Optimized fertilizer-microbe ratios enhance synergistic restoration of alpine mining ecosystems
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View abstract on PubMed
Summary
This summary is machine-generated.This study shows that combining microbial inoculants and fertilizers effectively restores degraded alpine mining soils. This approach enhances vegetation, soil health, and microbial communities, offering a strategy for ecosystem rehabilitation.
Area Of Science
- Ecological Restoration
- Soil Science
- Microbial Ecology
Background
- Degraded alpine mining ecosystems face challenges with soil fertility, vegetation establishment, and microbial community function.
- Restoration strategies are needed for fragile alpine environments, particularly on the Qinghai-Tibet Plateau.
Purpose Of The Study
- To investigate the synergistic effects of compound microbial inoculants and forage-specific fertilizers on ecosystem restoration in a degraded alpine mining area.
- To establish a theoretical framework and technical approach for rehabilitating fragile alpine ecosystems.
Main Methods
- A three-year field experiment with a long-term plot design.
- Assessment of vegetation, soil physicochemical properties, and bacterial community structure using 16S rRNA gene sequencing.
- Multivariate statistical analyses including redundancy analysis (RDA) and structural equation modeling (SEM).
Main Results
- Optimized fertilizer-microbe treatment (W3J1) significantly promoted vegetation growth and improved soil carbon and nitrogen content.
- The treatment reshaped bacterial communities, enriched functional taxa (e.g., Pseudomonadota, Bacteroidota), and enhanced microbial network complexity.
- Synergistic effects operated via direct microbial regulation and vegetation-soil feedback, with soil pH as a key driver; excessive fertilization risks salinity rebound.
Conclusions
- Combined application of microbial inoculants and fertilizers provides a viable strategy for restoring degraded alpine mining ecosystems.
- This approach enhances vegetation, soil properties, and microbial community structure and function.
- Findings offer a theoretical basis and technical support for precise ecological restoration in fragile alpine environments.
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