福州植物园原生植物区系研究

Research on Native Flora in Fuzhou Botanical Garden

采用线路调查法对福州植物园原生植物区系的组成、物种多样性、地理成分特征进行分析。结果表明:福州植物园有原生维管束植物163科505属891种(含种下等级),其中蕨类35科53属80种、种子植物128科452属811种,具有较高的物种丰富度。种子植物中木本植物有411种,其中常绿木本276种,是地带性植被常绿阔叶林的主要成分。本区系中大科为菊科(Compositae)、禾本科(Gramineae)、豆科(Leguminosae)、蔷薇科(Rosaceae)等。原生种子植物128科可划分为10个科分布类型,以泛热带分布科(46科含126属231种)为代表的热带性质科是本区系科构成的主体,温带科所含属、种数仅约为热带科成分的1/4。原生种子植物452属可划分为14个分布类型,泛热带分布125属(248种)占最大比例;其次为北温带分布58属(97种);热带成分295属(507种),温带成分101属(164种),热带成分优势明显。中国特有属3属,无特有种,区系过渡性质明显。

By using the survey method ,Fuzhou Botanical Garden native flora composition ,species diversity ,geographical composition characteristics were analyzed.Fuzhou Botanical Garden had vascular bundle for 163 families 505 genera and 891 species ( including subspecies,varieties and forms),including fern for 35 families 53 genera and 80 species and spermatophyte for 128 families 452 gen-era and 811 species.There were 411 species of woody plants ,including 276 species of evergreen woody plants ,being a major compo-nent of the zonal vegetation-evergreen broad-leaved forest.The big families of the flora were Compositae ,Gramineae,Leguminosae, and Rosaceae etc..The 128 families of seed plants might be divided into 10 distribution types.The tropical families represented by the pantropic distribution families ( 46 families, including 126 genera, 231 species ) were the main components in this flo-ra.Department of the genera and species of temperate families was about 1/4 of tropical composition.The 452 genera could be divid-ed into 14 distribution types,125 pantropical genera (248 species) accounted for the largest proportion ,and the second was 58 north temperate genera (97 species).Tropical elements (295 genera 507 species) took obvious advantages than temperate elements (101 genera 164 species).3 endemic genera of China and no endemic species meant that this flora had obvious transition character .