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对四川都江堰龙池地区珙桐群落进行样方调查，并调查了散生的珙桐种群。分析了珙桐群落的植物区系构成；从样方的物种构成、重要值排列、群落结构三方面的相似性来分析并划分珙桐群落类型，并讨论群落不同层次及结构因子间的相关性；比较不同珙桐群落中乔木层常见种的径级结构，探讨珙桐在群落中的地位及更新状况与群落演替进程间的关系；对本地珙桐的有性和无性繁殖特征进行分析，并与都江堰、湖北鹤峰、五峰的珙桐种群的径级结构作比较。从分布、生长和更新繁殖来看，都江堰龙池地区属于珙桐分布的次适宜区，珙桐目前在本地能够较稳定地维持其存在，但利用有性繁殖来实现其种群发展的条件则很不可靠。
A quadrat investigation was conducted on the Davidia involucrata community in Longchi, Dujiangyan, Sichuan Province, and the populations of Davidia involucrata were surveyed. The flora of the Davidia involucrata community was analyzed. Based on the similarity of the species composition, the importance value arrangement and the community structure of the Davidia involucrata community, the types of the Davidia involucrata community were analyzed and the correlations between the different levels and the structure factors of the community were discussed ; Comparison of diameter-class structure of common tree species in different Davidia involucrata communities, to discuss the relationship between the status of Davidia involucrata in the community and the process of community succession; To analyze the characteristics of sexual and asexual reproduction of the native Davidia involucrata; And compared with the diameter structure of the Davidia involucrata populations in Dujiangyan, Hubei Hefeng and Wufeng. From the perspective of distribution, growth and reproduction, the Longchi area in Dujiangyan belongs to the sub-suitable area for the distribution of Davidia involucrata. Davidia involucrate currently maintains its existence locally more stably, but the conditions for exploiting sexual reproduction to achieve its population development are very Unreliable.