比较研究了河南省内伏牛山和鸡公山两个自然保护区的植物区系,并计算了两地植物相似性系数。研究发现两地植物区系具有一定的相似性,但也存在一定的差异。伏牛山的植物区系整体上的过渡性更强,与华中区和华北区的联系比较紧密,既有热带、亚热带分布种,北温带分布种也占有一定的地位。鸡公山更趋近于北亚热带植物区系。

The Funiu Mountain and Jigong Mountain naturalreserves are two famous forest reserves in Henan province.This paper compared the floras of these two natural reserves and calculated the comparability coefficients of the plants.The conclusion is as follows: the floras have certain comparability in the two regions,but they also differ to a certain extent.On the whole the transitionality in Funiu Mountain is stronger than Jigong Mountain,the flora of Funiu Mountain has a more tightness contact with Central China and North China,there are not only tropical and subtropical species but also many species of north temperate zone.Jigong Mountain is even more closely related to the north subtropical plant flora.The characteristics of these two regions are as follows:(1) the plant species and flora in Funiu Mountain are complex,dominated by tropical,subtropical and temperate zone components,while the plants in Jigong Mountain are mostly tropical and subtropical components, with temperate zone species in dominance to a certain extent.(2)Both regions are characterized by various geographical compositions,extensive flora contacts,association with east and west and transition between north and south.(3)There are many species proper to China.Funiu Mountain has close contact with floras of Central China,Southwest China and North China.Floras in Jigong Mountain are more closely related to Central China and East China.(4)Both are the unique species distributing centers of China in Henan Province,especially 80% of Henan unique species are concentrated in Funiu Mountain natural reserve.There are much more plant species in Funiu Mountain than in Jigong Mountain.This is propably related directly to their areas,the impacts of the human activities and the characteristics of transition.Furthermore,based on the comparative studies of the contact and characteristics of the floras in the two regions,we found that there are certain transitional characteristics in them,but the case of Funiu Mountain is clearer than that of Jigong Mountain.Since the two regions have an extremely higher comparability,it is suggested that these two regions should be put into one vegetation zone.However as there must be some differences between the northern slope and the southern slope of the Funiu Mountain,so whether there are close relations of vegetation between the two slopes of Funiu Mountain and Jigong Mountain need to be further studied.