【摘要】 日月岛工程的建设,使日月湾海湾的侵蚀和淤积在短期内发生了快速的变化,西南侧海岸的侵蚀威胁了陆侧青皮林自然保护区的生长。对日月湾海岸进行监测管理变得刻不容缓。结合多时相遥感影像和四期实测岸滩数据,探讨日月岛工程的建设对日月湾海岸的冲淤影响。日岛岛影区岸滩淤涨,2016年已形成连岛沙坝,总淤积宽度约370 m,长度约1500 m;日岛东北侧受日岛建成后波浪折射与绕射等的影响发生侵蚀现象,最大侵蚀宽度约20m,长度约380 m。日岛西南侧出现严重的侵蚀后退现象,侵蚀宽度约40 m,长度约2000 m。月岛工程的建设改善了西南侧的侵蚀现象,然而仍有约800 m的岸线处于侵蚀状态。综合考虑自然因素与技术条件,丁坝、人工补沙与厚藤生态养护结合的海岸修复方式是适用于日月湾海岸的修复方法。更多还原

【Abstract】 The construction projects on artificial Riyue islands have led to a fast change of coastal erosion and deposition on Riyue bay.The erosion of the southwest coast has threatened the development of the vitica mangachapoi forest natural reserves on the land.Monitoring and management of Riyue bay becomes an urgent demand.With the studies of multi-temporal remote sensing images and four groups of costal testing data,following erosive and depositional effects of constructions on Riyue bay can be discussed.Due to the depositional growth of shadow zone of artifical Riyue islands,a tombolo was formed in 2016 with a width of 370 meters and a length of 1,500 meter; at the northeast side of artifical Ri island,erosion was created because of the wave refraction and diffraction after the construction was done,witch with a width of 20 meters and a length of 380 meters.At the southeast side of artifical Ri island,severe erosions and retreats were found.The erosive width is around 40 meters and the erosive length is around 2,000 meters.The construction projects on artifical Yue island have improved the erosive problems on southeast side.However,800 meters of costal line still lays in an erosive state.Considering the natural situations and technical capacities comprehensively,the combination of groyne,artificial sand filling as well as ecological conservation of ipomoea pes-caprae would be the most suitable solution.更多还原