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植物研究 ›› 2014, Vol. 34 ›› Issue (4): 542-546.doi: 10.7525/j.issn.1673-5102.2014.04.019

• 论文 • 上一篇    下一篇

长白山北坡次生林的树种多样性与胸径多样性

李雪梅;王树力*   

  1. 东北林业大学,哈尔滨 150040
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2014-07-20 发布日期:2014-07-20
  • 通讯作者: 王树力
  • 基金资助:
     

Tree Species Diversity and DBH Diversity of the Secondary Forests on the North Slope of Changbai Mountains

LI Xue-Mei;WANG Shu-Li*   

  1. Northeast Forestry University,Harbin 150040
  • Received:1900-01-01 Revised:1900-01-01 Online:2014-07-20 Published:2014-07-20
  • Contact: WANG Shu-Li
  • Supported by:
     

摘要: 采用野外调查与室内分析相结合的方法,以长白山北坡露水河林业局次生林为对象,应用Margalef物种丰富度指数、Shannon-Wiener多样性指数、Pielou均匀度指数、Simpson优势度指数定量分析了长白山北坡次生林的树种多样性和胸径多样性,并与原始红松林进行了对比。结果表明,(1)与原始红松林相比,次生林的树种多样性指数H与均匀度指数J较大,丰富度指数S与生态优势度指数D较小。次生林的胸径生态优势度较大,丰富度S与多样性H较小,均匀度相差不大。3种次生林型中,杨桦林的胸径丰富度与多样性指数最高,杂木林次之,胡桃楸林最小,但均匀度指数与优势度指数变化正好相反;(2)不同林龄杨桦林和胡桃楸林的树种多样性和胸径多样性变化规律一致,随着林龄的增长,树种多样性指数和均匀度指数、胸径丰富度指数和多样性指数逐渐增大,树种和胸径的优势度指数逐渐减小;(3)无论是原始红松林还是次生林,采伐后树种多样性都会降低,采伐强度越大,降低程度越大。林木胸径多样性对采伐强度的响应较复杂,与采伐方式有关。

关键词: 长白山, 原始红松林, 次生林, 树种多样性, 胸径多样性

Abstract: The tree species diversity and DBH diversity of the secondary forests on the north slope of Changbai Mountains were studied and compared with that of virgin Korean pine forest by using Margalef species richness index, Shannon Wiener diversity index, Pielou evenness index and Simpson dominance index through the methods of field investigation and indoor analysis. It was shown that: (1)Tree species diversity index H and evenness index J were bigger, richness index S and ecological dominance index D were smaller in the secondary forest than those in virgin Korean pine forest. DBH ecological advantages index D, richness index S and diversity index H of the secondary forest were smaller than those of virgin Korean pine forest. DBH evenness index of the secondary forest was similar to that of virgin Korean pine forest. DBH richness index and diversity index of the poplar-birch forest were the biggest, and those of Juglans mandshurica Maxim. forest were the smallest among three secondary forests. DBH evenness index and dominance index changed oppositely to DBH richness index and diversity index among three secondary forests; (2)Tree species diversity and DBH diversity changed with the same pattern. Tree species diversity index and evenness index, DBH richness index and diversity index increased gradually, tree species and DBH dominance index decreased gradually with forest age increased. (3)Either virgin Korean Pine forest or secondary forests, tree species diversity would reduce after cutting, the stronger the cutting intensity, the greater the decrease degree. The response of the DBH diversity to the cutting intensity was complex, which was associated with the cutting methods.

Key words: Changbai Mountains, Virgin Korean pine forest, secondary forest, tree species diversity, DBH diversity

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