秦岭天然锐齿栎林群落区系研究

锐齿栎林是秦岭林区的主要森林类型之一。通过对秦岭天然锐齿栎林群落的野外调查，报道了组成该群落的植物种类１８３种，隶属于６０科，１３１属，并在此基础上对该群落区系特点作了较为详细的分析。分析表明：１．该群落区系具有明显的温带性质。２．该群落区系是奠基在秦岭古老植物区系的基础上，通过种间竞争、群落演替形成的。３．锐齿栎本身不是一个古老的类群，其出现的时间不会早于上新世。

The preliminary study on the seed plant flora of the natural sharptooth oak forest communities in Qinling Mountain

Qinling Mountain is situated in the middle of China.Sharptooth oak forest is one of main forest types in the area.From the investigation of the sharptooth oak communities in this region,it is reported in the paper that there are 60 families,131 genera and 183 species in the community flora.Based on these data the paper analyzes the nature of the commnity flora.Results of analysis as follows:1.The nature of the community flora is the obviously temperate zone;2.The community flora had formed gradually from the ancient flora of Mt.Qinling;3.Sharptooth oak that may origin pliocene is not an ancient species.