生物多样性 ›› 2013, Vol. 21 ›› Issue (6): 651-657.DOI: 10.3724/SP.J.1003.2013.07095

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青藏高原高寒草地植物多样性测定的最小样地面积

董世魁1,*(), 汤琳1, 王学霞1, 刘颖慧2, 刘世梁1, 刘全儒3, 吴娱1, 李媛媛1, 苏旭坤1, 赵晨1   

  1. 1 北京师范大学环境学院, 北京 100875
    2 北京师范大学资源学院, 北京 100875
    3 北京师范大学生命科学学院, 北京 100875
  • 收稿日期:2013-04-11 接受日期:2013-09-05 出版日期:2013-11-20 发布日期:2013-12-02
  • 通讯作者: 董世魁
  • 基金资助:
    国家“十二五”科技支撑项目(2012BAC01B02);环保部环保公益项目(201209033)

Minimum plot size for estimating plant biodiversity of the alpine grasslands on the Qinghai-Tibetan Plateau

Shikui Dong1,*(), Lin Tang1, Xuexia Wang1, Yinghui Liu2, Shiliang Liu1, Quanru Liu2, Yu Wu1, Yuanyuan Li1, Xukun Su1, Chen Zhao1   

  1. 1 School of Environment, Beijing Normal University, Beijing 100875
    2 College of Resources Science and Technology, Beijing Normal University, Beijing 100875
    3 College of Life Sciences, Beijing Normal University, Beijing 100875
  • Received:2013-04-11 Accepted:2013-09-05 Online:2013-11-20 Published:2013-12-02
  • Contact: Dong Shikui

摘要:

为科学设定青藏高原地区草地植物多样性研究的样地面积, 提高研究结果的精确性, 本研究拟合研究了7种模型, 分别筛选出高寒草甸、高寒草原和高寒荒漠3种草地类型的最优拟合模型, 并基于种-面积曲线计算各类草地植物多样性估测的适宜样地面积。结果表明: (1)非饱和曲线模型较适宜拟合青藏高原地区的种-面积关系; (2)3类高寒草地健康样地的最小面积均大于退化样地; (3)对于高寒草甸, 健康样地和退化样地的最小面积分别为108 m2和82 m2; 对于高寒草原, 健康样地和退化样地的最小面积分别为130 m2和81 m2 ; 对于高寒荒漠, 健康样地和退化样地的最小面积分别为60 m2和41 m2

关键词: 青藏高原, 高寒草地, 种-面积曲线, 最小样地面积

Abstract

To determine the appropriate plot size for estimating plant diversity of different types of alpine grassland on the Qinghai-Tibetan Plateau (QTP), i.e. alpine meadow, alpine steppe and alpine desert, seven models were applied in the examination of species-area relationships. Depending on the optimal species-area relationship curves, the minimum sizes of sampling plot for each type of grassland under healthy and degraded conditions were obtained. The findings were as follows: (1) Non-saturation curve models were most suitable for describing species-area relationships of alpine grasslands on the QTP; (2) For all three types of alpine grassland, the minimum plot size for healthy grasslands was larger than that for degraded ones; (3) Minimum plot sizes for estimating plant diversity were 108 m2 and 82 m2, respectively, for healthy and degraded alpine meadow, 130 m2 and 81 m2, respectively, for healthy and degraded alpine steppe, and 60 m2 and 41 m2, respectively, for healthy and degraded alpine desert.

Key words: Qinghai-Tibetan Plateau, alpine grasslands, species-area relationship, minimum plot size