甘肃兴隆山国家级自然保护区种子植物区系研究

Flora Diversity of Seed Plants in Xinglong Mountain National Nature Reserve of Gansu Province

采用样方和样线、重点区域与一般区域相结合的方法,对甘肃兴隆山国家级自然保护区种子植物区系进行了研究。结果表明,该保护区植物种类比较丰富,有野生种子植物84科390属907种(含种下等级),其中裸子植物3科6属10种,被子植物81科384属897种;乔木27种、灌木126种、藤本17种、草本737种;菊科Compositae、禾本科Gramineae、蔷薇科Rosaceae、豆科Leguminosae、毛茛科Ranunculaceae、十字花科Cruciferae、玄参科Scrophulariaceae等所含种、属较多,分别占保护区种、属总数的44.1%、41.8%;含15~29种的大属有柳属Salix、风毛菊属Saussurea、薹草属Carex、马先蒿属Pedicularis和委陵菜属Potentilla等5个,含1种的单种属有231属;科的地理分布以北温带分布、泛热带分布为主,属的地理分布以北温带分布、旧世界温带分布为主;科的优势现象较明显,属的优势现象不明显,单种属居多,植物区系地带过渡性明显。

The flora diversity of the seed plants in Xinglong Mountain National Nature Reserve of Gansu Province was explored.The major result showed that species are comparatively rich,there are 907 species(including infraspecific taxon)of seed plants belonging to 84 families and 390 genera.Among them,there are 10 species belonging to 6 genera,3 families in gymnosperm.897 species belonging to 384 genera and 81 families in angiosperm.Species and genera from Compositae,Gramineae,Rosaceae,Leguminosae,Ranunculaceae,Cruciferae and Scrophulariaceae are most,accounting for 44.1%and 41.8%of the total,respectively.Main genera containing 15~29 species include Salix,Saussurea,Carex,Pedicularis and Potentilla,while there are 231 genera containing only one species.The geographical distribution of the family is mainly north temperate distribution and pantropical distribution.The geographical distribution of the genus is mainly north temperate distribution and Old World temperate distribution.The dominant phenomenon of family is obvious,the dominant phenomenon of genus is not obvious,the single genus is mostly,the floristic zone transition is obvious.