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| Citation: | Liu Jin, Huang Tingwei, Che Wenyue, Wu Peng, Peng Jianbing, Sun Mengya, 2026. Development of an Adjustable Hydrogel Material for Ecological Restoration in the Qinling Mountains: Reconstructed Performance and Microscopic Mechanism. Earth Science, 51(2): 419-431. doi: 10.3799/dqkx.2025.115
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To address the diverse characteristics of ecological degradation and the limited efficiency of ecological restoration in the Qinling Mountains, this study investigates a tunable hydrogel material physically crosslinked from polyvinyl alcohol (PVA) and gellan gum (GG). A series of laboratory experiments were conducted to comprehensively analyze the properties of the hydrogel and its effects on reconstructed soil. The results indicate that: (1) the PVA-GG hydrogel exhibits excellent water retention and biodegradability, with a degradation rate of 18.2% after one month in a natural environment; the mechanical properties of the soil improve with increasing PVA content. (2) Soil particles and the hydrogel form binary aggregates, effectively enhancing the soil's water-holding capacity, crack resistance, water stability, and ecological restoration capability by leveraging the hydrogel's advantages. (3) After low-temperature curing, the hydrogel forms a film-like matrix that closely integrates with soil particles through encapsulation, adhesion, and pore-filling, resulting in a compact aggregate structure. As a tunable material, the hydrogel shows promising potential for ecological restoration across various degraded units in the Qinling Mountains.
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Xu, P. P., Shen, Y. J., Peng, J. B., et al., 2024. Typed Architecture of Valley Road in Northern Foothills of Qinling Mountains Based on Concept of Ecological-Economic-Social Collaborative Development. Earth Science, 49(12): 4564-4575(in Chinese with English abstract).
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Zhang, J. W., Li J. R., Qian, S. Y., et al., 2025. Study on Rain Erosion Resistance Characteristics of Soil Slope Improvement Based on Nano-SiO2-CMC Composites. Acta Materiae Compositae Sinica, 43(1): 383-394 (in Chinese with English abstract).
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张建伟, 李家瑞, 钱思羽, 等, 2025. 基于纳米SiO2-CMC复合材料改良遗址土边坡抗雨蚀特性研究. 复合材料学报, 43(1): 383-394.
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