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上海乡土树种城市园林适宜性评价

Evaluation of the suitability of Shanghai's native tree species for urban landscaping

  • 摘要: 为了在城市园林中更好地应用乡土树种,运用实地调查法和文献分析法对上海乡土树种的观赏性、抗性、养护管理以及生态效益进行统计分析,并基于这4个指标评价其在城市园林应用中的适宜性。本研究共统计了47科98属150种上海乡土树种,将其分为常绿和落叶灌木、常绿和落叶木质藤本、常绿和落叶乔木、半常绿灌木、半常绿木质藤本8种生活型,其中落叶树种占75.3%,常绿乡土树种占24.7%。城市园林适宜性指数在60以上的乡土树种有73种,占比48.7%。乡土树种之间在观赏性、抗性、养护管理和生态效益4个指标间存在利弊共趋现象,可有选择地参考适宜性指数较高的树种。本研究结果可为城市园林近自然群落营造过程中乡土树种的选择提供参考。

     

    Abstract: To better utilize native tree species in urban landscaping, this study conducted field investigations and literature analysis to evaluate the ornamental value, stress tolerance, maintenance requirements, and ecological benefits of native tree species in Shanghai. The suitability of these species for urban landscaping was assessed based on these four criteria. A total of 150 native tree species from 98 genera and 47 families were documented in Shanghai, categorized into 8 life-form groups: evergreen shrubs, deciduous shrubs, evergreen woody vines, deciduous woody vines, evergreen trees, deciduous trees, semi-evergreen shrubs, and semi-evergreen woody vines. Deciduous species comprised 75.3% of the total, with evergreen species accounting for the remaining 24.7%. Seventy-three species (48.7%) had a suitability index above 60. Our results revealed trade-offs among the four criteria (ornamental value, stress tolerance, maintenance requirements, and ecological benefits) across different native species. Therefore, prioritizing species with higher suitability indices is recommended for practical applications. The findings provide evidence-based selection criteria for native tree species in establishing near-natural plant communities within urban landscapes.

     

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