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林业科学 ›› 2005, Vol. 41 ›› Issue (1): 5-9.doi: 10.11707/j.1001-7488.20050102

• 论文及研究报告 • 上一篇    下一篇

沙地植被恢复过程中克隆植物分布及其对群落物种多样性的影响

张继义1 赵哈林2 崔建垣2 李玉霖2 苏永中2   

  1. 1.兰州理工大学石油化工学院,兰州730050;2.中国科学院寒区旱区环境与工程研究所,兰州730000
  • 收稿日期:2003-02-09 修回日期:1900-01-01 出版日期:2005-01-25 发布日期:2005-01-25

Effects of Clonal Plants on Community Structure and Function along a Restorational Gradient in Horqin Sandy Land

Zhang Jiyi1,Zhao Halin2,Cui Jianyuan2,Li Yulin2,Su Yongzhong2   

  1. 1.College of Petrolchemical Engineering, Lanzhou University of Technology Lanzhou730050; 2.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences Lanzhou730000
  • Received:2003-02-09 Revised:1900-01-01 Online:2005-01-25 Published:2005-01-25

摘要:

以科尔沁沙地草地植被不同恢复程度的6个群落类型为对象,研究植被恢复过程中克隆植物的分布及其对群落结构和功能的影响。研究表明:在植被恢复过程中,克隆植物(主要是密集型克隆植物)对群落环境的改变和群落生态功能的维持起主导作用,但克隆植物在群落中过高的优势度有可能导致群落物种丰富度和物种多样性的下降。恢复梯度上密集型克隆植物的重要值始终高于游击型克隆植物,说明密集型克隆植物对环境的适应能力和对群落环境的改造能力更强。

关键词: 克隆植物, 植被, 恢复, 科尔沁沙地

Abstract:

In this paper, the distribution of clonal plants in the restorational processes of grassland vegetation in Horqin sandy land,as well as its effects on community structure and function, was studied. In the restorational processes of vegetation, clonal plants(mainly phalanx clonal plants)are the driver of changes in community environment and make great contribution to the maintenance of community function. The high dominance of clonal plants probably results in decrease of species richness and species diversity in the community. Importance value of phalanx clonal plants is always higher than that of guerilla clonal plants in the restorational processes, suggesting that phalanx clonal plants are more adaptive to environment and more important to restoration of vegetation.

Key words: clonal plants, vegetation, restoration, Horqin sandy land