温带森林的干扰历史、邻里拥挤和土壤条件共同影响着树木的生长。

IF 2.3 2区 环境科学与生态学 Q2 ECOLOGY
Oecologia Pub Date : 2024-06-01 Epub Date: 2024-06-02 DOI:10.1007/s00442-024-05570-7
Shuai Fang, Jing Ren, Marc William Cadotte, Zuoqiang Yuan, Zhanqing Hao, Xugao Wang, Fei Lin, Claire Fortunel
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引用次数: 0

摘要

要更好地预测群落和生态系统在全球变化中的未来,就必须了解不同机制在塑造群落和生态系统过程中的作用和相互影响。干扰遗产、非生物条件和生物相互作用可同时影响树木的生长,但目前仍不清楚它们的相对贡献是什么,也不清楚它们是相加效应还是交互效应。我们在中国东北的 10 个温带森林中研究了干扰强度、土壤条件和邻近拥挤对树木生长的单独和共同影响。我们发现,干扰是树木生长的最大驱动力,其次是邻居和土壤。具体来说,随着初始干扰强度的降低,树木的生长速度减慢,但随着邻近拥挤度、土壤酸碱度和土壤总磷的增加,树木的生长速度减慢。有趣的是,随着土壤pH值和土壤磷含量的增加,树木生长速度的下降幅度随着初始干扰强度的增加而增大。在测试树种特性的作用时,我们发现快速生长树种的最大树体尺寸更大,但木质密度和比叶面积较低。随着初始干扰强度的增加,木质密度较低的树种生长得更快,而比叶面积较高的树种在初始干扰强度较高的地区受邻居影响较小。我们的研究表明,要更好地预测森林动态,考虑多种驱动因素的个体效应和交互效应至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Disturbance history, neighborhood crowding and soil conditions jointly shape tree growth in temperate forests.

Disturbance history, neighborhood crowding and soil conditions jointly shape tree growth in temperate forests.

Understanding how different mechanisms act and interact in shaping communities and ecosystems is essential to better predict their future with global change. Disturbance legacy, abiotic conditions, and biotic interactions can simultaneously influence tree growth, but it remains unclear what are their relative contributions and whether they have additive or interactive effects. We examined the separate and joint effects of disturbance intensity, soil conditions, and neighborhood crowding on tree growth in 10 temperate forests in northeast China. We found that disturbance was the strongest driver of tree growth, followed by neighbors and soil. Specifically, trees grew slower with decreasing initial disturbance intensity, but with increasing neighborhood crowding, soil pH and soil total phosphorus. Interestingly, the decrease in tree growth with increasing soil pH and soil phosphorus was steeper with high initial disturbance intensity. Testing the role of species traits, we showed that fast-growing species exhibited greater maximum tree size, but lower wood density and specific leaf area. Species with lower wood density grew faster with increasing initial disturbance intensity, while species with higher specific leaf area suffered less from neighbors in areas with high initial disturbance intensity. Our study suggests that accounting for both individual and interactive effects of multiple drivers is crucial to better predict forest dynamics.

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来源期刊
Oecologia
Oecologia 环境科学-生态学
CiteScore
5.10
自引率
0.00%
发文量
192
审稿时长
5.3 months
期刊介绍: Oecologia publishes innovative ecological research of international interest. We seek reviews, advances in methodology, and original contributions, emphasizing the following areas: Population ecology, Plant-microbe-animal interactions, Ecosystem ecology, Community ecology, Global change ecology, Conservation ecology, Behavioral ecology and Physiological Ecology. In general, studies that are purely descriptive, mathematical, documentary, and/or natural history will not be considered.
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