天童森林土壤细菌群落中物种多样性与互作复杂性的权衡

doi:10.3969/j.issn.1000-5641.2025.04.007

华东师范大学学报（自然科学版） ›› 2025, Vol. 2025 ›› Issue (4): 69-76.doi: 10.3969/j.issn.1000-5641.2025.04.007

天童森林土壤细菌群落中物种多样性与互作复杂性的权衡

张聪伶, 杨菁, 王希华, 刘宇, 沈国春*()

华东师范大学浙江天童森林生态系统国家野外科学观测研究站, 浙江宁波　315114

收稿日期:2024-02-26 接受日期:2024-04-12 出版日期:2025-07-25 发布日期:2025-07-19
通讯作者: 沈国春 E-mail:gcshen@des.ecnu.edu.cn
基金资助:
国家自然科学基金(32271596); 浙江省领雁计划(2023C03137); 百山祖国家公园项目(2023JBGS01, 2021ZDLY03, 2021ZDZX01)

Trade-off between species diversity and interaction complexity in the soil bacterial communities of Tiantong forest

Congling ZHANG, Jing YANG, Xihua WANG, Yu LIU, Guochun SHEN*()

Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, East China Normal University, Ningbo, Zhejiang　315114, China

Received:2024-02-26 Accepted:2024-04-12 Online:2025-07-25 Published:2025-07-19
Contact: Guochun SHEN E-mail:gcshen@des.ecnu.edu.cn

摘要/Abstract

摘要：

基于浙江天童20 hm²大样地内1287个土壤细菌群落样本, 首次将DOC (Dissimilarity-Overlap Curve) 分析框架运用于森林土壤细菌系统, 使用拟合线斜率的平方估计生物互作复杂性, 检验了Robert May的稳定性约束理论. 结果显示, 天童土壤细菌群落中, 高互作复杂性仅在物种丰富度相对较低时出现, 而物种丰富度较高的群落则往往呈现出较低的互作复杂性. 除了物种丰富度, 其他物种多样性指数(多度最高的物种数和Shannon有效物种数)与互作复杂性之间同样存在显著的权衡关系. 这一发现揭示了自然生态系统可能真的存在稳定性约束和互作复杂性上限, 有助于深入理解森林生态系统物种多样性及其稳定性的维持机制.

关键词: 物种多样性, 复杂性, 稳定性约束, 土壤细菌

Abstract:

Based on 1287 soil bacterial community samples from Tiantong’s 20 hm² forest plot, this study applied the dissimilarity-overlap curve (DOC) analytical framework to the forest soil bacterial system for the first time, using the square of the slope of the fitting line to estimate the interaction complexity and tested Robert May’s stability constraint theory. Results showed that high interaction complexity occurred only when species richness was relatively low, while communities with high species richness tended to show low interaction complexity in Tiantong soil bacterial communities. In addition to species richness, there was a significant trade-off between other species diversity indices (number of top abundance species, Shannon effective species) and interaction complexity. This finding suggests stability constraints and upper interaction complexity limits in natural ecosystems, fostering deeper insight into mechanisms governing soil bacterial ecosystems’ diversity and stability.

Key words: species diversity, complexity, stability constraint, soil bacteria

中图分类号:

张聪伶, 杨菁, 王希华, 刘宇, 沈国春. 天童森林土壤细菌群落中物种多样性与互作复杂性的权衡[J]. 华东师范大学学报（自然科学版）, 2025, 2025(4): 69-76.

Congling ZHANG, Jing YANG, Xihua WANG, Yu LIU, Guochun SHEN. Trade-off between species diversity and interaction complexity in the soil bacterial communities of Tiantong forest[J]. J* E* C* N* U* N* S*, 2025, 2025(4): 69-76.

图/表 5

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天童森林土壤细菌群落中物种多样性与互作复杂性的权衡

Trade-off between species diversity and interaction complexity in the soil bacterial communities of Tiantong forest

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