| 摘要: |
| 该研究通过对柳州市区主要道路园林绿化全面踏勘,在四城区中筛选出68条道路行道树进行现场调查和综合评价。结果表明:(1)柳州市行道树共有28种,隶属于17科21属,常绿树种与落叶树种比例及乡土树种与外来树种比例合理。(2)柳州市行道树中小叶榕和黄葛榕在各城区应用频度较高,树种组成结构相对单一。(3)季相树种在各城区应用频度不均衡,部分城区春季景观营造效果显著,而夏秋冬季相景观效果不显著。(4)绿化达标率和林荫路推广率离国家生态园林城市还有较大差距,物种丰富度和多样性指数有待提高。建议加大乡土树种的应用与推广,提高各城区物种丰富度及季相树种的应用,营造城市道路特色季相景观。该研究成果提出了发展乡土树种、丰富树种多样性及季相景观营造的技术建议,对柳州市行道树树种规划和建设提供了科学依据。 |
| 关键词: 行道树, 树种, 使用频度, 树高, 胸径, 健康状况 |
| DOI：10.11931/guihaia.gxzw201708036 |
| 分类号:Q948 |
| 文章编号:1000-3142(2018)03-0370-11 |
| Fund project:国家自然科学基金(3120030); 2015年度广西壮族自治区高等学校科学研究项目(KY2015YB485)[Supported by the National Natural Science Fundation of China(3120030); the Research Program of Science of Guangxi University in 2015]。 |
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| Resource investigation and structure characteristic analysis of avenue trees in Liuzhou City |
|
HUANG Ting1, LI Zhao2*, CHEN Jianquan3, LUO Yinhua4, LUO Yinghua4
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1. College of Xingjian Liberal Arts, Guangxi University, Nanning 530005, China;2. Garden Bureau in Liuzhou City, Liuzhou 545001,
Guangxi, China;3. Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600,
Guangxi, China;4. Forestry College, Guangxi University, Nanning 530005, China
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| Abstract: |
| Through the comprehensive survey of the main avenue landscape greening in Liuzhou, 68 road trees were selected in the four urban districts to conduct on-site investigation and comprehensive evaluation. The results showed that there were 28 species of avenue trees in Liuzhou, belonging to 17 families and 21 genera. The proportion of evergreen tree species and deciduous tree species, native tree species and exotic tree species was reasonable. The frequency of application of Ficus microcarpa and F. virens in the avenue trees of Liuzhou City was higher than that in the urban areas, and the structure of tree species was relatively simple. The application frequency of seasonal tree species in various urban areas was not balanced, and the effects of spring landscape construction in some urban areas were significant, while the effects of summer and winter seasonal landscape were not significant. There was still a big gap between the standard rate of afforestation and avenue promotion rate from the national ecological garden city. Species richness and diversity index need to be improved. It was suggested that the application and popularization of native tree species should be increased, the species richness and the application of seasonal tree species in urban areas should be improved, and the seasonal landscape of urban roads should be built. Therefore, we put forward technical suggestions for developing native tree species, rich tree species diversity and seasonal landscape construction, and provided scientific basis for planning and construction of avenue tree species in Liuzhou City. |
| Key words: avenue trees, tree species, frequency of use, tree height, DBH, health status |
