| 摘要: |
| 根据分布于太白山的太白红杉群落野外调查资料,经统计组成该群落的种子植物种类有270种,隶属于39科144属,其中草本234种,木本植物36种;中国特有种195种,其中秦岭特有种25种,分别占该群落总种数的72.2%和9.3%。据此,对该群落的区系性质、特点和起源进行较为系统的分析表明,该群落区系具有明显的温带性质和特有性;该群落区系是奠基在秦岭古老植物区系的基础上,由于第四纪冰期和剧烈的造山运动,至更新世以来又趋活化的结果;太白红杉林发生的时间不会早于更新世。 |
| 关键词: 太白红杉 群落区系 太白山 |
| DOI： |
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| 基金项目:陕西省自然科学基金项目(2000SM09) |
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| Study on the seed-plant flora of Larix chinensis forest communities in Taibai mountain |
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| Abstract: |
| Based on data of the investigation of the Larix chinensis communities in Taibai Mt.,the highest peak of Qinling range,the conclusion can be drawn that there are 39 families,144 genera and 270 species in the communities flora,among which there are 234 herbs and 33 woody plants;195 species are endemic to China and 25 species endemic to Qinling,which are 72.2% and 9.3% of total community species respectively.In terms of these data,the paper analyzed the nature,origin and development of the community flora.Results of the analysis are as follows:the Larix community flora shows the typical nature of temperate and endemicity;the community flora has been formed gradually from the ancient flora,Qinling Tertiary flora,and tends to be activated again since Pleistocene because of the icy weather and the great formation of mountains in Quaternary period;the orgin time of Larix chinensis could not be earlier than Pleistocene. |
| Key words: Larix chinensis,community flora,Taibai mountain |
