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闽北万木林植物区系研究

THE FLORA OF WANMULIN IN NORTH FUJIAN PROVINCE

  • 摘要: 闽北万木林是我国中亚热带一处以常绿阔叶林为保护主体的自然保护区。植物种类丰富,计有维管束植物160科580属1199种。种子植物区系地理成分复杂,属的分布区类型有13个,热带亚热带分布、温带分布和中国特有分布分别占本区野生种子植物属总数的60.6%、38%和1.4%.本区种子植物的93.2%与华东区系共有,82.7%与华南区系共有。据属的相似性系数和模糊聚类法分析,万木林与武夷山区系的关系最为密切,其次为庐山和九龙山等,再次为罗浮山和其他山地。万木林属泛北极植物区中国-日本森林植物亚区华东地区的一部分,但同时也显示了闽北由华东植物区系向华南植物区系过渡的特征。

     

    Abstract: Wanmulin(WML),a nature reserve, is located in the northern part of Fujian Province, at 27°03′N and 118°09′E.The annual average temperature and rainfall are 18.7℃ and 1673.3mm.The regional vegetation is the evergreen broadleaf forest. There are 1119 species of vascular plants belonging to 160 families and 580 genera in WML. The main families of the flora are lauraceae, Fagaceae, Magnoliaceae, Elaeocarpaceae,Theaceae,Symplocaceae and Myrsinaceae etc. ,most of them are tropical or subtropical distribution. According to the geographical distribution of spermatophytic genera in WML, they may be divided into 13 types of geographical elements, which are mostly Pantropic(29.0%),North Temperature(15.1%),TropicaI Asia(13.0%)and East Asia (11.3%).By analysis of the floristic relationships with the simi-larity coefficients of genera and fuzzy cluster between WML and adjacents mountains,it showed that the similar coefficients between WML and Wuyishan(Fujian), Lushan(Jiangxi),Jiulongshan(Zhejiang)etc.are higher than the those between it and Luofushan(Guangdong) etc.Altough it belongs to the flora of East China, WML has also showed the transitional characteristics between the flora of E.China and that of S.China.

     

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