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辽东山区次生林优势木本植物种间联结与相关分析

邓莉萍1,白雪娇1,2,李露露1,牛沙沙1,韩美娜1,秦胜金1,周永斌1,2**   

  1. 1沈阳农业大学林学院, 沈阳 110866; 2中国科学院清原森林生态系统观测研究站, 沈阳 110016)
  • 出版日期:2015-06-10 发布日期:2015-06-10

Interspecific association and correlation among dominant woody plants of secondary forest in montane region of eastern Liaoning Province, China.

DENG Li-ping1, BAI Xue-jiao1,2, LI Lu-lu1, NIU Sha-sha1, HAN Mei-na1, QIN Sheng-jin1, ZHOU Yong-bin1,2**   

  1. (1College of Forestry, Shenyang Agricultural University, Shenyang 110866, China; 2Qingyuan Forest CERN, Chinese Academy of Sciences, Shenyang 110016, China)
  • Online:2015-06-10 Published:2015-06-10

摘要: 为了解辽东山区次生林群落结构特征,判别优势树种在群落中的地位和作用,基于2×2联列表,方差比率(VR)、χ2检验、Pearson相关系数和Spearman秩相关系数等指标,对群落重要值较高的17个优势树种进行种间联结和相关性的定量研究。结果表明,17个优势树种在不同样方尺度下总体关联性表现为正联结;χ2检验显示,在20 m×20 m样方尺度下,17个优势种组成的136个种对中,86个种对呈正联结,50个种对呈负联结;Pearson相关系数检验显示,69个种对呈正相关,67个种对呈负相关;Spearman秩相关系数检验显示,81个种对呈正相关,55个种对呈负相关。对种间联结及相关性的研究可为进一步揭示物种生物学特性、种间关系和生境条件等综合作用下的种群分布格局提供依据。

关键词: &alpha, 物种多样性, 相关性分析, 亚高山草甸, 谱系多样性

Abstract: To investigate community structure and the role of dominant species of secondary forest in montane region of eastern Liaoning, we examined interspecific association and correlation among 17 dominant species at different quadrat scales based on 2×2 contingency tables, variance ratio (VR), χ2test, Pearson correlation coefficient and Spearman rank correlation coefficient. The results showed that the overall association was positive among 17 dominant species at different quadrat scales. At 20 m×20 m quadrat scale, the examination of interspecific association or correlation among the 136 species pairs of 17 dominant species showed that 87, 65 and 81 species pairs were positive, and 49, 71 and 55 species pairs were negative, based on χ2test, Pearson correlation coefficient test and Spearman rank correlation coefficient test, respectively. Such examination provides evidence for revealing the population distribution patterns under comprehensive effect of species biological characteristics, interspecific relationship and habitat conditions.

Key words: subalpine meadow, species diversity, correlation analysis., pedigree diversity, &alpha