With the increasing of pedestrian bridge in the city, usage of vertical greenery has become a new breakthrough.This paper discussed the feasibility of vertical greenery in existing pedestrian bridge reconstruction from 5 aspects such as function, space reconstruction, new material application, environment and plant configuration, taking Xiamen Haicang District pedestrian bridge landscape upgrade as an example .%随着城市已建人行天桥的逐渐增多，利用立体绿化的设计手法改造提升已建天桥已成为新的突破口。下面就以笔者参与的厦门海沧区人行天桥景观提升设计为例，从功能新增、空间重构、材料运用、环境营造及植物配置5个方面来探讨立体绿化在城市已建人行天桥改造中的运用可能。
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