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| Citation: | Li Qi, Zhang Pengfei, Shen Yifan, Li Yuhang, Jin Bo, Wei Renjie, Luo Jing, Zhang Weibiao, Zhang Xiaochao, Lei Ningfei, Pei Xiangjun, 2026. Characteristics of Soil Nutrient and Microbial Community Evolution in Ecologically Restored Areas Affected by Engineering Disturbance in High-Altitude Alpine Meadows. Earth Science, 51(9): 3309-3319. doi: 10.3799/dqkx.2025.302
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Engineering disturbances accelerate the degradation of alpine meadows, but restoring degraded areas through ecological remediation helps maintain regional ecosystem stability. This study investigates changes in soil nutrients and microbial community characteristics over three years of ecological restoration, using soil from the ecologically restored roadside slopes in the Wangbuqu Meadow as the research subject. Results indicate that organic carbon, total nitrogen, ammonium nitrogen, and available potassium content in post-restoration soil significantly increased by 344.6%, 95.8%, 139.9%, and 174.1%, respectively. Microbial community diversity progressively enhanced, with rising temporal trends in the abundance of Acidobacteria, Chloroflexi, Bacteroidetes, and Gemmatimonadetes. Concurrently, soil urease, protease, and sucrase activities markedly intensified. Partial Least Squares-Path Modeling (PLS-PM) analysis reveals that remediation duration served as the primary driver for soil organic carbon and nutrient recovery, facilitating synergistic restoration of soil and microbial communities by influencing microbial community structure and soil enzyme activity. This study provides empirical support for soil recovery outcomes evaluation in disturbed alpine meadow ecosystems.
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