山西关帝山种子植物区系研究

ON THE FLORA OF SEED PLANTS IN GUANDI MOUNTAINS,SHANXI

关帝山位于吕梁山脉中部，有种子植物７３７种，属于３３５属、８５科。种子植物属种区系成分复杂多样，以温带成分占绝对优势（温带属２４９属，占总属数的８５．６７％）。对属种区系成分和植被建群种和优势种组成的分析表明，关帝山具有典型的暖温带落叶阔叶林性质。与有关山地植物区系与植被组成的比较，关帝山与太岳山具有较高的同质性和密切的联系，与太行山南部次之，而与秦岭太白山具有明显的差异。

Guandi Mountains, located in the middle of Luliang Ranges, is situated between 37°20′～38°20′N latitude and 110°18′～111°18′E longitude in western Shanxi. There is a typical warm-temperate continental monsoon climate in the mountains, which is cool and arid in winter, however, warm and rainy in summer. It is now known that there are 737 species of seed plants, belonging to 335 genera and 85 families in Guandi Mountains, among which temperate distribution compositons make significant dominant. It has 249 genera and make 85.67% in total genera (excluding cosmopolitan). Based on the analysis of the flora of species and genera and constructive species and dominant of the vegetation in Guandi Mountains, it is indicated that the flora has some typical characteristics of warm-temperate deciduous broadleave forest. Compared with the flora and the vegetation of Taiyue Mountains, the southern segment of Taihang Mountains in Shanxi and Taibai Mountains, Qinling Ranges in Shanxi, there is higher homogeneitive and closely relationship between Guandi Mountains and the southern segment of Taihang Mountains; however, there is some significant differences between Guandi Mountains and Taibai Mountains, Qinling Ranges.