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中国沙漠 ›› 2003, Vol. 23 ›› Issue (3): 289-294.

• 研究论文 • 上一篇    下一篇

中国沙漠植物区系相似性的数值分析

任珺1,2, 陶玲3   

  1. 1. 北京师范大学 资源科学研究所, 环境演变与自然灾害教育部重点实验室, 北京 100875;
    2. 河西学院 河西生态研究所, 甘肃 张掖 734000;
    3. 甘肃亚盛集团博士后科研工作站, 甘肃 兰州 730030
  • 收稿日期:2001-12-05 修回日期:2002-02-28 出版日期:2003-06-20 发布日期:2003-06-20
  • 作者简介:任珺(1968-),男(汉族),新疆石河子人,博士,主要从事荒漠植被及植物生态学研究。E-mail:renjun30@hotmail.com
  • 基金资助:
    国家重点基础研究发展规划项目(G2000018607);中国科学院沙坡头沙漠试验研究站基金共同资助

Quantitative Analysis of Similarity of Chinese Desert Plant Floras

REN Jun1,2, TAO Ling3   

  1. 1. Institutel Change and Natural Disaster, Ministry of Education of China, Beijing 100875, China;
    2. Institute of Hexi Ecology, Hexi University, Zhangye 734000, Gansu, China;
    3. Postdoctoral Research Station of Yasheng Group Company, Lanzhou 730030, China
  • Received:2001-12-05 Revised:2002-02-28 Online:2003-06-20 Published:2003-06-20

摘要: 应用Jaccard相似系数对中国沙漠植物区系进行了聚类分析。结果表明,可以将20个沙漠植物区系划归入蒙古沙漠植物区、西北沙漠植物区和华北沙漠植物区。根据科、属和种相似性系数的系统聚类结果,柴达木盆地、河西走廊、祁连山山前及腾格里沙漠边缘和吐-哈盆地相对较为孤立。区系相似性数值分析结果基本符合各地区植物区系存在的特点,与传统的典型植被划分结论相一致。

关键词: 中国沙漠植物区系, Jaccard相似系数, 最大生成树, 聚类分析

Abstract: The similarities among 20 Chinese desert plant floras are studied by using clustering analysis with Jaccard's similarity coefficients in this paper.The results suggest that these floras can be classified into 3 groups of the Mongolica Desert Plant Zone,the Northwest Desert Plant Zone and the North China Desert Plant Zone.According to results obtained from the clustering analysis based on similarity coefficients at family,generic and specific levels,Hexi Corridor,front of Qilian Mountain and edge of Tengger Desert,Tuha Basin and Tsaitam Basin are more isolated.The results coincide with characteristics of floras and traditional demarcation of typical vegetations.

Key words: Chinese desert flora, Jaccard's similarity coefficient, maximum spanning tree, clustering analysis

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