Journal of Resources and Ecology ›› 2019, Vol. 10 ›› Issue (4): 389-396.doi: 10.5814/j.issn.1674-764X.2019.04.006

• Resources and Ecology in the Qinghai-Tibet Plateau • Previous Articles     Next Articles

Quantitative Classification and Ordination of Plant Communities in the Upper and Middle Reaches of the Yarlung Zangbo River Basin

WANG Tong1,2(), WANG Jingsheng1,2,*(), DING Yuke3, LIU Wenjing4, BAO Xiaoting4, LI Chao1,2   

  1. 1. Qianyanzhou Ecological Research 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. University of Chinese Academy of Sciences, Beijing 100049, China
    3. Forest Inventory and Planning Institute of Tibet Autonomous Region, Lhasa 850000, China
    4. School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
  • Received:2019-01-07 Accepted:2019-04-10 Online:2019-07-30 Published:2019-07-30
  • Contact: WANG Jingsheng E-mail:1011653657@qq.com;wangjsh@igsnrr.ac.cn
  • About author:

    First author: WANG Tong, E-mail: 1011653657@qq.com

  • Supported by:
    The 13th Five-year National Key Research and Development Program of China (2016YFC0502006).

Abstract:

Based on vegetation survey data and environmental data of the Yarlung Zangbo River Basin, we conducted a quantitative ecological analysis of the vegetation community composition and the relationship between species and the environment in the study area. The results showed that 44 sampling sites and 68 plant species in the study area can be classified into seven subtypes: Artemisia minor + Stipa purpurea; Artemisia demissa + Stipa purpurea + Artemisia wellbyi; Kobresia pygmaea; Trikeraia hookeri; Sophora moorcroftiana + Cotoneaster multiflorus + Pennisetum centrasiaticum; Artemisia frigida; Potentilla fruticosa + Orinus thoroldii. Detrended correspondence analysis (DCA) indicated that both longitude and altitude play important roles in site and species distribution patterns. In addition, canonical correspondence analysis (CCA) revealed that in the upper and middle reaches of the Yarlung Zangbo River Basin, changes in temperature and precipitation caused by longitude are the main factors controlling the formation and transition of vegetation community types. Moreover, natural vegetation could be divided into three types: desert steppe community (source area), alpine steppe community (middle reaches region), and shrub community (confluence of Yarlung Zangbo River and Nyangqu River).

Key words: upper and middle reaches of the Yarlung Zangbo River, plant community, quantitative classification, ordination