| 摘要: |
| 海岸带作为连接陆地与海洋的过渡地带，承载着独特的生态价值。砂质海岸因其独特的自然风光和适宜的休闲环境备受关注，但有时无序的人类活动扰动往往导致砂质海岸侵蚀或侵蚀加剧。山东省烟台海阳市拥有优良的砂质海岸资源，以万米海滩闻名，但近年来该海滩遭受到不同程度的侵蚀。本研究基于近8年万米海滩主要区域的无人机航摄影像及典型海滩剖面调查数据，定量化研究了海滩侵蚀年变化量，阐明了不同岸段的侵蚀特征及其变化，结合区域人类活动类型，揭示了万米海滩主要区域的侵蚀规律。研究表明，东段研究区处于弱侵蚀状态，受区域来沙减少的影响，凤翔滩和万米海滩浴场遭受到不同程度侵蚀。中段研究区东西两侧表现为侵蚀，但羊角畔河口两侧近年来淤积显著，尤以2021-2023年淤积量最大，总体淤积量达到90352.91 m3。西段研究区受周边养殖活动影响较大，滩面侵蚀与淤积互有发生。因此，万米海滩主要区域除羊角畔湾口海域，其他大部分海滩多处于侵蚀状态。 |
| 关键词: 砂质海岸侵蚀 海阳 侵蚀量 剖面 |
| DOI： |
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| 基金项目:国家重点研发计划,典型海岸侵蚀防护与活力海岸构建关键技(2022YFC3106100)； |
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| Study on the beach erosion characteristics and its changes in Haiyang, Shandong Province |
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Zhang Chang-le, Wang Yong-zhi, Du Jun, Tian Zi-wen
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First Institute of Oceanography,Ministry of Natural Resources
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| Abstract: |
| The coastal zone, serving as a transitional area connecting land and ocean, possesses unique ecological value. Sandy coasts attract much attention for their unique natural scenery and suitable leisure environment, but disordered human activities often lead to increased erosion. Haiyang city, located in Yantai of Shandong province, has excellent sandy coastal resources and is famous for its Wanmi beach, but the beach has suffered varying degrees of erosion in recent years. Based on the data of UAV photography and typical profiles survey in the main area of Wanmi beach in recent 8 years, this study quantified the annual beach erosion variation, clarified the erosion characteristics and its changes, and combined with the types of human activities, revealed the erosion law of the main area of Wanmi beach. The result shows that the eastern survey area is in weak erosion, and the beach is affected by the reduced sand supply. The east and west sides of the middle survey area are in erosion, but both sides of Yangjiaopan estuary have been silted up significantly in recent years, especially in 2021-2023, and the overall siltation volume reached 90352.91 m3. The western survey area is more affected by the surrounding beach farming activities, and the beach surface erosion and siltation occur in each other. Therefore, the main area of Wanmi beach except the Yangjiaopan estuary sea area, most of the beach is in erosion. |
| Key words: sandy coast erosion Haiyang erosion volume section |