广西植物2026，Vol.46Issue(2)：259-272,14.DOI:10.11931/guihaia.gxzw202505025
贵州石松类和蕨类植物多样性与地理分布研究
Research on the diversity and geographic distribution of lycophytes and ferns in Guizhou,China
摘要
Abstract
In order to systematically update and analyze the plant checklist of lycophytes and ferns in Guizhou,and to provide a scientific basis for the biodiversity conservation and sustainable utilization in the region,we investigated relevant literature,databases,and specimen information,and conducted comprehensive statistics and analyses of species composition,distribution patterns,and floristic characteristics of lycophytes and ferns in Guizhou based on the PPG Ⅰclassification system.The main results were as follows:(1)Guizhou harbored exceptionally rich diversity of lycophytes and ferns,comprising 37 families,121 genera,934 species,3 subspecies,and 35 varieties.These included 3 families,9 genera,and 61 species(including infraspecific taxa,hereafter)of lycophytes,and 34 families,112 genera,and 911 species of ferns.(2)The dominant families included Dryopteridaceae(238 species),Pteridaceae(121 species),Polypodiaceae(117 species),Athyriaceae(115 species),etc.;the dominant genera included Polystichum(101 species),Dryopteris(84 species),Asplenium(48 species),Pteris(44 species),etc.(3)The province contained 20 nationally protected species from 7 families and 9 genera,as well as 47 threatened species from 13 families and 22 genera.(4)In terms of horizontal distribution,species richness was the highest in Qiannan Buyi and Miao Prefecture(586 species)and the lowest in Liupanshui City(224 species),with a vertical distribution pattern showing a"mid-domain effect"with a maximum species diversity at 900-1 300 m elevation.(5)In terms of ecological types,terricolous species were the most abundant(533 species),followed by saxicolous(264 species),epiphytic(99 species),terricolous-saxicolous(69 species),with aquatic species being the rarest(7 species).(6)Floristic analysis at the genus level indicated that the lycophytes and ferns of Guizhou were dominated by tropical elements,consistent with the tropical dominance characteristics of Chinese fern flora.In conclusion,the results of this research not only enhance the fundamental data on lycophytes and ferns in Guizhou,but also provide critical support for advancing regional botanical surveys,ecological conservation planning,and biodiversity research.关键词
贵州省/物种多样性/石松类/蕨类/物种编目Key words
Guizhou Province/species diversity/lycophytes/ferns/species cataloging分类
农业科技引用本文复制引用
谢梅,苟光前,安明态,孙庆文,胡国雄..贵州石松类和蕨类植物多样性与地理分布研究[J].广西植物,2026,46(2):259-272,14.基金项目
中央引导地方科技发展资金项目(黔科合中引地[2023]029) （黔科合中引地[2023]029）
赤水桫椤国家级自然保护区管理局项目(202462). （202462）
