植物生态学报 ›› 2017, Vol. 41 ›› Issue (11): 1149-1156.DOI: 10.17521/cjpe.2016.0321

• 研究论文 • 上一篇    下一篇

吉林蛟河阔叶红松林木本植物物种多样性及群落结构与生产力的关系

谭凌照1, 范春雨1, 范秀华2,*()   

  1. 1北京林业大学国家林业局森林经营工程技术研究中心, 北京 100083
    2北京林业大学理学院, 北京 100083
  • 收稿日期:2016-10-17 接受日期:2017-10-23 出版日期:2017-11-10 发布日期:2017-11-10
  • 通讯作者: 范秀华
  • 基金资助:
    国家重点研发计划(2017YFC0504104)和国家自然科学基金(31670643)

Relationships between species diversity or community structure and productivity of woody-plants in a broad-leaved Korean pine forest in Jiaohe, Jilin, China

Ling-Zhao TAN1, Chun-Yu FAN1, Xiu-Hua FAN2,*   

  1. 1Research Center of Forest Management Engineering of State Forestry Administration, Beijing Forestry University, Beijing 100083, China
    and
    2College of Science, Beijing Forestry University, Beijing 100083, China
  • Received:2016-10-17 Accepted:2017-10-23 Online:2017-11-10 Published:2017-11-10
  • Contact: Xiu-Hua FAN

摘要:

该研究以吉林蛟河阔叶红松林为分析对象, 比较了物种多样性和群落结构对生产力的影响, 试图为解释多样性-生产力关系、指导森林经营管理提供科学依据。研究利用11.76 hm2大样地中10 973株木本植物数据, 通过线性回归模型分析了7个物种多样性和群落结构指标与生产力的相关性, 进而利用结构方程模型比较了物种多样性和群落结构对生产力的影响。结果显示: (1)在线性回归模型中, 物种多样性和群落结构均对生产力有显著作用, 其中物种多样性均匀度指数与生产力显著负相关, 群落结构的香农指数与生产力显著正相关, 基尼系数与生产力显著负相关。(2)在结构方程模型中, 群落结构对生产力的影响比物种多样性更强。研究认为群落结构对生产力的作用比物种多样性更大, 在森林经营管理中, 提高群落结构复杂性对促进生产力具有重要的意义。

关键词: 群落结构, 物种多样性, 森林生产力, 大样地, 结构方程模型

Abstract:

Aims Based on the dataset of a broad-leaved Korean pine forest in Jiaohe, Jilin Province, this research compared the influences of species diversity and community structure on productivity. We aim to explain the relationship between diversity and productivity for better forest management.
Methods We used the data of 10 973 woody-plants in a 11.76 hm2 large sample plot and analyzed the correlations between 7 different indices of species diversity or community structure and productivity. Structural equation model was used to compare the effects of species diversity and community structure on productivity.
Important findings The results showed that: (1) Both species diversity and community structure had significant effects on productivity when they were considered separately in linear regression analysis, i.e. species evenness was negatively correlated with productivity, the Shannon index of community structure was positively correlated with productivity and the Gini index was negatively correlated with productivity. (2) In the structural equation model, when simultaneously considered, community structure had stronger influence on productivity than species diversity. Our research suggests that, the effects of community structure on productivity are greater than species diversity and it is important to increase community structure complexity to improve forest productivity during forest management.

Key words: community structure, species diversity, forest productivity, large sample plot, structural equation model