湖南临武西山种子植物区系研究

Study on the Flora of Seed Plants in Linwu Xishan,Hunan

临武西山位于湖南西南边境,境内特殊的沟谷环境,优越的自然条件使得该处植物资源非常丰富。初步统计西山共有维管束植物212科、787属、1730种;其中种子植物174科、699属、1516种。文章在科属种三个不同水平上对西山种子植物区系特征进行了分析。结果表明:该地属亚热带植物区系,种子植物区系具有中亚热带向南亚热带过渡的特点,为华南、华东、华中、滇黔桂植物分布的交汇渗透区。西山位于南岭山地,南岭山地特有成分物种众多,保存的珍稀濒危植物富集。建议加强对森林植被的保护,禁止各种采伐、开垦和挖取药用植物等的破坏活动。

Linwu Xishan lies in south west Hunan and possesses rich plant resources due to its unique valley and hill environment and superior natural conditions.These plant species include a variety of vascular plants consisting of 212 families,787 genera,and 1730 species,of which 174 families,699 genera,and 1516 species are seed plants.A detailed and accurate analysis on the characteristics of seed plant flora in Xishan was conducted.Results showed that they belonged to subtropical flora with a transition from central subtropical to south subtropical.Xishan was also found to be a connection area of South-China,East-China,Central China,and Dianqianguim and belonged to the Nanling Mountains,so a large number of endemic,rare,and endangered plants were discovered in this area.Thus,it is recommended that this area be preserved as a national forest and logging,reclamation,and medicinal plant collection be strictly forbidden.