植物生态学报 ›› 2022, Vol. 46 ›› Issue (6): 700-711.DOI: 10.17521/cjpe.2022.0110

• 研究论文 • 上一篇    下一篇

小兴安岭不同功能型阔叶植物的柄叶权衡

翟江维1, 林馨慧1, 武瑞哲1, 徐义昕1, 靳豪豪1, 金光泽2, 刘志理2,*()   

  1. 1东北林业大学林学院, 哈尔滨 150040
    2东北林业大学生态研究中心, 森林生态系统可持续经营教育部重点实验室, 东北亚生物多样性研究中心, 哈尔滨 150040
  • 收稿日期:2022-04-01 接受日期:2022-05-19 出版日期:2022-06-20 发布日期:2022-06-09
  • 通讯作者: 刘志理
  • 作者简介:*(liuzl2093@126.com)
  • 基金资助:
    国家自然科学基金(31971636);中央高校基本科研业务费专项资金(2572022DS11);国家级大学生创新训练项目(202110225179)

Trade-offs between petiole and lamina of different functional plants in Xiao Hinggan Mountains, China

ZHAI Jiang-Wei1, LIN Xin-Hui1, WU Rui-Zhe1, XU Yi-Xin1, JIN Hao-Hao1, JIN Guang-Ze2, LIU Zhi-Li2,*()   

  1. 1School of Forestry, Northeast Forestry University, Harbin 150040, China
    2Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Asia Biodiversity Research Center, Northeast Forestry University, Harbin 150040, China
  • Received:2022-04-01 Accepted:2022-05-19 Online:2022-06-20 Published:2022-06-09
  • Contact: LIU Zhi-Li
  • Supported by:
    National Natural Science Foundation of China(31971636);Fundamental Research Funds for the Central Universities(2572022DS11);National Undergraduate Training Programs for Innovations(202110225179)

摘要:

在叶水平上, 叶柄(支撑结构)与叶片(同化结构)的权衡关系受多种因素的影响, 研究不同功能型植物柄叶性状之间的权衡关系有助于更好地理解植物的生长特性与生活史策略。该研究选定小兴安岭地区典型阔叶红松(Pinus koraiensis)林林内乔木、灌木、草本植物, 采用最小显著差异法比较植物叶片性状与叶柄性状在不同生活型间的变异, 并用标准化主轴法从生活型、叶型、耐阴性3个方面研究叶片与叶柄性状之间的权衡关系。结果表明: (1)不同生活型、叶型植物以及不同耐阴性乔木叶片性状与叶柄干质量之间具有显著的异速生长关系, 且斜率均小于1; (2)随着叶柄干质量增加, 乔木叶片鲜质量、叶片干质量增长速度比灌木、草本更快, 但相同叶柄干质量, 乔木叶柄所能支撑的叶片面积最小; (3)单叶植物叶片面积-叶柄干质量的回归斜率显著大于复叶植物, 叶片鲜质量-叶柄干质量的回归斜率小于复叶植物, 并且相同叶柄干质量下, 单叶植物的叶片干质量总是大于复叶植物; (4)比起喜光树种, 相同叶柄干质量, 耐阴树种的叶柄能够支撑的叶片面积与叶片鲜质量更大, 并且叶柄生物量分配比例(叶柄干质量/叶干质量)与叶片性状的回归斜率均表现为喜光树种>0, 耐阴树种<0。该研究结果表明叶片大小(叶片面积、叶片鲜质量、叶片干质量)与叶柄性状之间存在典型的权衡关系, 其在不同生活型、叶型植物及不同耐阴性乔木内的差异有助于揭示不同功能型植物的生长特性与生活史策略。

关键词: 功能型, 叶片, 叶型, 生活型, 叶柄, 耐阴性, 权衡

Abstract:

Aims At leaf level, trade-offs between petiole (supporting structure) and lamina (assimilation structure) are influenced by several factors. Here, we aim to provide insight into the growth features and life history strategies of plants by exploring the trade-offs between petiole and lamina traits for different functional plants in Northeast China.

Methods We measured leaf traits in three life-form plants (tree, shrub, herb) of a broadleaved Korean pine (Pinus koraiensis) forest in Xiao Hinggan Mountains, China. The least significant difference method was used to compare the variation of leaf traits among the three life forms. Trade-offs between lamina and petiole traits were estimated by using standardized major axis method for the three groups, in terms of their life form, leaf type, and shade tolerance.

Important findings Significant allometric scaling relationships were found between lamina traits and petiole dry mass in all life forms, leaf types and different shade tolerant tree species, with slopes significantly departing from 1.0. As petiole dry mass increased, the lamina fresh mass and lamina dry mass of trees increased more significant than shrubs and herbs, but tree petioles can support the smallest leaf area for a given petiole dry mass. The regression slope of lamina area-petiole dry mass for simple-leaved species was significantly greater than that of compound-leaved species, but the regression slope of lamina fresh mass-petiole dry mass was opposite, and simple-leaved species had greater lamina dry mass at a given petiole dry mass than compound-leaved species. Shade tolerant tree species were observed to have larger lamina area and greater lamina fresh mass at a given petiole dry mass than shade intolerant tree species. Moreover, the slope of petiole biomass allocation ratio (petiole dry mass/leaf dry mass)-lamina trait was greater than 0 for shade intolerant tree species and less than 0 for shade tolerant tree species. Our results suggested trade-offs exist between leaf properties (leaf area, leaf fresh mass, leaf dry mass) and petiole traits (petiole dry mass), which can be varied for plants with different life form, leaf type, and shade tolerance, thus to some extent, revealed the growth features and life history strategies of different functional plants.

Key words: functional type, lamina, leaf type, life form, petiole, shade tolerance, trade-off