摘要
在文献查阅、野外调查和标本鉴定的基础上,对浙江乐清雁荡山种子植物区系特征进行了统计分析,得到:(1)区域内共有野生种子植物732种(含种下类群),隶属147科、433属;科、属水平显示出多样性,含1个种的科和属分别占总科数和总属数的41.5%和67.9%.(2)科的分布区类型中,热带成分有64科,占总科数的42.9%,温带成分共36科,占24.6%;属的分布区类型中,热带成分和温带地理成分分别占总属数的49.1%和50.9%,泛热带分布及其变型所占比例最大,为24.1%.(3)从种的分布看,非中国特有种的分布区类型以东亚分布及其变型占优,中国特有种中华东-华中+华南-西南(至西北)分布类型最多.(4)外来入侵或归化植物共29种,其主要原产地为北美洲和南美洲.(5)本区种子植物区系具有种类较丰富、地理成分多样、孑遗植物多、珍稀植物较多、特有程度不高、外来植物入侵风险较大的特点,亚热带山地植物区系特征,与日本植物区系联系最为密切.
Based on the literature survey,field explorations and specimen identification,the flora of seed plants in Yandang Mountain of Yueqing county,South Zhejiang,is analyzed in this paper.The main results are as follows:(1)There are 732 species,which belong to 433 genera in 147 families.The families and genera containing only one species occupy 41.5% and 67.9%,respectively.(2)At family level,the tropic elements are more than temperate ones(64 families/42.9% vs.36 families/24.6%).At genus level,the tropic elements and temperate ones occupy49.1% and 50.9%,respectively,and the pan-tropic type is dominant and occupies 24.1%.(3)At species level,the distribution type of East China is far bigger than others and reaches 45.6%.Among the sub-type of the endemic species to China,the type of East China-Central China+ South China-Southwest China(to Northwest China)holds the biggest proportion.(4)29 species are alien species or naturalized species,which mainly invade from North and South America.(5)The seed plants in Yandang Mountain are considerably rich,and geographical components are multiform.There are many relict,rare or endangered plants,and reveals mountainous flora in subtropics.The floristics shows the closest relationship with Japan as well as some alien and invasive species.
出处
《浙江大学学报（理学版）》
CAS
CSCD
北大核心
2018年第1期118-126,共9页
Journal of Zhejiang University（Science Edition）
基金
浙江省野生植物资源调查
建档
编纂及<浙江植物志>(第2版)编著项目(335010-2015-0005)
温州市科技计划重大项目(N201000024)
关键词
雁荡山
种子植物
分布区类型
浙江
Yandang Mountain
seed plants
distribution type
Zhejiang
