摘要
在野外调查和分类处理的基础上 ,报道了浙江凤阳山种子植物区系的统计分析结果。现知凤阳山有种子植物 164科、 65 9属、 14 88种 (含种下分类群 )。科、属、种的分布区类型分析表明 :科的分布区类型以泛热带分布最多 ( 40 9% ) ,其次是世界分布 ( 2 0 7% )和北温带分布 ( 19 5 % ) ,温带分布少于热带分布 ( 47:81) ;属的分布区类型以泛热带分布最多( 2 0 5 % ) ,其次是北温带分布 ( 18 0 % )和东亚分布 ( 17 1% ) ,温带分布略多于热带分布( 30 8:2 77) ;种的分布区类型以中国特有分布最多 ( 46 9% ) ,其次是东亚分布 ( 2 6 0 % )和热带亚洲分布 ( 13 7% ) ,温带分布远多于热带分布 ( 5 0 1:2 64 ) ,显示出明显的亚热带山地植物区系的性质。以区系分区区划作为分析地理分布特征的单位 ,将凤阳山的中国特有分布型划分为 9个亚型 ,以华东 -华中 -华南分布亚型占有最大的比例 。
Based on investigation and statistical analyses,the flora of seed plants of Fengyangshan Nature Reserve(Mt.Fengyangshan)in Zhejiang Province is studied in the present paper.There are 1448 species and varieties,659 genera and 164 families of seed plants in the nature reserve. The areal types of families,genera and species are analyzed respectively.The pantropic type of families reaches 40 9%,cosmopolitan type 20 7%,and north temperate one 19 5% according to the statistics of plant families,which indicates that temperate elements are less than tropical ones(47:81).The pantropic type is 20 5%,the north temperate type is 18 0% and the East Asia one 17 1% at generic level, and the temperate elements are slightly more than the tropical ones(308:277).At species level,the endemic to China type reaches 46 9%,the East Asia type 26 0%,and the tropical Asia one 13 7%,and the temperate elements are much more than the tropical ones(501:264).The areal types at species indicates that floristic characteristics of the reserve is obviously subtropical montane.According to the regionlization of Chinese flora,the authors propose that the endemic to China type can be divided into 9 subtypes, of which the subtype of East-,Central- and South- China takes the biggest proportion.It reflects the relationships among the floristic elements mentioned above.
出处
《云南植物研究》
CSCD
2000年第1期27-37,共11页
Acta Botanica Yunnanica
基金
浙江省自然科学基金!资助项目 ( 3 94 2 3 1)
关键词
分布区类型
凤阳山
种子植物区系
统计分析
Floristic statistics and analyses
Areal-type
Seed plants
Mt. Fengyangshan
Zhejiang
