Abstract

Political attention for and research on nature-based solutions in coastal flood an erosion risk management has increased significantly in recent years. Literature suggests that there remains a historical inertia towards nature-based solutions due to the continued predominance of classical grey infrastructures like dikes and stone revetments. In this regard, Schleswig–Holstein can act as a living laboratory as it has a long tradition of applying grey and green infrastructures as well as nature-based measures like salt marsh enhancement techniques to protect against coastal flooding and erosion. Based on an assessment of structural and non-structural coastal flood and erosion risk management measures in Schleswig–Holstein, this paper elaborates on the prospects of grey and green infrastructures in the context of stronger sea level rise.

This article concludes that nature-bases solutions for coastal flood and erosion risk management are not a recent development. Nature-based management of green infrastructures can significantly improve their functionality, also with regard to the expected stronger SLR, and includes non-structural measures like codes and prohibitions. Green infrastructures and their nature-based management successfully complement and support grey infrastructures i.e., as green as possible, as grey as necessary. However, with the exception of dunes as natural flood defenses, green infrastructures cannot render grey infrastructures superfluous.

中文翻译：

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德国石勒苏益格-荷尔斯泰因州沿海洪水和侵蚀风险管理基于自然的解决方案的现状和前景

摘要

近年来，对沿海洪水和侵蚀风险管理的基于自然的解决方案的政治关注和研究显着增加。文献表明，由于堤坝和石头护岸等经典灰色基础设施的持续主导地位，基于自然的解决方案仍然存在历史惯性。在这方面，石勒苏益格-荷尔斯泰因州可以充当一个活生生的实验室，因为它有着应用灰色和绿色基础设施以及基于自然的措施（例如盐沼增强技术）以防止沿海洪水和侵蚀的悠久传统。本文基于对石勒苏益格-荷尔斯泰因州结构性和非结构性沿海洪水和侵蚀风险管理措施的评估，阐述了海平面上升加剧背景下灰色和绿色基础设施的前景。

本文的结论是，基于自然的沿海洪水和侵蚀风险管理解决方案并不是最近才出现的。基于自然的绿色基础设施管理可以显着改善其功能，也包括预期的更强的 SLR，并包括规范和禁令等非结构性措施。绿色基础设施及其基于自然的管理成功地补充和支持灰色基础设施，即尽可能绿色，必要时灰色。然而，除了沙丘作为天然防洪设施之外，绿色基础设施不能使灰色基础设施变得多余。