凉山山系地区石松类和蕨类植物多样性及区系分析  

of Lycophytes and Ferns in Liangshan Mountains AreaAnalysis on the Diversity and Floristic

作　　者：黄钟宣 施歆怡 孟祎晨 张丹旎 陈文德[1,2] HUANG Zhongxuan;SHI Xinyi;MENG Yichen;ZHANG Danni;CHEN Wende(College of Geography and Planning,Chengdu University of Technology,Chengdu 610059,China;Sichuan Key Research Base of Social Sciences(Extended)of National Park Research Center,Chengdu 610059,China;Library in Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]成都理工大学地理与规划学院,四川成都610059 [2]四川省社会科学重点研究基地(拓展)国家公园研究中心,四川成都610059 [3]成都理工大学图书馆,四川成都610059

出　　处：《高原科学研究》2024年第3期24-33,共10页Plateau Science Research

基　　金：生态环境部生物多样性调查评估项目(2019HJ2096001006).

摘　　要：为分析凉山山系地区的石松类和蕨类植物多样性现状,明确该地区物种组成和区系特征,文章在野外调查、标本采集鉴定和历史资料整理的基础上获得了凉山山系地区石松类和蕨类植物名录,分析了其多样性和珍稀濒危状况。结果发现,凉山山系地区目前已记录的石松类和蕨类植物有409种(包含种下级别),属于28科90属,优势科以鳞毛蕨科(Dryopteridaceae,89种)、凤尾蕨科(Pteridaceae,70种)和水龙骨科(Polypodiaceae,60种)为主,优势属以耳蕨属(Polystichum,39种)、鳞毛蕨属(Dryopteris,34种)和蹄盖蕨属(Athyrium,24种)为主;中国特有种141种,占该区域石松类和蕨类植物物种数的24.47%;受威胁植物有9种,无极危物种,国家Ⅱ级保护植物8种,保护价值较高;在地理成分上,科级和属级均以热带成分为主,显示了当地的热带亚热带气候环境特征;与其他地区比较,科的地理区系与江西赣江源自然保护区的区系联系最紧密,属的地理区系与湖南幕阜山脉最接近。In order to research the current status of the diversity of Lycophytes and Ferns in the mountainous re⁃gion of the Liangshan Mountains Area(LMA),and to clarify the species composition and flora characteristics of the region.A list of Lycophytes and Ferns in the LMA was obtained on the basis of field investigation,specimen collection combining with historical data,and their diversity,rare and endangered status was analyzed as well.There are currently 409 species(including sub species)of Lycophytes and Fern recorded belonging to 90 genera,28 families in the LMA.Among them Dryopteridaceae(89 species),Pteridaceae(70 species)and Polypodiaceae(60 species)were the dominant families while Polystichum(39 species),Dryopteris(34 species)and Athyrium(24 species)were the dominant genera.There 141 species were endemic to China with endemic rate of 24.47%,9 threatened species and 8 species of national second-class protected plants with high protection value,but no crit⁃ically endangered species was recorded at present.In terms of geographical composition,the family level and ge⁃nus level were dominated by tropical components which showed the tropic and subtropical characteristics of lo⁃cal climate and environment.In comparison with other regions,the geographical flora of family was closely relat⁃ed to Ganjiang Yuan Nature Reserve in Jiangxi province and genera was closely related to the floras of Mufu Mountains in Hunan province。

关 键 词：石松类 蕨类 多样性 地理区系 凉山山系 

分 类 号：Q948[生物学—植物学]