Present study aims to find out how evergreen tree species planted in urban parks spread to nearby wild areas. We accomplished field investigation at the Duryu Park area, Daegu, where located a transitional zone between the warm-temperate and the cool-temperate zones. From 2018 to 2019, a total of 32 floristic-sociological relevés were made. Distribution patterns of tree species connected into habitat conditions were explored by canonical correspondence analysis (CCA). 10 tree species dispersed spontaneously in the study area were recognized; Nandina domestica, Euonymus fortunei, E. japonicus, Quercus acuta, Q. glauca, Q. phillyraeoides, Elaeagnus pungens, Ligustrum japonicum, Osmanthus heterophyllus, and Ilex cornuta. Most of these trees were the preferentially ornamental plants introduced in the park since 1977 and mainly bird dispersal seeds. Q. glauca and L. japonicum appeared the most predominant dispersion. Their micro-habitats are the much humid and warmer stands of the deciduous broad-leaved forests mainly. We concluded that urban gardening has been also an important agent to recover the native vegetation if introducing potential natural vegetation (PNV). The habitat-based PNV in the Daegu area arose as a critical issue for further understanding.

目前的研究旨在找出城市公园中种植的常绿乔木如何传播到附近的野生地区。我们在位于大邱的Duryu公园地区完成了野外调查，该地区位于温带和凉带之间的过渡带。从2018年到2019年，共进行了32种植物社会学相关研究。通过规范对应分析（CCA）探索了与栖息地条件相关的树种的分布模式。识别出自发分布在研究区域的10种树种；Nandina domestica，Euonymus fortunei，E. japonicus，Quercus acuta，Q. glauca，Q. phillyraeoides，Elaeagnus pungens，女贞，日本的桂花和枸骨。这些树木大多数是自1977年以来引入公园的优先观赏植物，主要​​是鸟类传播种子。Q。青冈和大号。日本血吸虫似乎是最主要的分散体。它们的微生境主要是落叶阔叶林的潮湿多温暖的林分。我们得出的结论是，如果引入潜在的自然植被（PNV），城市园艺也已成为恢复原生植被的重要媒介。大邱地区以栖息地为基础的PNV成为进一步理解的关键问题。