南京林业大学学报(自然科学版) ›› 2025, Vol. 49 ›› Issue (3): 163-171.doi: 10.12302/j.issn.1000-2006.202403012

• 研究论文 • 上一篇    下一篇

原始阔叶红松林中不同生活型阔叶植物枝叶性状的变异及权衡

侯瑄珠1(), 李楠2,*()   

  1. 1.华威大学,英国英格兰西米德郡考文垂 CV4 7AL
    2.东北林业大学林学院,黑龙江 哈尔滨 150040
  • 收稿日期:2024-03-07 接受日期:2024-04-24 出版日期:2025-05-30 发布日期:2025-05-27
  • 通讯作者: *李楠(linan1550@163.com),工程师。
  • 作者简介:

    侯瑄珠(attitude36@163.com)。

  • 基金资助:
    中央高校基本科研业务费专项资金项目(2572014BA06)

Variation and trade-offs of twig and leaf traits among different broadleaved life form plants in the primitive broadleaved-Korean pine forest

HOU Xuanzhu1(), LI Nan2,*()   

  1. 1. University of Warwick, Coventry CV4 7AL, The United Kingdom
    2. College of Forestry, Northeast Forestry University, Harbin 150040, China
  • Received:2024-03-07 Accepted:2024-04-24 Online:2025-05-30 Published:2025-05-27

摘要:

【目的】了解植物枝叶性状间的权衡关系,为进一步揭示植物在不同环境胁迫下采取的资源分配策略提供参考。【方法】以原始阔叶红松(Pinus koraiensis)林中的优势或常见的12种阔叶植物为研究对象,采用单因素方差分析或非参数秩和检验对不同生活型植物或物种间的性状进行差异性分析,以标准化主轴估计(standardized major axis estimation,SMA)对枝叶性状间相关关系进行研究。【结果】不同生活型阔叶植物的枝叶性状有相似的变异趋势,其中枝横截面积和出叶强度变异程度均高于30%,枝干质量变异高于20%,而单叶干质量、总叶面积和单叶面积变异均低于15%;乔木的单叶面积、总叶面积和单叶干质量均显著高于灌木;乔木枝横截面积与单叶面积之间为正异速生长关系,灌木为正等速生长关系;乔木和灌木枝横截面积与总叶面积之间均为正等速生长关系,仅部分物种存在正异速生长关系;乔木和灌木出叶强度与单叶面积、单叶干质量之间为负异速生长关系,仅部分乔木物种呈负等速生长关系。【结论】不同生活型植物间枝叶性状以异速生长关系为主,异速生长更有利于植物生存策略的调节,不同生活型阔叶植物枝叶性状的权衡模式取决于生长方式。

关键词: 阔叶红松林, 权衡关系, 生活型, 性状变异, 出叶强度, 功能性状

Abstract:

【Objective】The trade-off between twig and leaf traits is crucial for understanding how plants allocate resources under various environmental stresses. This study focused on 12 dominant or common broadleaved plants in a natural broadleaved-Korean pine (Pinus koraiensis) forest. 【Method】We used one-way ANOVA or non-parametric rank-sum tests to analyze trait differences among different life forms or species. Standardized major axis estimation (SMA) was employed to investigate correlations between twig and leaf traits. 【Result】Broadleaved plants of different life forms exhibited similar trends in twig and leaf traits. Specifically, variation in twig cross-sectional area and volume-based leafing intensity were greater than 30%, twig mass variation exceeded 20%, while individual leaf mass, total leaf area, and individual leaf area variations were below 15%. Trees had significantly higher individual leaf area, total leaf area, and individual leaf mass compared to shrubs. There was a positive allometric relationship between twig cross-sectional area and individual leaf area in trees, while shrubs showed a positive isometric relationship. Both trees and shrubs exhibited positive isometric relationships between twig cross-sectional area and total leaf area, with only some species showing positive allometric relationships. Both tree and shrub species demonstrated negative allometric relationships between volume-based leafing intensity and individual leaf area or mass, with some tree species showing negative isometric relationships. 【Conclusion】The results suggest that twig and leaf traits across different plant life forms generally follow allometric relationships. Allometric growth enhances plant survival strategies, and the trade-off model of twig and leaf traits is influenced by growth patterns.

Key words: broad leaved-Korean pine forest, trade-off relationship, life form, trait variation, volume-based leafing intensity, functional traits

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