摘  要

城市化进程不断推进，城市道路向空间发展，道路立体交叉桥应时而生。广州交通系统较发达，构建了许多的立体交叉桥和人行天桥，这就创造了新的绿化空间。

本文通过对广州市内环路部分立交桥绿化植物种类及其配置应用进行调研，将立交桥绿地分成桥荫、桥柱、桥体防护栏、桥体墙面及绿岛等5部分，对其绿化植物的科属种、生活型、木本植物生活形态、观赏特性、季相、乡土性及应用频率等进行分析；用特尔斐法（Delphi Model）对100种植物进行综合评价，选择适合广州市立交桥绿化的植物种类。主要研究成果包括：

（1）对广州市内环路立交桥绿化植物种类及组成进行分析。广州市内环路立交桥主要绿化植物有115种（含亚种、变种型等以下的分类单位），隶属于54科92属；以木本植物为主体，乔、灌、草的搭配较为合理，但藤本植物种类较少；常绿树种与落叶树种的搭配较合理，以常绿树种为主，落叶树种为辅；观赏特性方面，观花植物、观叶植物居多，观枝干、树形植物次之，观果、观根系植物最少；立交桥绿化植物的季相比较明显，主要表现在植物的花；乡土植物应用率偏低。

（2）通过调研与文献查阅，选择出100种常用绿化植物，运用特尔斐法，从植物的生态适应性、抗污染、观赏性、生态效益、经济效益等方面出发，建立广州市立交桥绿化植物的综合评价体系，对100种植物进行评价，从中选出I级立交桥绿化植物6种，II级植物51种，III级植物42种；IV级植物1种。

关键词：广州市，立交桥，绿化，植物种类，配置应用

Guangzhou Inner Ring Road Overpass Greening Plants Choice and Application of Configuration

With the development of urbanization process, the amount of vehicles increases rapidly, which promoted the birth of overpasses. Guangzhou has a developed transportation system with lots of overpasses and pedestrian bridges constructed, which created new space for city greening.

This paper will show you the analysis about the composition of genera and species, life form, ornamental characteristics, seasonal aspects, localism and application frequency of greening plants of parts of the overpasses in the inner ring road of Guangzhou, which bases on a survey of greening plants choices and application of configuration. What’s more, adopt the Delphi expert evaluation method to make a comprehensive evaluation of 100 species of greening plants with the purpose of selecting the suitable plants to green overpasses in Guangzhou. The main research achievements are as follows.

（1）Analysis the main types of green plants and composition under the overpasses in Guangzhou. There are mainly 115 greening plant species under the overpasses in Guangzhou (including the following classification units, such as subspecies, varieties), belonging to 92 genera and 54 families. The woody plant is the main, with the feasible proportion of the tree, shrub and herb plants, but the poor variety of vine plants. What’s more, the proportion of evergreen and deciduous plants is reasonable, as evergreen plants mainly and deciduous plants subsidiarily. As for ornamental characters, flower ornamentals and foliage ornamentals are more than that of limb and tree form, with the fruit ornamentals and root ornamentals are applied in a low rate. The seasonal aspect is comparatively distinct, which mainly performs at flowers followed by leaves, and not obviously in fruit. The application of indigenous plant is pretty low.

（2）Select 100 species of plants based on field investigation and looking up books, with the Delphi expert evaluation method, to build a comprehensive evaluation system of Guangzhou overpasses greening plants from which could judge the plants selected, with the result of 6 species of level I, 51 of level II,42 of III and 1 of level IV.

Key words:Guangzhou,overpass, greening, plants species, application of configuration

摘  要

城市化进程不断推进，城市道路向空间发展，道路立体交叉桥应时而生。广州交通系统较发达，构建了许多的立体交叉桥和人行天桥，这就创造了新的绿化空间。

本文通过对广州市内环路部分立交桥绿化植物种类及其配置应用进行调研，将立交桥绿地分成桥荫、桥柱、桥体防护栏、桥体墙面及绿岛等5部分，对其绿化植物的科属种、生活型、木本植物生活形态、观赏特性、季相、乡土性及应用频率等进行分析；用特尔斐法（Delphi Model）对100种植物进行综合评价，选择适合广州市立交桥绿化的植物种类。主要研究成果包括：

（1）对广州市内环路立交桥绿化植物种类及组成进行分析。广州市内环路立交桥主要绿化植物有115种（含亚种、变种型等以下的分类单位），隶属于54科92属；以木本植物为主体，乔、灌、草的搭配较为合理，但藤本植物种类较少；常绿树种与落叶树种的搭配较合理，以常绿树种为主，落叶树种为辅；观赏特性方面，观花植物、观叶植物居多，观枝干、树形植物次之，观果、观根系植物最少；立交桥绿化植物的季相比较明显，主要表现在植物的花；乡土植物应用率偏低。

（2）通过调研与文献查阅，选择出100种常用绿化植物，运用特尔斐法，从植物的生态适应性、抗污染、观赏性、生态效益、经济效益等方面出发，建立广州市立交桥绿化植物的综合评价体系，对100种植物进行评价，从中选出I级立交桥绿化植物6种，II级植物51种，III级植物42种；IV级植物1种。

关键词：广州市，立交桥，绿化，植物种类，配置应用

Guangzhou Inner Ring Road Overpass Greening Plants Choice and Application of Configuration

With the development of urbanization process, the amount of vehicles increases rapidly, which promoted the birth of overpasses. Guangzhou has a developed transportation system with lots of overpasses and pedestrian bridges constructed, which created new space for city greening.

This paper will show you the analysis about the composition of genera and species, life form, ornamental characteristics, seasonal aspects, localism and application frequency of greening plants of parts of the overpasses in the inner ring road of Guangzhou, which bases on a survey of greening plants choices and application of configuration. What’s more, adopt the Delphi expert evaluation method to make a comprehensive evaluation of 100 species of greening plants with the purpose of selecting the suitable plants to green overpasses in Guangzhou. The main research achievements are as follows.

（1）Analysis the main types of green plants and composition under the overpasses in Guangzhou. There are mainly 115 greening plant species under the overpasses in Guangzhou (including the following classification units, such as subspecies, varieties), belonging to 92 genera and 54 families. The woody plant is the main, with the feasible proportion of the tree, shrub and herb plants, but the poor variety of vine plants. What’s more, the proportion of evergreen and deciduous plants is reasonable, as evergreen plants mainly and deciduous plants subsidiarily. As for ornamental characters, flower ornamentals and foliage ornamentals are more than that of limb and tree form, with the fruit ornamentals and root ornamentals are applied in a low rate. The seasonal aspect is comparatively distinct, which mainly performs at flowers followed by leaves, and not obviously in fruit. The application of indigenous plant is pretty low.

（2）Select 100 species of plants based on field investigation and looking up books, with the Delphi expert evaluation method, to build a comprehensive evaluation system of Guangzhou overpasses greening plants from which could judge the plants selected, with the result of 6 species of level I, 51 of level II,42 of III and 1 of level IV.

Key words:Guangzhou,overpass, greening, plants species, application of configuration