珠江口海岸线变化的遥感监测

Remote sensing monitoring of coastline changes in Pearl River Estuary

珠江口、香港及澳门地区海岸线的变化近十几年来十分迅速 ,采用常规方法及时、定量地测量这种变化十分困难。本研究应用多时相Landsat卫星遥感图像 ,采用神经网络分类方法 ,监测海岸线的变化并计算增长的陆地面积。结果表明 ,人为的围海造田 ,香港、澳门机场及相关高速公路、港口等设施的建设是海岸线变化的最主要原因。

The rapily changing coastal lines of Pearl River Estuary, Hong Kong and Macao have been observed recent years. Measurements of the coastal land growth are difficult to achieve in time by the traditional manner. This study focused on monitoring varying shorelines by using state-of-the-art remote sensing technology. The multi-temporal Landsat satellite data were used. Neural net classification was used to classify the lands growth due to shoreline changes in the different periods. Land reclamation and new airports in Hong Kong and Macao and related constructions were the most significant shoreling changes.