福建山樱花野生群落物种数量特征与区系分布研究

通过对福建山樱花野生群落典型样地的调查,分析了该群落植物组成、乔灌木数量特征和种子植物区系分布。结果表明,福建山樱花野生群落共有维管植物80科157属226种,但优势树种不明显,主要伴生乔灌木有拟赤杨、白花泡桐、银钟花、马尾松、青冈、构树、香桂、木和杜鹃。科、属、种区系成分都以热带成分占显著优势,群落的演化过程与泛热带及热带亚洲联系最为密切,与近代的热带大洋洲、热带非洲、北温带、东亚存在或多或少的联系,而与地中海区、西亚、中亚没有联系。群落特有现象并不十分明显,无中国特有分布科、属、种,只有腊梅科的山腊梅和杉科的杉木2属2种。

Quantitative characteristics and floristic analysis of species in wild community of Cerasus campanulata Maxim.

According to the data from the field investigation on the typical sample plots of Cerasus campanulata community in Fujian Province,Jiangxi Province and Guangdong Province,the community composition,arbor and shrub quantitative characteristics and seed plant floristic distribution were analyzed in this paper.In the community flora of Cerasus campanulata,226 species,157 genera and 80 families were found,but no outstanding predominant species exist,and main companion plants include Alniphyllum fortunei,Paulownia fortunei,Halesia macgregorii,Pinus massoniana,Cyclobalanopsis glauca,Broussonetia papyrifera,Cinnamomum subavenium,Loropetalum chinense and Rhododendron simsii.The tropical elements are dominant in the flora in species,genera and families,including 59.72% tropical family,50.00% tropical genera and 52.31% tropical species in all seed plants.Besides,the community succession is closely relative to Pantropic and Tropical Asia element,in some cases has relationship with Tropical Oceania,Tropical Africa,North Temperate and East Asia.However,it is not relative to Mediterranean Area,West Asia and Central Asia.The characteristics of the community are not evident,without Chinese endemic species,genus and family,and only with one species,Chrimonanthus nitens,of Calycanthaceae,and two species and two genera of Taxodiaceae.