我国海岸潟湖卫星遥感分类方法研究

Remote Sensing Based Method for Coastal Lagoon Classification

参照Landsat-5TM和HJ-1CCD遥感影像,依据实地踏勘资料及解译经验,分析各种海岸潟湖地貌学成因和发育演变阶段,提出基于潟湖地貌学成因的遥感分类方法。并将我国海岸潟湖划分为滨外坝型、沙坝型、沙嘴型、湾顶坝型、连岛坝型和河口型共6种地貌类型。建立基于发育演变阶段的潟湖遥感分类标准,将海岸潟湖分为青壮年期、老年期和死亡期共3个发育演变过程;结合潟湖在影像中的特征,以近红外、红、绿波段组合后的假彩色影像为例,从色彩、纹理、地物邻接关系等方面建立不同潟湖类型的遥感解译标志;根据所建立的遥感解译标志,对山东省53个海岸潟湖进行遥感分类验证,结果吻合。

Based on the field survey data and interpretation experience for satellite images,we analyzed the geomorphology causes and evolution phases for different types of coastal lagoon based on the Landsat-5 TM and HJ-1 CCD remote sensing images.The remote sensing based lagoon classification method with respect to the geomorphology causes was proposed,and China＇s coastal lagoons were classified into 6 kinds of landform types：offshore barrier type,barrier type,sand tsui type,bay top barrier type,tombolo type and estuary type.Then the evolution phases of the coastal lagoons were proposed：developing,stable and diminishing phases.According to the characteristics of the lagoon in the satellite image,composite false color images were generated with near infrared,red,and green bands as an example,and the image features for remote sensing interpretation of different types of lagoon were established with respect to the color,texture,spatial adjacency between objects etc.Based on the image features,coastal lagoons of Shandong province were classified,and the results were coincided with the field survey data.