RESEARCH ON THE CHANGES OF COASTLINES IN LIAONING PROVINCE IN A CENTURY
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摘要: 基于RS和GIS技术，利用多期遥感影像数据，结合地形图、历史海图，定量分析了辽宁省海岸线近百年变迁特征.结果表明，自1909年以来，辽宁省海岸线的构型和长度发生了很大变化，陆地面积也相应增加.在全省范围内，从时序变化看，1909~1932年期间，海岸线变化最大，陆地面积增加最多，年增加速率也较快，1950~1980年期间，海岸线变化速率最小.从空间上看，各地段的岸线变化极不均衡，主要变化区域是辽东湾北部淤泥质海岸，大连附近的基岩岸段变化最小，最大的变化区段是双台子河段、复州湾和大洋河附近.Abstract: Based on RS and GIS, combined with multi-phase remote sensing image data, topographic maps and historical charts, this paper quantitatively analyses the feature of coastline changes in Liaoning Province during 100 years. It shows that since 1909, great changes of the formation and length of the coastline have taken place in Liaoning Province, with increasing of the land area. Throughout the whole province, in terms of the time change, the period from 1909 to 1932 saw the greatest change in the coastline and the largest increase in land area with fast annual increase rate. The period from 1950 to 1980 witnessed the minimum rate of shoreline change. In terms of space, shoreline change differs very uneven from place to place, with the main changes of muddy coast of Liaodong Bay in the northern area, least change of rocky section of the basement near Dalian, and the most significant change of Shuangtaizi River, Fuzhou Bay and Dayang River zone.
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Key words:
- shoreline change /
- coastal zone /
- remote sensing image /
- GIS /
- Liaoning Province
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