湖南宁远九嶷山自然保护区石松类和蕨类植物多样性

来源 :第十一届全国生物多样性科学与保护研讨会 | 被引量 : 0次 | 上传用户:yue_pan
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对湖南九嶷山自然保护区石松类和蕨类植物区系的研究表明:九嶷山保护区共有蕨类植物168种(含变种和变型),隶属于23科71属.该区域科、属、种分别占中国石松类和蕨类植物的60.53%、40.11%、7.46%;占湖南石松类和蕨类植物的63.89%、66.36%、25.93%.九嶷山自然保护区的优势科主要为鳞毛蕨科(Dryopteridaceae)、水龙骨科(Polypodiaceae)、凤尾蕨科(Pteridaceae)和金星蕨科(Thelypteridaceae);优势属主要为鳞毛蕨属(Dryopteris)、风尾蕨属(Pteris)和双盖蕨属(Diplazium).3.综合科、属、种的地理成分分析表明该区是亚热带性质.这次在湖南宁远九嶷山的调查发现了众多珍稀濒危蕨类植物及湖南新纪录蕨类植物,结果表明湖南宁远九嶷山的石松类和蕨类植物区系研究尚有众多空白点,其中许多种类是湖南与广东、广西、贵州交界地区新发现的,需要大力加强保护并开展进一步的调查研究,以期有更多的发现。
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