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Bulletin of Botanical Research ›› 2013, Vol. 33 ›› Issue (6): 653-658.doi: 10.7525/j.issn.1673-5102.2013.06.003

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Community Characteristics of Alpine Shrub Salix oritrepha

YANG Lu-Cun;ZHONG Ze-Bing;LIU He-Chun;SONG Wen-Zhu;XU Wen-Hua;ZHOU Guo-Ying*;NIE Xue-Min   

  1. 1.Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810001;2.University of Chinese Academy of Sciences,Beijing 100049;3.Qinghai Ecosystem Remote Sensing Monitoring Center,Xining 810000
  • Received:1900-01-01 Revised:1900-01-01 Online:2013-11-20 Published:2013-11-20
  • Contact: ZHOU Guo-Ying
  • Supported by:

Abstract: Salix oritrepha, belonging to the Salix, Salicaceae, is a perennial shrub endemic to China. According to the data of field plot, this paper deals with preliminary characteristics of S.oritrepha shrub communities in source regions of three rivers. The results show that: there are about 97 spermatophyte species, among which there are 30 families and 60 genera in S.oritrepha shrubs. There are 10 species of shrubs and 87 species of herbs. The dominant species is S.oritrepha, and the companions are Potentilla fruticosa, Caragana jubata and Potentillaglabra ect. The temperate floristic elements occupy a dominant position. The main life form of plants is hemicryptophytes (52.59%). The vertical structure is obvious and can be commonly divided into two layers: the shrub stratum and the herb stratum. The species diversity index of the shrub layer was a bit low, and the general trend was herb layer>shrub layer.

Key words: Salix oritrepha, community characteristics, Sanjiangyuan, Yushu, Guoluo

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