Dune restoration projects that integrate vegetation efforts with natural, sustainable, and soft solutions have become increasingly popular in coastal communities. Eco-restored dunes have high aesthetic value and are likely to be more resilient to near-surface wind effects and/or minor storms events. However, environmental-friendly restoration strategies still lack scientific insight from systematic research and the role of eco-restoration in dune erosion resistance and resilience has not yet been rigorously investigated. The question is: how can we optimize eco-friendly solutions in dune ecosystem restoration to maximize the resistance and resilience of coastal dunes against erosion from wind, wave, and storm surge attack? The present paper proposes an innovative colloidal silica-based consolidation technique for coastal sand dunes. A special focus is placed on the description of the experience gained from two pilot field studies started in Salento coastal area, in the south of Italy. The preliminary observations clearly show that mineral colloidal silica increases the mechanical strength of non-cohesive sediments allowing the adopted solution to reduce the volume of dune erosion and the dune scarp retreat rate, thus improving the resistance and resilience of the dune system. Besides furthering our knowledge of coastal erosion, the results of these and future studies will be of value to coastal managers and policy makers responsible for dune restoration projects.

将植被工作与自然，可持续和软性解决方案相结合的沙丘恢复项目在沿海社区越来越受欢迎。生态修复的沙丘具有很高的美学价值，并且可能对近地表风影响和/或轻微风暴事件具有更大的适应性。然而，环境友好的恢复策略仍然缺乏系统研究的科学见解，生态恢复在沙丘抗冲性和恢复力中的作用尚未得到严格研究。问题是：我们如何在沙丘生态系统恢复中优化生态友好型解决方案，以最大限度地提高沿海沙丘对风，浪和风暴潮袭击造成的侵蚀的抵抗力和弹性？本文提出了一种创新的基于胶体二氧化硅的固结技术，用于沿海沙丘。特别着重于从意大利南部萨兰托沿海地区开始的两次试点实地研究中获得的经验的描述。初步观察结果清楚地表明，矿物胶态二氧化硅可提高非粘性沉积物的机械强度，从而使所采用的解决方案能够减少沙丘侵蚀的量和沙丘回缩率，从而提高沙丘系统的抵抗力和弹性。除了加深我们对海岸侵蚀的认识外，这些研究结果和未来的研究结果还将对负责沙丘修复项目的海岸管理者和决策者有价值。初步观察清楚地表明，矿物胶态二氧化硅提高了非粘性沉积物的机械强度，从而使所采用的解决方案能够减少沙丘侵蚀量和沙丘退缩率，从而提高沙丘系统的抵抗力和弹性。除了加深我们对海岸侵蚀的认识外，这些研究结果和未来的研究结果还将对负责沙丘修复项目的海岸管理者和决策者有价值。初步观察清楚地表明，矿物胶态二氧化硅提高了非粘性沉积物的机械强度，从而使所采用的解决方案能够减少沙丘侵蚀量和沙丘退缩率，从而提高沙丘系统的抵抗力和弹性。除了加深我们对海岸侵蚀的认识外，这些研究结果和未来的研究结果还将对负责沙丘修复项目的海岸管理者和决策者有价值。