广西武鸣县种子植物区系研究

Study on the Flora Characteristics of Seed Plants in Wuming County, Guangxi

摘要:

为了解广西武鸣县野生种子植物区系特征, 对其野生种子植物资源进行调查。结果表明，广西武鸣县有野生种子植物2 542种，隶属于184科898属，以被子植物占优势，裸子植物贫乏。从科属组成上看，以大科、单种属和寡种属为主体。科、属和种分布区类型丰富，含典型的热带亚热带成分，兼具温带成分，呈热带至亚热带过渡性质。与邻近地区比较，武鸣县植物多样性比较丰富，植物区系成分与广西横县最相近。因此，武鸣县种子植物多样性丰富、热带性质明显、地理成分多样、起源古老，同时聚集了一些特有植物和珍稀濒危植物，体现出北部湾植物区系的特征。

Abstract:

In order to understand the flora characteristics of wild seed plants in Wuming County, Guangxi, the resources of wild seed plants were investigated. The results showed that there was 2 542 species of wild seed plants, belonging to 898 genera and 184 families. Angiosperms were the dominant taxa, while gymnosperms were fewer. From the composition of family and genus, the large family, monotypic genus and depauperate genus were dominated. The areal types of family, genus and species were rich, containing typical tropical and subtropical elements with temperate elements, showing the transition from tropical to subtropical. The species diversity of Wuming County was rich, which floristic composition was close to that of Hengxian, Guangxi. Therefore, the flora of Wuming County was characterized by rich biodiversity, tropical in nature, geographical diversity and ancient origins. At the same time, there were some endemic and endangered plants, reflecting the floristics characteristics of Beibu Gulf.