Evaluation of Planting Design of ‘Pair Street Trees’ in TSUKUBA SCIENCE CITY

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  • 筑波研究学園都市における2本立街路樹に関する植栽デザイン的評価
  • ツクバ ケンキュウ ガクエン トシ ニ オケル 2ホンダテ ガイロジュ ニ カ

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Abstract

In TSUKUBA SCIENCE CITY, street trees were planted in pairs to make rapid greening and unify crowns. Though it was characteristic design for planting, it becomes clear that not every tree could accomplish the primary design concept after 20years' observation. This paper considers the methodology of planting design inspecting the design concept and its result by means of research of tree's vitality and evaluation of these appearances. As a result, we found that the impact of pair planting design is various in species, for example, Acer buerger ianum and Quercus myrsinaefolia tend to disturb each other but Liriodendron tulipiferaand Liqu idambar styraciflua does not have such tendency. These analysis shows that it is necessary to co ncern about secular changes and control the way of maintenance for street trees.

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