中文摘要：

利用前期研究成果和最新植物区系研究资料,对嵩山与鸡公山、天目山的种子植物区系进行了比较研究,计算了相似性系数.结果发现嵩山与鸡公山、天目山的种子植物区系存在一定的差异：嵩山以温带成分为主,与华北植物区系联系密切;鸡公山和天目山的温带分布类型虽占有一定的地位,但热带成分丰富,过渡特点明显,加强了与华中、华东植物区系的联系;嵩山与鸡公山、天目山植物区系的相似性表现在：温带成分都占有一定的优势,支持了落叶阔叶林仍然是河南暖温带地区相对稳定的森林植被类型的观点.

英文摘要：

The Song Mountain, Jigong Mountain and Tianmu Mountain, situated in the middle and south parts of Henan province in China. On basis of comparison research carried out for the flora of Song, Jigong and Tianmu Mountain, we make use of a mathematic model to calculate comparability coefficient. Study result shows that there exists some difference between the flora of Song Mountain and that of Jigong Mountain and Tianmu Mountain. Song Mountain gives first place to temperate zone component closely related to that in Northwest and North China. Though the temperate zone component of Jigong and Tianmu Mountain holds a certain proportion, tropical species is rich and transition characteristic is obvious, which is closer to Central and East China. The similarity in three area flora shows that the temperate species have certain advantage, indicating that deciduous broad-leaved forest in temperate zone component is still a relatively stable forest cover of three areas.