Rising sea level and increasing tropical storm frequency caused by the changing climate are threatening small Island economies which depend on their coastal environments and resources. Owing to the high socio-economic and environmental values of tropical sandy beaches, monitoring the evolution trends of shorelines are regarded as an essential strategy to improve the resilience of Island states. The present study conducted in Mauritius, indicates a net erosional effect at Le Morne amounting to 8049.7 ± 5% m² which is attributed to the hydrodynamics of the lagoon, whilst a net accretional effect has been observed at Flic-en-Flac, equivalent to 6571.3 ± 5% m² and attributed to periodic beach nourishments. The shoreline evolution at Le Morne is predominantly influenced by Passe de la Prairie where an average energy of 0.162 m²/Hz, corresponding to an average wave height of 1.16 m, carries enough energy and momentum to influence the sediment transport near the peninsula. At Flic-en-Flac, longshore currents propagating on either sides of the central region and directed northwards and southwards influence the shoreline, resulting in an accretion zone extending 62.5 ± 15 m near Villa Caroline over the 2009–2018 period. To dampen this problem, a beach management strategy is proposed which revolves around the restoration of corals in front of eroded shores, replacement of casuarina trees, and enforcement of regulatory laws.

气候变化引起的海平面上升和热带风暴频率的增加正在威胁依赖沿海环境和资源的小岛屿经济体。由于热带沙滩具有很高的社会经济和环境价值，因此监测海岸线的演变趋势被认为是提高岛国恢复力的重要策略。目前在毛里求斯进行的研究表明，Le Morne 的净侵蚀效应达 8049.7 ± 5% m ²，这归因于泻湖的流体动力学，而在 Flic-en-Flac 观察到了净增积效应，相当于6571.3 ± 5% 米²并归因于定期的海滩营养。Le Morne 的海岸线演变主要受 Passe de la Prairie 的影响，那里的平均能量为 0.162 m ² /Hz，对应于 1.16 m 的平均波高，携带足够的能量和动量来影响半岛附近的沉积物输送。在 Flic-en-Flac，在中部地区两侧传播并向北和向南传播的沿岸流影响海岸线，导致在 2009-2018 年期间在 Villa Caroline 附近形成了一个延伸 62.5 ± 15 m 的吸积带。为了解决这个问题，提出了一种海滩管理策略，该策略围绕着被侵蚀海岸前的珊瑚恢复、更换木麻黄树和执行监管法律。