海岸线变迁及驱动因素进展研究

Changes of Coastline and Its Driving Factors

海岸线是陆地和海洋的分界线,是地球表层生态环境最敏感、响应全球变化最迅速的生态脆弱带,中国海岸线类型丰富,总长度达32 000多千米,因此,研究海岸线的变迁及其驱动因素具有重要的现实意义。文章首先总结了海岸线的定义及分类,探讨了海岸线定义不明确的问题;然后讨论了国内外利用遥感影像提取海岸线的方法及存在的问题,总结了海岸线的时空变迁及其驱动力研究进展状况,分析了国内外研究的差异;最后针对现有研究的不足,提出几点建议。

The coastline is the dividing line bet-ween land and ocean, and it is the most sensitive and rapid response to the ec-ological environment of the earths surface. The total length of China’s coastline is more than 32 thousand Therefore ’ it is great practical significance to study the changes of the coastline and its driving factors. This zes the definition and classification of the current coastline, and discusses the problem of the definition. Then the methods of using remote sensing image to extract coastline in China and abroad and analyzes the problems about the methods. It also summarizes the research progress of the time and space changes of coastline and its driving forces ’ and analyzes the differ-ences bet-ween domestic and international research. Finally ’ some suggestions are put fonvard for the deficiency of the existing re-search ：In the future research the definition of the coastline should be defined, and the method of extracting the coastline should be unified. In addition ’ we should tr to explore the la-w of the spatial and temporal changes of the coastline ty to study the driving mechanism of the coastline by the method of quantitative analysis.