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城市化通过重塑多样性和网络复杂性来降低土壤微生物群落的稳定性

Fei Zheng¹, Jingwei Gao², Mingyang Tang²

¹College of Life Sciences, Hebei University, Baoding, 071002, China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.

|August 25, 2024

概括

城市化大大降低了土壤微生物的多样性和稳定性,影响了生态系统的健康. 保护生态区域有助于保持土壤微生物群落和生态系统的弹性.

科学领域:

生态生态学生态生态学
微生物学微生物学
环境科学环境科学

背景情况:

城市化对陆地生态系统产生了深远的影响,改变了土壤环境和生物多样性.
土壤微生物群落对于生态系统稳定至关重要,但易受城市压力影响.
了解城市化对微生物多样性,稳定性和网络结构的影响至关重要.

研究的目的:

研究不同城市化水平对土壤微生物 (细菌,真菌,原生体) 多样性和稳定性的影响.
分析土壤微生物网络结构,并在城市化梯度下识别基石物种.
确定城市,郊区和生态区域环境中土壤微生物稳定的关键驱动因素.

主要方法:

高通量测序用于分析细菌,真菌和原生体群落.
使用平均变化度 (AVD) 评估土壤稳定性.
网络分析以确定关键物种和结构方程建模以阐明关系.

主要成果:

城市化减少了土壤微生物的α多样性,并显著降低了土壤稳定性 (AVD).
稳定性降低与较低的真菌和原生体多样性以及微生物网络相互作用减弱相关.
细菌基石物种 (蛋白质细菌) 与AVD有积极的相关性,而原生体的多样性是稳定的主要驱动因素.

结论:

城市化通过减少多样性和网络复杂性,减少了土壤微生物社区的稳定性.
细菌的可变性和真菌和原生体的稳定性是土壤微生物稳定性的关键.
生态区域可以帮助保护土壤微生物多样性和稳定性,防止城市化影响.

关键词:

平均变化度的平均变化度生态区域生态区域是一个生态区域.微生物稳定性微生物稳定性土壤生物多样性土壤生物多样性城市化的城市化.

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