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Updated: Feb 2, 2026

A CO2 Concentration Gradient Facility for Testing CO2 Enrichment and Soil Effects on Grassland Ecosystem Function

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Published on: November 21, 2015

温帯山岳生態系の標高勾線にわたる土壌における根圏微生物機能が土壌生態学的化学量論を駆動する

Yi Yang^1,2,3,4, Kaiyang Qiu^5,6,7,8, Yanqing Zhang^1,2,3,4

¹School of Forestry and Grassland Science, Ningxia University, Yinchuan, China.

Communications biology

|January 31, 2026

まとめ

土壌微生物群集は土壌栄養バランスに決定的な影響を与える。根圏微生物群集内の機能遺伝子は、土壌炭素、窒素、リン化学量論の主要な駆動要因であり、気候と栄養循環を結びつける。

科学分野:

Soil Science; Microbiology; Ecology

背景:

The soil microbiome is crucial for nutrient cycling and ecological stoichiometry.
Understanding the link between rhizosphere microbiomes and soil nutrient characteristics is limited.

研究の目的:

To investigate the relationships between rhizosphere microbiomes and soil ecological stoichiometric characteristics (soil carbon, nitrogen, phosphorus) along an elevational gradient.
To identify the key drivers of soil stoichiometric characteristics in a temperate mountain ecosystem.

主な方法:

Investigated rhizosphere microbiomes of 20 dominant plant populations across 17 sites along a ~2190m elevational gradient.
Integrated environmental factors, microbial community structure, functional genes, microbial biomass, and soil stoichiometric characteristics.
Utilized structural equation modeling to determine causal relationships.

主要な成果:

Ectorhizosphere soil stoichiometry was significantly associated with microbial biomass, community composition, and C-, N-, and P-cycling genes.
Functional genes were the strongest predictors of soil stoichiometric characteristics.
Rhizosphere microbiome composition and functional gene diversity were identified as key drivers.

結論:

The rhizosphere microbiome acts as a biological filter, connecting climate influences to soil nutrient stoichiometry.
Functional genes within the microbiome play a critical role in regulating soil C, N, and P balance.
Understanding these rhizosphere-microbiome-soil stoichiometry links is vital for ecosystem management.

キーワード:

土壌微生物群集機能遺伝子土壌化学量論根圏山岳生態系栄養循環

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