| 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。为了探究该海滩多年来的蚀淤特征及不同人类活动的影响, 本研究基于近8 a 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90 352.91 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, 万米海滩羊角畔附近海滩淤积量大, 与河口泥沙沉积有关, 其他两段海滩由于受到人类活动的频繁的影响, 常处于侵蚀状态下。 |
| 关键词: 砂质海岸侵蚀 海阳 侵蚀量 剖面 |
| DOI：10.11759/hykx20240826002 |
| 分类号:P67,P694 |
| 基金项目:国家重点研发计划项目(2022YFC3106100) |
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| Study on beach erosion characteristics and changes in Haiyang, Shandong Province |
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ZHANG Changle, WANG Yongzhi, DU Jun, TIAN Ziwen
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First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
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| Abstract: |
| The coastal zone, as a transitional area between land and ocean, holds significant ecological value. Sandy coasts, renowned for their natural beauty and suitability for leisure activities, often attract considerable attention. However, unregulated human activities frequently exacerbate coastal erosion. Haiyang City, located in Yantai, Shandong Province, is well-known for its abundant sandy coastal resources, particularly the famous Wanmi Beach. In recent years, however, the beach has experienced varying degrees of erosion. This study aims to analyze the erosion and siltation patterns of the beach over time and evaluate the impact of different human activities through both qualitative and quantitative assessments of annual erosion changes. The study utilizes UAV aerial imagery of the main beach area and data from typical beach profile measurements to analyze erosion characteristics and changes along different coastal sections. Furthermore, the erosion patterns across the main areas of Wanmi Beach are examined in relation to various types of human activities in the region. The results indicate that the eastern survey area is experiencing mild erosion, mainly influenced by a reduced sand supply. The east and west sides of the middle survey area are undergoing erosion, while significant siltation has occurred on both sides of the Yangjiaopan estuary in recent years, particularly from 2021 to 2023, with a total siltation volume of 90 352.91 m3. The western survey area is more influenced by nearby beach farming activities, resulting in alternating patterns of erosion and siltation on the beach surface. Consequently, the substantial siltation near Yangjiao Bay is attributed to sediment deposition in the estuary, whereas the other two sections of the beach remain predominantly in an erosive state. |
| Key words: sandy coast erosion Haiyang City erosion volume section |
