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Divergent edaphic filters drive ecosystem-specific microbiome assembly and metabolic strategies in Northern China's transitional zoneстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или ScopusДата последнего поиска статьи во внешних источниках: 1 апреля 2026 г.
- Авторы: Zhaojuan Zhang, Guo Songning, Li Xin, Wang Zifei, Han Xiao, Li Jiaxin, Li Zhuang, Zhao Jing, Stephenson Steven L., Gmoshinskiy V.I., Kurakov A.V., Li Yu, Liu Pu
- Журнал: Environmental Research
- Том: 299
- Год издания: 2026
- Издательство: Academic Press
- Местоположение издательства: United States
- Номер статьи: 124371
- DOI: 10.1016/j.envres.2026.124371
- Аннотация: Soil microbial communities are pivotal drivers of ecosystem processes; however, their responses to pedogenic settings and vertical stratiƭcation across ecological gradients remain inadequately characterized. In this study, we integrated soil physicochemical analyses, high-throughput 16S rRNA gene sequencing, and microbial metabolic proƭling across seven soil subtypes from forest (SSL) to grassland (SCD) ecosystems in the transitional ecoregions of Northern China. Soil subtypes were sampled at three depths (0–5, 5–10, and 10–15 cm). Our results demonstrated that soil type and depth exerted strong ƭltering effects on the microbial assembly. Within the surface soil layer (0–15 cm) examined in this study, SSL soils exhibited higher microbial metabolic activity (AWCD) and functional diversity than SCD soils. Carbon metabolism peaked in the surface layers. Bacterial species richness was greater in SCD soils, but the structure of the community present diverged signiƭcantly between ecosystems. The Proteobacteria and Acidobacteriota dominated in SSL, whereas the Proteobacteria and Actinobacteriota prevailed in SCD. Soil depth exerted a stronger diversity-reducing effect in SCD than in SSL. Redundancy and Mantel tests identiƭed soil water content, pH, and available phosphorus as key determinants of community variation. Functional potential prediction revealed enhanced aerobic chemoheterotrophy and nitrate reduction in SCD, while SSL was enriched in nitrogen ƭxation and pathogen-related taxa. These ƭndings demonstrated that ecosystem-speciƭc edaphic properties govern both taxonomic composition and functional attributes, highlighting the prevalence of niche-based assembly processes for soil microbiomes in transitional ecoregions
- Добавил в систему: Гмошинский Владимир Иванович
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