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中国大陆海岸线近30a的时空变化分析

, PP. 31-42

Keywords: 海岸线,30a,时空变化,珠江口,杭州湾,长江口,黄河口

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Abstract:

基于遥感和地理信息系统的方法与技术,以1980、1990、2000和2010年4个时期为特征年,对近30年来我国大陆海岸线时空变化特征进行了分析研究。结果显示:(1)海岸类型转化显著,人工岸线所占比例由1980年的24.6%上升到2010年的56.1%;(2)海岸线变化呈现显著区域特征,变化较剧烈的区域集中在珠江口岸段、长江口-杭州湾岸段、海州湾-吕四段、滦河口-潍河口段及辽河口-葫芦岛港段;(3)3个时期相比,海岸开发由早期的围垦养殖向后期的城镇建设和海洋运输开发方式转变,并且这种转换方式在南方早于北方。

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