，其次是Zelkova，Koelreuteria和Quercus。自种植以来的时间和树木草坪的宽度对根系存在的影响比对树干直径的影响要小。总体而言，栎属在人行道下被发现的四个属中最少的根。

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