小五台山种子植物区系研究

A study on the flora of spermatophyte in Xiaowutai Mountains

小五台山位于河北省西北部 ,共有种子植物 97科 ,467属 ,1 1 48种。种子植物属的区系成分复杂 :温带成分占优势 ,温带属 2 80属 ,占总属数的 69.31 %。通过对小五台山和部分山地植物区系的属相似性比较 ,结果显示 :小五台山与东灵山、雾灵山十分相似 ,与关帝山、太岳山有一定的相似性 ,而与长白山、泰山、伏牛山、神农架相似性偏低。

Xiaowutai Mountains, located in the northwest of Hebei Province, is situated between 39°50′～ 40°07′ Nlatitude and 114°47′～ 115° 30′ Elongitude. There are 1 148 species of seed plants, belongs to 467 genera and 97 families in Xiaowutai Mountains. The areal-types of the genera are abundant. Analysis of the floristic elements shows that the temperate distribution elements, having 280 genera and accounting for 69.31% in total genera (excluding cosmopolitan), hold a dominant position.Moreover the floristic geographic compositions of seed plants of Xiaowutai Mountains and some mountains, China were studied by using the analysis of similarity coefficient of genus respectively, and the results indicated that there is higher homogeneity and close relationship between the floristic elements of Xiaowutai Mountains and Dongling Mountains, Wuling Mountains, and some similarity with Guandi Mountains and Taiyue Mountains, However, there is less similarity between that of Xiaowutai Mountains and Changbai Mountains, Tai Mountains, Funiu Mountains, Shennongjia Mountains.