广州公园植物群落物种组成及多样性研究

Plant species structure and diversity of plant communities in Guangzhou parks

通过对广州城区10个公园中92块样地进行调查,旨在探讨不同公园中植物群落物种构成及其多样性。调查显示:样地植物种类较为丰富,共出现维管植物275种,以被子植物为主;样地中乔木共计143种;在乔木层中,有6个树种出现频度超过50%,8种灌木频度超过50%,12种草本植物频度超过50%;而不同公园间草本层植物多样性差异较小,但是,越秀公园、雕塑公园和天河公园等面积较大的公园乔木多样性较低;与乔木层相比,灌木层植物多样性普遍偏低在乔木层。因此需要进一步加强景观植被中灌木植物的配置,进而提升城市公园森林美景。

To study the plant species structure and diversity of plant communities in different urban parks, 92 sites from 10 urban parks of Guangzhou were investigated. The results showed that there were abundant plant species in all sites with 275 vascular plants, most of which were angiospermaes. A total of 143 tree species were found in all the sites sampled, including 6 tree species with frequency more than 50%. And 8 and 12 species showed a high frequency（〉50%） in shrub and herb layers, respectively. The 10 parks varied slightly in plant species diversity in the herb layer. However, only those large parks such as Yuexiu Park, Diaoshu Park, and Tianhe Park demonstrated relatively lower tree diversity as compared to those of herbs and shrubs. Moreover, the plant diversity was generally lower in the shrub layers. Therefore, the plant configurations in the shrub layer should be improved to upgrade the beauty of forest landscapes in Guangzhou parks.