贵州石松类和蕨类植物多样性与地理分布研究

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中图分类号：Q948 文献标识码：A 文章编号：1000-3142（2026）02-0259-14

Abstract：Inorder tosystematicallyupdateandanalyze the plantchecklistof lycophytesandfers in Guizhou，and to provideascientific basis for thebiodiversityconservationandsustainableutilization in theregion，weinvestigated relevant literature，databases，andspecimeninformation，andconductedcomprehensivestatisticsandanalysesofspecies composition，distribution paterns，and floristic characteristics of lycophytes and femns in Guizhou based onthe PPGI classification system.The main results were as follows：（1） Guizhou harbored exceptionallrich diversityof lycophytes andferns，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，and34families，12 genera，and911 speciesof 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 7familiesand9genera，aswellas 47 threatened speciesfrom13 familiesand 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 patern showing a“middomain efect”with a maximum species diversity at 90o-130 m elevation.（5）In terms of ecological types， tericolous species were the most abundant （533 species），followed by saxicolous（264 species），epiphytic（99 species），terrcolous-saxicolous （69 species），with aquatic species being the rarest （7 species）.（6）Floristic analysis at thegenus level indicatedthatthe lycophytesand ferns of Guizhou were dominated by tropical elements，consistent withthetropical dominance characteristicsof Chinese fern flora.Inconclusion，theresultsof thisresearch notonly enhancethe fundamentaldataonlycophytes andferns in Guizhou，butalso providecritical supportforadvancing regional botanical surveys，ecological conservation planning，and biodiversity research.

Key words： Guizhou Province，species diversity，lycophytes，ferns，species cataloging

生物多样性包含生态系统多样性、物种多样性和遗传多样性3个层次，其中物种多样性有承上启下的作用，向上组成生态系统多样性，向下承载着遗传多样性（马克平，1993）。（剩余24355字）