面向秦岭生态修复的可调型水凝胶材料构建:重构性能与微观机理

doi:10.3799/dqkx.2025.115

面向秦岭生态修复的可调型水凝胶材料构建:重构性能与微观机理

doi: 10.3799/dqkx.2025.115

1. 河海大学地球科学与工程学院, 江苏南京 211100;
2. 长安大学地质工程与测绘学院, 陕西西安 710054;
3. 生态地质与灾害防控自然资源部重点实验室, 陕西西安, 710054

基金项目:

长安大学中央高校基本科研业务费专项资金资助(No.300102265504)

国家自然科学基金面上项目(No.42472333).

详细信息

作者简介:
刘瑾(1983-),女,教授,博士生导师,主要从事工程地质和生态地质等研究.Email:jinliu920@163.com,ORCID:0000-0001-7654-255X

中图分类号: TU42
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出版历程
- 收稿日期: 2025-04-15
- 网络出版日期: 2025-07-01

Development of an Adjustable Hydrogel Material for Ecological Restoration in the Qinling Mountains: Reconstructed Performance and Microscopic Mechanism

1. School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China;
2. Department of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, China;
3. Key Laboratory of Ecological Geology and Disaster Prevention. Ministry of Natural Resources, Xi'an 710054, China

摘要

摘要: 为解决秦岭生态受损特征多样和生态恢复效率不足等问题，本文研究了一种聚乙烯醇（PVA）和结冷胶（GG）物理交联的可调型水凝胶材料。通过一系列室内试验，综合分析了水凝胶及其重构土壤的性能。结果表明：（1） PVA-GG水凝胶具有良好的保湿性和生物降解性，且置入自然环境中一个月可降解18.2%；土壤力学性能随着PVA质量比的增加而提高。（2）土颗粒与水凝胶形成了二元团聚体，融合水凝胶优势有效地提高了土壤的保水性、抗裂性、水稳定性和生态修复性。（3）水凝胶经低温固化后形成膜状基质，与土颗粒包裹、黏附和填充构成紧密的团聚体结构。水凝胶作为一种可调型材料，面对秦岭不同受损单元的生态修复具备应用潜力。
- 秦岭 /
- 受损单元 /
- 水凝胶 /
- 土壤重构 /
- 生态修复
Abstract: 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 waterholding capacity, crack resistance, water stability, and ecological restoration capability by leveraging the hydrogel's advantages. (3) After low-temperature curing, the hydrogel forms a filmlike matrix that closely integrates with soil particles through encapsulation, adhesion, and porefilling, 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.
- Qinling Mountain /
- damaged unit /
- hydrogel /
- soil reconstruction /
- ecological restoration

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参考文献(38)

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面向秦岭生态修复的可调型水凝胶材料构建:重构性能与微观机理

doi: 10.3799/dqkx.2025.115

作者简介:
刘瑾(1983-),女,教授,博士生导师,主要从事工程地质和生态地质等研究.Email:jinliu920@163.com,ORCID:0000-0001-7654-255X

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Development of an Adjustable Hydrogel Material for Ecological Restoration in the Qinling Mountains: Reconstructed Performance and Microscopic Mechanism

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面向秦岭生态修复的可调型水凝胶材料构建:重构性能与微观机理

doi: 10.3799/dqkx.2025.115

作者简介: 刘瑾(1983-),女,教授,博士生导师,主要从事工程地质和生态地质等研究.Email:jinliu920@163.com,ORCID:0000-0001-7654-255X

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出版历程

Development of an Adjustable Hydrogel Material for Ecological Restoration in the Qinling Mountains: Reconstructed Performance and Microscopic Mechanism

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出版历程

目录

作者简介:
刘瑾(1983-),女,教授,博士生导师,主要从事工程地质和生态地质等研究.Email:jinliu920@163.com,ORCID:0000-0001-7654-255X