KIB OpenIR  > 昆明植物所硕博研究生毕业学位论文
Alternative TitleThe evolution and differentiation of distribution of Quercus section Heterobalanus (Fagaceae)
Thesis Advisor周浙昆
Degree Grantor中国科学院昆明植物研究所
Place of Conferral昆明植物研究所
Degree Discipline植物学
Keyword壳斗科 栎属 生物地理 气候特征 青藏高原 谱系地理
Other AbstractQuercus section Heterobalanus Menitsky is a section of Fagaceae. It is mainly concentrated in the eastern Himalayas and the Mt. Hengduan. The evolution and differentiation of distribution of the section was comprehensively investigated by using integrated ecological biogeography, paleobotany and molecular phylogeography. The main results are summarized as following: Quercus section Heterobalanus grows in four isolated regions, and vertically from 1000m to 4500m, but mainly distribute in the range between 2500m and 3600m. The bioclimatic indices indicate that this section is distributed under a cold and cool, semi-humid condition. Combine the result principal component analysis (PCA) and previous studies, it is most safely to say low temperature and its duration in winter limits the section upward to high alpine; high temperature of subtropical lowlands and tropical limits the section downward to low and south regions. Finally, moisture factors limit the species of the section to occur in north regions. Based on the references and coexistence analysis (CoA) results, Quercus section Heterobalanus did originate in the semiarid and semi-humid zonal vegetation. This section occurred in the center of Tibetan Plateau and the west of the Mt. Hengduan with a cool and semi-arid condition in the Miocene. The climatic conditions of this section distribution were sharply different. It was cold and arid in the inner of Tibetan Plateau, and warm and humid in the Mt. Hengduan. To test the above results and conclusions, two chloroplast gene fragments (psbA-trnH and trnT-trnL) are used to analyses the phylogeography of 21 Q. aquifolioides populations. Finally, based on the above three results, a reasonable guesswork about the evolution and differentiation of distribution of Quercus section Heterobalanus (Fagaceae) was proposed.
Document Type学位论文
Recommended Citation
GB/T 7714
杨青松. 栎属高山栎组植物分布区的形成演变及成因探讨[D]. 昆明植物研究所. 中国科学院昆明植物研究所,2008.
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