Beach nourishment has complex implications for the future of sandy shores
Beach nourishment has complex implications for the future of sandy shores
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DOI：
10.1038/s43017-020-00109-9
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发表时间：
2021-01-01
影响因子：
42.1
通讯作者：
Schlacher, Thomas. A.
中科院分区：
文献类型：
--
作者：
de Schipper, Matthieu A.;Ludka, Bonnie C.;Schlacher, Thomas. A.
海滩营养----增加沙子以增加海滩的宽度或沙子体积----是一种广泛使用的海岸管理技术，以抵消海岸侵蚀。在全球范围内，海平面上升、风暴和沙子供应减少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，海滩营养实践已经从注重最大限度地延长沙子在海滩上停留的时间，发展到还包括人类安全和水上娱乐、地下水动态和生态系统影响。在这个角度来看，我们提出了一个多学科的概述海滩营养，讨论物理方面的海滩营养的生态和社会经济影响。海滩营养实践的未来将取决于当地的脆弱性、沙子的可用性、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。我们建议共同定位，多学科研究的综合影响，以及各种设计的探索，以指导这些全球多样化的营养做法。海滩营养是一个行之有效的工程实践，以减缓侵蚀和维持或扩大桑迪，但海平面上升，减少沙资源和娱乐，地下水和生态问题需要对这种沿海管理技术进行新的评估和设计。这个观点描述了桑迪海滩营养的多学科目标和影响。
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.Beach nourishment is a well-established engineering practice to slow erosion and maintain or expand sandy beaches, but sea level rise, diminishing sand resources and recreational, groundwater and ecological concerns require new assessments and designs of this coastal management technique. This Perspective describes the multidisciplinary aims and impacts of sandy beach nourishment.