土壤pH值通过日本森林中的组成和代谢转移调节了土壤中微生物的分配
Yaping Liu1,2, Yuta Ise3,4, Hideto Takami5,6
1Institute of Ecology, College of Urban and Environmental Sciences Peking University Beijing China.
iMetaOmics
|February 12, 2026
概括
土壤微生物控制森林循环. 微生物群落结构和代谢功能决定了氨的释放和吸收,影响生态系统的保留,特别是在不同的土壤pH水平.
科学领域:
- 森林生态 森林生态
- 土壤科学 土壤科学
- 微生物生态学 微生物生态学
背景情况:
- 土壤微生物的氨循环 (释放和吸收) 对森林 (N) 动态至关重要,影响植物生长和生态系统N保持.
- 由于代谢途径和涉及的微生物种群的复杂性,了解微生物社区结构如何影响这些N流仍然具有挑战性.
研究的目的:
- 研究微生物群落属性 (丰富度,组成,丰富度,代谢功能) 与日本森林中氨循环过程之间的关系.
- 确定土壤pH和含量等环境因素如何调节这些微生物生态系统相互作用.
主要方法:
- 利用了rRNA基因测序和量化,猎枪元基因组学和15N痕迹测试.
- 分析了各种森林土壤中的微生物社区结构和功能潜力.
- 转化的量化速率和分配.
主要成果:
- 微生物的丰富度与绝对N循环率相关,而社区的组成和丰富性与N分配有关 (氨释放,吸收,化平衡).
- 较高的土壤pH值有利于微生物群落促进氨释放和化;较低的pH值有利于具有更大的氨吸收和保留的社区.
- 微生物的代谢能力,特别是营养获取和应激适应功能,限制了N分配模式,高pH的土壤显示了增加的N流动性,低pH的土壤显示了增强的N保留.
结论:
- 微生物群落结构和代谢能力有机调节森林中与相关的N循环过程.
- 环境条件,特别是土壤pH值,显著影响哪些微生物特征主导N循环和保留.
- 研究结果阐明了微生物生态与森林梯度上的生态系统N动态之间的相互作用.
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