Capabilities and Limitations of Air-Dried Soils in Microbial Biogeography: A Regional-Scale Comparative Analysis

文献类型： 外文期刊

第一作者： Zhang, Jianwei

作者： Zhang, Jianwei;Sheng, Jing;Guo, Zhiying;Liu, Jie;Pan, Xianzhang;Huang, Yanan;Cui, Xiaodan;Wang, Yuanyuan;Jin, Yang

作者机构：

关键词： air-dried soils; community assembly; co-occurrence network; environmental dependence; microbial biogeography; microbial diversity

期刊名称：ENVIRONMENTAL MICROBIOLOGY （ 影响因子：4.0； 五年影响因子：4.8 ）

ISSN： 1462-2912

年卷期： 2025 年 27 卷 6 期

页码：

收录情况： SCI

摘要： Air-dried soil archives offer valuable potential for studying long-term microbial dynamics, yet systematic evaluations across large spatial scales with paired fresh-soil comparisons remain limited. Here, we systematically evaluated the effects of 1-month air-drying on microbial biogeography across 244 paddy fields in eastern China. Results showed that air-drying significantly altered communities by reducing diversity through the elimination of rare taxa while enriching desiccation-resistant phyla like Firmicutes, Chloroflexi and Actinobacteria. These compositional shifts further triggered functional bias, enhancing fermentation/methanogenesis pathways while suppressing nitrogen cycling processes. Despite these alterations, air-dried samples maintained remarkable fidelity to key ecological patterns observed in fresh soils. Multivariate analyses demonstrated strong structural concordance between paired samples, with soil pH consistently emerging as the primary environmental driver in both data sets. This preservation of biogeographical relationships occurred despite significant changes in underlying ecological mechanisms. Air-dried soil communities exhibited increased stochastic assembly, reduced niche breadth and simplified co-occurrence networks with altered keystone taxa, indicative of a two-phase process: deterministic filtering of drought-sensitive taxa followed by stochastic reorganisation among survivors. Overall, our findings provide a framework for utilising soil archives in microbial ecology, showing that while air-drying introduces predictable distortions, samples retain essential ecological information for reconstructing historical microbial-environmental relationships at large scales.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序