[1]何永涛,石培礼,张宪洲,等.当雄念青唐古拉山脉南坡不同海拔垫状点地梅分布特征[J].山地学报,2013,(06):641.
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当雄念青唐古拉山脉南坡不同海拔垫状点地梅分布特征()

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《山地学报》[ISSN:1008-2186/CN:51-1516]

Title:: Elevational Distribution of Cushion Plant Androsace tapete in the Southern Slope of Nyainqentanglha Mountains, Tibetan Plateau

作者:: 何永涛;石培礼;张宪洲;杜明远;闫巍;孙维;; 1. 中国科学院地理科学与资源研究所，生态系统网络观测与模拟重点实验室拉萨站，北京 100101;
2. 日本农业环境技术研究所，日本筑波 3050053

Author(s):: HE Yongtao; SHI Peili; ZHANG Xianzhou; DU Mingyuan; YAN Wei; SUN Wei; 1. Lhasa Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
2. Department of Agro-Meteorology, National Institute for Agro-Environmental Sciences, 3050053, Tsukuba, Japan

Keywords:: cushion plant; elevational gradient; coverage distribution; Tibetan Plateau

摘要:: 垫状点地梅(Androsace tapete)是广义青藏高原的特有种,是西藏垫状植被中分布面积最大、最重要的一个群系。通过调查垫状点地梅在西藏当雄念青唐古拉山脉南坡沿海拔梯度(4 500~5 200 m)的分布格局,并结合垂直样带上的小气候观测数据,初步分析了影响垫状点地梅分布的主要因素。结果表明,垫状点地梅主要分布在海拔4 750~5 200 m间,在海拔4 500 m处有零星分布。其最大盖度出现在山坡中部的海拔4 900 m处,其他海拔的垫状点地梅盖度则明显减少。垫状点地梅的大小分布在数量上以面积100 cm2的个体占优势,且在海拔>4 900...

Abstract:: Cushion plant Androsace tapete is an endemic species in generalized Qinghai-Tibetan Plateau, which is the most important cushion plant species and has largest distribution area in Tibetan Plateau. The distribution of cushion plant Androsace tapete was studied along an elevational gradient from 4 500 m to 5 200 m in the southern slope of Nyainqentanglha Mountains. According to cushion coverage, distribution of Androsace tapete increased with elevation, the highest coverage is 16.4%, showed at elevation 4 900 m, and the lowest coverage distribution is less than 1% at elevation 4 500 m，but no cushion plant appeared from elevation 4 500 m to 4 750 m. The small size cushions <100 cm2 were more abundant in number class, but larger cushions >100 cm2 became more predominant in coverage class, and more larger cushions distributed above 4 900 m than lower elevation. Combined with meteorological data along the slope, we found that both annual temperature and precipitation controlled the cushion plant population distribution, and the degeneration of Alpine meadow will facilitate to distribution of cushion plant, which is the possible reason for scatter distribution of Androsace tapete at elevation 4 500 m.

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备注/Memo:: 收稿日期(Received date)：2012-12-14；改回日期(Accepted)：2013-04-08。
基金项目(Foundation item)：国家自然科学
基金项目（30700080; 31070391）。[Supported by National Nature Science Foundation of China (No. 30700080; 31070391)]
作者简介（Biography）：何永涛（1975-），河南渑池人，博士，从事高原植物生态学研究。[He Yongtao（1975-）, Ph D, mainly engaged in plant ecology of Tibet plateau.] E-mail: heyt@igsnrr.ac.cn

更新日期/Last Update: 1900-01-01