Beach nourishment — the addition of sand to increase the width or sand volume of the beach — is a widespread coastal management technique to counteract coastal erosion. Globally, rising sea levels, storms and diminishing sand supplies threaten beaches and the recreational, ecosystem, groundwater and flood protection services they provide. Consequently, beach nourishment practices have evolved from focusing on maximizing the time sand stays on the beach to also encompassing human safety and water recreation, groundwater dynamics and ecosystem impacts. In this Perspective, we present a multidisciplinary overview of beach nourishment, discussing physical aspects of beach nourishment alongside ecological and socio-economic impacts. The future of beach nourishment practices will vary depending on local vulnerability, sand availability, financial resources, government regulations and efficiencies, and societal perceptions of environmental risk, recreational uses, ecological conservation and social justice. We recommend co-located, multidisciplinary research studies on the combined impacts of nourishments, and explorations of various designs to guide these globally diverse nourishment practices.

养海滩（添加沙子以增加海滩的宽度或沙子量）是一种广泛的海岸管理技术，可以抵消海岸侵蚀。在全球范围内，海平面上升，暴风雨和沙土供应减少正威胁着海滩及其提供的娱乐，生态系统，地下水和防洪服务。因此，海滩养护方式已经从专注于最大程度地延长沙子在海滩上停留的时间演变为也涵盖了人类安全和水上娱乐，地下水动态和生态系统影响。在此观点中，我们提供了海滩营养的多学科概述，讨论了海滩营养的物理方面以及生态和社会经济影响。海滩养分做法的未来会因当地脆弱性，沙滩供应情况，财政资源，政府法规和效率，以及社会对环境风险，娱乐用途，生态保护和社会正义的看法。我们建议对营养的综合影响进行同一地点的多学科研究，并探索各种设计以指导这些全球多样化的营养实践。