基于功能性状的水杉原生母树种群生境适应策略

植物的功能性状变异和表型可塑性是其应对异质生境的主要机制, 对植物的生长和分布有重要贡献。本文以湖北星斗山国家级自然保护区的水杉(Metasequoia glyptostroboides)原生母树为研究对象, 分析了母树种群功能性状对树木形态、地形因子及人为干扰的响应机制。结果表明: 水杉原生母树叶面积、叶干重和比叶面积的变异幅度大, 可塑性较强, 而枝和叶的干物质含量稳定性最高。人为干扰和4个地形因子均对每个功能性状变异方差有5%–20%的解释度, 冠幅对枝、叶干物质含量的变异方差有高达38%和76%的解释度。

Variation in plant functional traits and phenotypic plasticity are the primary mechanisms by which plants adapt to heterogeneous habitats, and they make significant contributions to plant growth and distribution. This study takes the original maternal trees of *Metasequoia glyptostroboides* in the Hubei Xingdoushan National Nature Reserve as the research object, and analyzes the response mechanisms of the functional traits of the maternal tree population to tree morphology, topographic factors and human disturbance. The results show that the leaf area, leaf dry weight and specific leaf area (SLA) of the original *Metasequoia glyptostroboides* maternal trees have large variation ranges and relatively strong plasticity, while the dry matter content of branches and leaves has the highest stability. Both human disturbance and four topographic factors explain 5%–20% of the variance in each functional trait, while crown width explains up to 38% and 76% of the variance in the dry matter content of branches and leaves, respectively.

搜集汇总

背景与挑战

背景概述

该数据集研究了水杉原生母树种群的功能性状变异和表型可塑性，揭示了其对异质生境的适应策略。数据来源于国家重点研发计划项目，重点关注水杉叶面积、叶干重等性状的变异及其与地形因子、人为干扰的关系。