| 基于无人机和遥感的江苏中部海岸线变迁和潮滩侵淤动态监测 |
| Monitoring Coastline Changes and Tidal Flat Erosion-Deposition Dynamics in Central Jiangsu Using UAV and Remote Sensing |
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| DOI：doi：10.3969/j.issn.1003-2029.2026.02.005 |
| 中文关键词: 潮汐校正 遥感 无人机 海岸线 侵蚀特征 |
| 英文关键词:tide correction remote sensing UAV shoreline erosion characteristics |
| 基金项目: |
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| 中文摘要: |
| 海岸线变迁和潮滩侵淤监测对海洋保护利用具有重要作用。本文以江苏中部海岸为研究对象，采用基于潮位校正的海岸线提取和潮滩无人机地形测量方法，系统分析了海岸线位置和滩面高程变化特征。研究结果表明：2022—2023 年，江苏中部海岸线整体向岸后退，平均后退速率为-26.33 m/a，其中，射阳河口—四卯酉河口岸段后退最为剧烈。江苏中部潮滩整体下蚀，平均下蚀速率为-0.21 m/a，潮滩下蚀速率呈现北低南高的趋势，下蚀最为剧烈的为大丰港北侧区域，江苏中部海岸侵蚀呈现向南扩展的趋势。研究证实融合卫星遥感与无人机观测技术，能够有效捕捉淤泥质海岸多尺度、短周期的演变特征，可为海岸带韧性管理和生态保护提供精准的数据支撑。 |
| 英文摘要: |
| Effective monitoring of coastline dynamics and tidal flat erosion-deposition processes is fundamental to marine conservation and sustainable resource utilization. This study, focused on the central Jiangsu coast, systematically quantified changes in shoreline position and tidal flat elevation by employing a tide-level-corrected coastline extraction method and UAV-based topographic surveying. The results demonstrated that between 2022 and 2023, the central Jiangsu coastline underwent an overall landward retreat at a rate of -26.33 m/a. The most significant retreat was observed along the segment between the Sheyang River Estuary and the Simaoyou River Estuary. Concurrently, the tidal flats experienced overall downwearing at an average rate of -0.21 m/a. This erosion displayed a distinct spatial pattern, with lower rates in the north and higher rates in the south. The most severe downwearing was identified north of Dafeng Port. These findings reveal that coastal erosion in central Jiangsu is intensifying and expanding southward. The study confirms that an integrated approach combining satellite remote sensing with UAV observations can effectively capture the multi-scale and short-term evolutionary characteristics of siltmuddy coasts, thereby providing accurate data to support resilient coastal zone management and ecological protection strategies. |
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