近40年来鸭绿江口地区动态变化研究

为了研究鸭绿江口地区近40年来河岸、岛屿的变迁,冲刷和淤积情况。以1968年的侦察卫星遥感影像,2000年左右的ETM要遥感影像,2008年的ALOS遥感影像作为数据源,进行河岸岛屿等专题信息的提取,并对提取结果进行GIS空间分析来研究河岸、岛屿的时空动态变化。研究表明:40年来,由于自然和人为因素的影响,朝方和中方的面积都有所增加,但是朝方面积的增长率近我国增长率的80倍。增长速率近我国增长速率的10倍。

Dynamic Changes of Yalujiang River mouth in the recent 40 years

In order to search the situation of riverbanks and islands’ shifting,erosion and sediment deposition of the Yalujiang River mouth in nearly 40 years,the reconnaissance satellite’s remote sensing images of 1968 is taken,the ETM remote sensing images of 2000,the ALOS remote sensing images of 2008 as data sources.Then it extracts the information of riverbanks and islands and does overlay analysis on the extraction results in GIS to study the temporal and spatial dynamic change of riverbanks and islands.The result shows that:in recent 40 years,due to the effect of natural condition and man’s factors,the area of both China and North Korea have increased,but the growth area of North Korea is 80 times of that of China.The growth rate is nearly 10 times of that of China.