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根据对辽东湾顶东部的实地考察,本文综合利用RS/GIS技术方法,提出了岸线解译原则,采用多期TM/ETM+影像、CEBERS-02B高分辨率多光谱影像等数据,提取了1979年-2011年逐年的矢量岸线,量化分析了综合开发治理下研究区的海岸变化,为综合治理提出了科学建议。研究表明,研究区:①岸线延续增长趋势,曲率变小,由自然圆滑变为平直曲折,围海造陆已逐渐脱颖而出为主要变化形式;②海岸变化时空分异,三角洲湿地退化从面积减少变为自然湿地向人工湿地转化、河口地区围海填土面积趋于指数增加、砂质岸段侵蚀在防浪堤作用下得到有效缓解,反映出在相对稳定的自然条件下,社会因素成为变化的主要推动力,不同政策和规划对岸线形态塑造的巨大差异;③针对强度大、速度快的人类活动,使用时间尺度小密度高的逐年监测与传统大尺度监测相结合的方法分析,对监测海岸线的开发和治理、及时调整应对岸线变化的措施有重要帮助。
Based on the field investigation of eastern part of Liaodong Bay, this paper presents the principle of shoreline interpretation by comprehensively using RS / GIS techniques. The data of multi-period TM / ETM + images and CEBERS-02B high resolution multispectral images are used to extract 1979 Year-2011 year-by-year vector of the coastline, quantitative analysis of the coastal area under the comprehensive development and management of changes in the study for the comprehensive management made scientific recommendations. The results show that the study area: ① The coastline continues to grow, the curvature becomes smaller and turns smoothly from nature to straight and tortuous, and the land reclamation has gradually emerged as the main variation; ②The spatial and temporal variability of coastal changes and the degeneration of deltaic wetlands decrease from the area The natural wetlands transform into constructed wetlands, and the area of fill in the coastal estuaries tends to increase exponentially. The eroded sandy beach segments can be effectively relieved by the breakwater. This reflects that under the relatively stable natural conditions, the social factors have changed The main driving forces of different policies and planning on the shape of the shoreline form a huge difference; ③ For intensity and speed of human activities, the use of time-scale high-density year-on-year monitoring and traditional large-scale monitoring method of combining the analysis of the It is important to monitor the development and management of the coastline and adjust timely measures to deal with changes in the coastline.