阔叶红松林下典型蕨类经济策略的季节变化

doi:10.13287/j.1001-9332.202412.008

摘要/Abstract

摘要： 本研究以阔叶红松林常见的3种典型蕨类, 即粗茎鳞毛蕨、东北蹄盖蕨和荚果蕨为研究对象, 分别在春、夏、秋季测量3种蕨类的全株性状(叶、根共12种性状), 分析不同季节性状变异及经济策略的变化特征。结果表明: 种间差异是蕨类全株性状变异的主要影响因素, 解释率可达37.2%。其中,季节对叶性状(比叶面积、叶干物质含量、净光合速率、瞬时水分利用效率、叶氮含量、叶磷含量)变异的解释率为42.7%, 种间变异解释率为30.9%, 个体差异解释率为21.4%。个体差异对根性状(根直径、比根长、根干物质含量、根组织密度、根氮含量、根磷含量)变异的解释率为47.8%, 种间变异解释率为43.5%, 季节解释率仅为5.3%。3种蕨类相比,粗茎鳞毛蕨表现出更保守的资源利用策略, 荚果蕨的获取策略则更积极。除比根长独立于根经济谱外, 3种蕨类的叶性状、根性状和全株性状均满足一维经济谱。从春季到秋季, 植物整体由获取策略向保守策略转变。

关键词: 蕨类, 叶, 根, 性状, 季节, 经济策略

Abstract: We measured the whole-plant traits (12 traits from leaves and roots) of three common fern species in the mixed broadleaved Korean pine forest, Dryopteris crassirhizoma, Athyrium brevifrons, and Matteuccia struthiopteris, during spring, summer, and autumn, and analyzed the variations of traits and economic strategies across different seasons. The results showed that interspecific differences were the primary factor influencing the variation in the whole plant traits of ferns, with an explanation rate of 37.2%. For leaf traits (including specific leaf area, leaf dry mass content, net photosynthetic rate, instantaneous water use efficiency, leaf nitrogen content, and leaf phosphorus content), seasonal variation contributed 42.7% of the total variation, while interspecific variation contributed 30.9%, and individual difference contributed 21.4%. For root traits (including root diameter, specific root length, root dry matter content, root tissue density, root nitrogen content, and root phosphorus content), individual variation accounted for 47.8% of the variance, interspecific variation contributed 43.5%, and seasonal variation accounted for only 5.3%. D. crassirhizoma exhibited a more conservative resource-use strategy compared to the other two fern species, while M. struthiopteris displayed a more acquisitive strategy. Leaf, root, and whole-plant traits of all the three species conformed to the one-dimensional economic spectrum, except for specific root length, which was independent of the root economic spectrum. From spring to autumn, the whole plant of fern shifted from an acquisitive strategy to a conservative strategy.

Key words: fern, leaf, root, trait, season, economic strategy

赵孟娟, 金光泽, 刘志理. 阔叶红松林下典型蕨类经济策略的季节变化[J]. 应用生态学报, 2024, 35(12): 3315-3322.

ZHAO Mengjuan, JIN Guangze, LIU Zhili. Seasonal variation in the economic strategy of typical ferns in mixed broadleaved Korean pine forest[J]. Chinese Journal of Applied Ecology, 2024, 35(12): 3315-3322.

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