Guangdong Engineering Research Centre for Major Infrastructures Safety, School of Civil Engineering, Sun Yat-sen University, Guangzhou, China.
Guangzhou Engineering Research Centre for Major Infrastructures and Safety in Transporation, School of Civil Engineering, Sun Yat-sen University, Guangzhou, China.
PLoS One. 2024 Apr 3;19(4):e0299323. doi: 10.1371/journal.pone.0299323. eCollection 2024.
Ester materials have become a significant topic in ecological restoration because of their degradability and lack of pollution. However, these artificial materials have issues such as high resource consumption and high cost. Therefore, finding a scientific substitute for ester materials is crucial to reduce costs. This study proposes the use of weathered red-bed soil to partially replace ester materials. Orthogonal coupled compounding and ecological effect tests were performed to analyze the soil improvement mechanism based on the mineral composition, soil structure, and electrical conductivity properties of the weathered red-bed soil. The experimental findings indicated that the soil modified using ester materials exhibited improved strength, water retention, and aeration owing to changes in the soil structure. Plant germination and height increased by 55% and 37 mm, respectively, when using a ratio of 15 g/m2 absorbent ester material, 2.5 g/m2 adhesive ester material, and 5% weathered red-bed soil. Through this approach, the amount of ester material to be used could be further reduced by 75%. The weathered red-bed soil offers improved ecological effects by altering the physical, mechanical, and hydraulic properties of the soil structure. This study presents a theoretical foundation for ecological conservation using weathered red-bed soil as a substitute for certain ester materials.
酯类材料由于其可降解性和无污染性而成为生态修复的重要课题。然而，这些人工材料存在资源消耗高和成本高的问题。因此，寻找酯类材料的科学替代品对于降低成本至关重要。本研究提出使用风化红壤部分替代酯类材料。通过正交耦合并进行生态效应测试，基于风化红壤的矿物组成、土壤结构和电导率特性，分析土壤改良机理。实验结果表明，由于土壤结构的变化，用酯类材料改良的土壤的强度、保水性和透气性得到了提高。使用 15g/m2 吸收性酯类材料、2.5g/m2 粘性酯类材料和 5%风化红壤的比例，植物发芽率和高度分别提高了 55%和 37mm。通过这种方法，可以进一步减少 75%的酯类材料用量。风化红壤通过改变土壤结构的物理、力学和水力性质，提供了更好的生态效应。本研究为风化红壤作为某些酯类材料的替代品进行生态保护提供了理论基础。
