【摘要】 自然岸线对于维护河道生态健康及生物多样性具有重要作用，文章通过遥感影像解译，识别了广东省不同岸线类型，基于自然岸线的概念内涵，构建了岸线分类方法。结果显示，广东省主要干流河道自然岸线保有率约40.83%,开发利用岸线比例约21.49%,小幅干扰岸线约占37.68%。对比不同干流河道的自然岸线保有率，西江>韩江>北江>东江>鉴江。从沿线分布来看，一般上游>中游>下游。东江干流自然岸线主要分布在河源河段，西江干流分布在云浮河段，北江干流分布在清远河段，韩江干流分布在潮州河段，鉴江干流分布在茂名河段。发现了自然岸线在人为活动、管理等方面面临的问题，提出了自然岸线保护的建议，以期为广东省自然岸线保护及生态修复提供借鉴，并为其他省类似工作提供参考。更多还原

【Abstract】 Natural shoreline plays an important role in maintaining river ecological health and biodiversity. Based on the concept and connotation of the natural shoreline, this paper has constructed a classification method and analyzed the types of shorelines of main rivers in Guangdong province by using remote sensing images. The results show that the retention rate of natural shoreline reaches 40.83%, 21.49% of the shoreline is developed, and 37.68% of the shoreline is slightly disturbed. The rank of natural shoreline retention rate in these main rivers is: Xijiang>Hanjiang>Beijiang>Dongjiang>Jianjiang. The rate in the upstream of these rivers is generally larger than the midstream and downstream. Generally speaking, the natural shorelines of the Dongjiang, Xijiang, Beijiang, Hanjiang and Jianjiang mainstream are mainly distributed in Heyuan, Yunfu, Qingyuan, Chaozhou, and Maoming, respectively. The problems of natural shoreline in man-made activities and management are discovered. Then the suggestions of natural shorelines protection are put forward.更多还原