摘要
通过野外调查及资料整理,对韶关南雄市观音岽自然保护区蕨类植物种类组成、区系分布特征进行研究,并与周边相邻3个研究区的蕨类植物区系进行比较分析。结果表明:(1)观音岽自然保护区共统计到蕨类植物28科49属93种,优势科为水龙骨科、鳞毛蕨科、凤尾蕨科、金星蕨科,单种科9个,单种属26个;该区蕨类植物起源古老,进化关系连贯;优势科属明显,分化水平不高,以寡种科属居多。(2)该区蕨类生态类型多样,土生蕨类62种、附生蕨类28种、水生蕨类3种,分别占总种数的66.66%、30.11%、3.23%。(3)该区蕨类植物热带分布种类占绝对优势,热带种类分布科、属、种分别占除世界分布类型外总科、属、种的84.21%、83.72%、65.93%;在种水平上以热带亚洲分布和东亚广布为主,整体呈现热带向温带过渡的特征。(4)在地理亲缘关系上,观音岽自然保护区与南雄丹霞梧桐自然保护区联系最为密切,与冠豸山次之,与丹霞山的关系则较为疏远。
Through field investigation and data compilation,we analyzed the flora composition and distribution types of Guanyindong Nature Reserve in Nanxiong,Shaoguan,and the similarities among three neighboring study areas.The results showed that:(1)There were 93 species of pteridophytes belonging to 49 genus and 28 families in Guanyindong Nature Reserve.The dominant families were Polypodiaceae,Dryopteridaceae,Pteridaceae,and Thelypteridaceae.There were 9 monotypic families and 26 monotypic genus.The origin of the flora in this area could be traced back to ancient time and the evolutionary relationship was coherent.The dominant families and genus were obvious,while the level of differentiation was not high and most of them belonged to oligophytic families and genus.(2)The ecological types of ferns in this area were diverse,with 62 species of terraphytes,28 species of epiphytes and 3 species of hydrophytes,accounting for 66.66%,30.11%,and 3.23%of the total respectively.(3)The fern flora in this area was generally tropical.The tropical families,genus and species accounted for 84.21%,83.72%,and 65.93%of the total families,genus and species respectively;At the species level,they were mainly distributed in tropical Asia and East Asia,and the fern flora had a permeable transition from tropical zones to temperate zones.(4)Gegraphically,the fern flora of Guanyindong Nature Reserve was most closely related to the fern flora of Firminana danxiaens Nature Reserve,followed by Guanzhai Mountain,and distanced from Danxia Mountain.
作者
王梦楠
胡希军梁胜
韦宝婧
李芮芝
Wang Mengnan;Hu Xijun;Liang Sheng;Wei Baojing;Li Ruizhi(College of Landscape Architecture, Central South University of Forestry and Technology, Changsha 410004, China)
出处
《中国野生植物资源》
CSCD
2020年第12期65-70,共6页
Chinese Wild Plant Resources
基金
国家林业局野生植物保护项目(2016ZWZY06)
林业公益性行业科研专项(201404710)
湖南省高等学校“双一流”建设项目资助(湘教通[2018]469号)。
