台风过程中红树林海岸防护功能研究:以广东阳江海陵岛为例

张黄琛; 冯孟佳; 熊兰兰; 薛力铭; 徐天平; 胡湛; 刘泽正

doi:10.13205/j.hjgc.202502018

台风过程中红树林海岸防护功能研究:以广东阳江海陵岛为例

doi: 10.13205/j.hjgc.202502018

1. 广东省海洋发展规划研究中心, 广州 510220;
2. 中山大学海洋科学学院, 广东珠海 519082

基金项目:

广东省自然科学基金杰出青年项目“广东省红树林生态海岸防护体系的构建和减灾效能应用研究”(2024B1515020066)

国家自然科学基金面上项目“波流斜交流态下红树林植被消浪机理研究”(42176202)

广东省自然资源厅2024年海洋生态修复综合管理技术支撑专项资金项目“广东省典型红树林海岸防灾减灾功能与效益研究”(440000240000000003967)

详细信息

作者简介:
张黄琛(1990-),男,博士,主要从事海洋生态学研究。zhhc0516@126.com

通讯作者:
熊兰兰(1986-),女,博士。290836778@qq.com

计量
- 文章访问数: 126
- HTML全文浏览量: 22
- PDF下载量: 2
- 被引次数: 0
出版历程
- 收稿日期: 2024-12-02
- 录用日期: 2025-01-06
- 修回日期: 2024-12-25

Coastal defense in typhoon by mangroves: A case study of Hailing Island, Yangjiang, Guangdong

1. Guangdong Center for Marine Development Research, Guangzhou 510220, China;
2. School of Marine Science, Sun-Yat-Sen University, Zhuhai 519082, China

摘要

摘要: 红树林生态系统位于陆海生态廊道的关键节点,对于维系海洋水文-生物连通具有重要作用。受数据可利用性与观测手段限制,台风过程中红树林调节水动力、实现海岸防护的能力仍不明确,这制约了海岸防护功能提升的工程实践。以广东阳江海陵岛红树林为例,基于Delft3D FM-Delft3D耦合模型以及现场实测资料,模拟分析了极端条件(2024年超强台风“摩羯”)下,红树林对风暴潮水位和波高的衰减作用。结果表明,利用该模型较好地再现了沿外海-光滩-红树林这一环境梯度的风暴增水和波浪传播过程,红树林的波高衰减率为(0.29~0.64)%/m,水位衰减率为1.46~18.69 cm/km,高于光滩和无植被情景。植被对波高衰减贡献达43%~69%,远高于对水位的衰减贡献(0.2%~32%)。研究揭示了红树林在台风过程中对水位和波高衰减能力的变化特征,为基于自然的海岸防护体系建设提供了参考。
- 红树林 /
- 台风 /
- 风暴潮 /
- 海岸防护 /
- 减灾
Abstract: Mangroves are located at the key intersections on the sea-to-land ecological corridor, playing a pivotal role in sustaining maritime hydrology-biology connectivity. Limited by data availability and observation technology during typhoon events, the capacity of mangroves to regulate hydrodynamic processes and deliver coastal protection functions as a consequence, remains unclear till now, which would hamper further engineering practice in coastal protection. In this study, we set the mangroves on Hailing Island, Guangdong Province, China, as a representative case, to investigate the attenuation of storm surge and wave heights by mangrove forests, under typhoon conditions (super typhoon Yagi in 2024). The analysis used a coupled Delft3D FM-Delft3D model framework, validated with in-situ measurements collected during the event. The results revealed that the coupled model successfully simulated the storm surge and wave propagation processes across the environmental gradient from open sea to mudflat, and further into the mangrove forest. The wave height attenuation rate of mangroves ranged from 0.28% to 0.64% per meter, and the water level attenuation rate varied between 1.46 cm and 18.69 cm per kilometer, outperforming the attenuation rates in mudflat and unvegetated scenarios. Furthermore, the contribution of mangrove vegetation to wave height attenuation ranged from 43% to 69%, markedly higher than its contribution to water level attenuation, which ranged from 0.2% to 32%. This study highlights the variability in attenuation capacities of mangrove forests for storm surges and wave heights under typhoon conditions. These findings provide valuable scientific evidence supporting the integration of mangroves into nature-based coastal defense strategies, highlighting that the conservation and restoration of mangrove ecosystems offer sustainable solutions to mitigate the impacts of extreme weather events and would consequently contribute to long-term coastal resilience and disaster risk reduction.
- mangrove /
- typhoon /
- storm tide /
- coastal protection /
- disaster mitigation

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