施秉喀斯特地区兰科植物资源分布特征

Resources Distribution Features of Orchidaceae Plants in Shibing Karst Region

为探明施秉喀斯特地区兰科植物资源分布特征,促进兰科植物资源的保护与利用,通过实地调查,统计并分析兰科植物的物种组成、生活型及区系特征。结果表明,施秉喀斯特地区共有兰科植物21属42种,地理分布以热带亚热带分布为主,占85%;生活型以地生兰为主。调查所得的42种兰科植物全部被列入中国物种红色名录,37种被列入国家重点保护植物名录,1种被列入世界自然保护联盟濒危物种红色名录(IUCN物种红色名录)。

In order to verify the resource distribution characteristics of Orchidaceae plants in karst areas and promote the protection and utilization of Orchidaceae plants,from November 2012 to September 2013,six field investigations aiming at Orchidaceae plants were carried out in Shibing karst area（mainly about the species,distribution altitude and habitat and so on）.Then,the species composition,life form and floristic characteristics of Orchidaceae plants were statistically analyzed.The results showed that the resources of Orchidaceae plants in Shibing karst area are rich,a total of 21genera,42species：the tropical and subtropical distribution on the geographical distribution of Orchidaceae plants in study area is dominant,accounting for 85%;the life-forms of Orchidaceae plants are comprehensive and rich,mainly terrestrial orchids;there are eight species of endemic to China species with strong endemic features. Among them,one species was listed in IUCN Species Red List;42species were included in China Species Red List;37were included in the National Key-protected Plants List.In addition,based on the features of rich diversity,high threat level and rarity of Orchidaceae plants in study area,the protection countermeasures of Orchidaceae plants are also proposed in this paper.