中文摘要：

以国际空间站2012年3月27日于上海至苏州上空所摄夜间影像为基础数据,利用地理信息系统软件对影像所含地面灯光亮度、范围等特征进行提取和分析,探讨影像所含灯光信息与城市化的关系。研究显示,影像范围上海、苏州等四主要城市灯光区代表城市成熟建成区;各城市室外照明单位面积平均亮度及耗能基本相同;四城市人口总量与城市灯光区面积成线性关系,灯光区人口密度可分为7 000人/km^2和12 000人/km2两级;城市未来几年扩张方向与范围可由城市灯光连片区向外伸出的灯光条带判断。城市夜间影像所含城市化信息,在即将开始的中国新型城镇化建设决策中可发挥一定作用。

英文摘要：

Based on the night-time astronaut images taken in the international space station on March 27,2012 by the Expedition 30 crew over Shanghai and Suzhou,we extracted and analyzed the land surface night light brightness,distribution and extent from the images using geographic information system. Furthermore,we explored the relationship between the image data and urbanization. The results show that the areas of night light coincide with those of maturely built-up cities;the average outdoor lighting brightness and electric energy consumption of per unit area in different cities are almost equal; the population in four cities have good linear relation with their lighting areas;the population density can be divided into two levels by the scales of city lighting areas：about7 000 persons/km^2 in medium and small cities and about 12 000 persons/km2 in large cities;the expansion direction and ranges of the cities in the coming years can be estimated by a series of ribbon-like road lighting distribution. As night-time images contain useful information of urbanization,night-time remote sensing image researches can play an important role in the upcoming new urbanization of China.