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The plant species diversity in southern Tibetan Plateau

青藏高原南部植物物种多样性

基本信息

批准号：
08041137
负责人：
OHBA Hideaki
金额：
$ 17.28万
依托单位：
University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08041137/
关键词：
Tibetan Plateau Hengduan Mountains Himalaya alpine flora polyploidy species diversity alpine vegetation floristic comparison

项目摘要

This research aimed to clarify the diversity and phylogenetic relationship of the higher plants distributed in southern margin of the Tibetan Plateau. In 1998 we surveyed the Arun River Region in eastern Nepal situated in the southernmost margin of the Plateau, and also the Hengduan Mountains in China situated in the easternmost margin of the Plateau.1. In Nepal the research is focused on the following genera, Saussurea, Meconopsis, Saxifraga, Pedicularis and Rhododendron. 1) We collected the materials for cytotaxonomical studies in the field, 2) for morphological studies, 3) for population diversity, 4) for molecular phylogenetic studies, and 5) for the vertical distribution comparing with the related taxa.2. In China the research is focused on the following genera, Potentilla, Juncus, Meconopsis, Saxifraga, Pedicularis, as done in Nepal. As the results of this research we have clarified and implemented the followings ; 1) for Potentilla it is confirmed that 24 species and 10 varieties are distributed in this region, one of which is a new species, Potentilla polyphylloides, 2) two new species are found in Juncus, Juncus gunggae and J.tradiphyllus, 3) for Saxifraga an enumeration of this region is published.3. After the field research the collected materials are analyzed.4. As a conclusion a report is published.

本研究旨在阐明青藏高原南缘分布的高等植物的多样性和系统发育关系。 1998年我们对高原最南缘的尼泊尔东部阿伦河地区和高原最东缘的中国横断山脉进行了调查。 1．在尼泊尔，研究重点是以下属：雪莲属、绿绒蒿属、虎耳草属、马先蒿属和杜鹃属。 1）我们收集了实地细胞分类学研究的材料，2）形态学研究的材料，3）种群多样性的材料，4）分子系统发育研究的材料，5）与相关分类群的垂直分布比较的材料。2．在中国，研究主要集中在以下属：委陵菜属、灯芯草属、绿绒蒿属、虎耳草属、马先蒿属，就像在尼泊尔所做的那样。作为这项研究的结果，我们澄清并实施了以下内容； 1）委陵菜已确认该地区分布有24种10变种，其中委陵菜为新种1个，2）灯心草属中发现了2个新种，灯心草和J.tradiphyllus，3）虎耳草属植物已公布该地区的列举。3．经过实地调研，对收集到的资料进行分析。 4．作为结论，发布了一份报告。