四明山维管植物区系组成与群落类型OA

As ecological barrier in eastern Zhejiang,Siming Mountain exert important functions in maintain-ing local ecological balance,regulating climate and conserving water sources.In order to systematically ex-plore overall characteristics of plant diversity in Siming Mountain,197 sample plots and 20 line transects were set up to conduct field surveys on vascular plant species from 2022 to 2025,and species diversity,floris-tic composition and community types were analyzed.Results showed that there were 1 985 vascular plants be-longing to 4 classes,63 orders,181 families and 853 genera in Siming Mountain,dominated by angiosperms.Species of large families and small genera were more.Species of herbaceous plants(including herbaceous lia-nas)were more.Floristic components were complex with 14 distribution types.Tropical floristic components ac-counted for 42.08%,while temperate and subtropical floristic components accounted for 57.92%,with similar proportions.There were 30 associations or communities and 42 successional stage communities.There were 5 obviously dominant associations,including Camellia cuspidata-Rhododendron ovatum/Litsea coreana var.sinen-sis+Quercus myrsinifolia,Lindera erythrocarpa/Dalbergia hupeana,Diplopterygium chinense-Eurya nitida/Schi-ma superba,Ophiopogon japonicus-Loropetalum chinense/Quercus glauca and C.cuspidata/Lindera rubronervia+Q.myrsinifolia.