连云港城市扩展及其驱动力分析

Analysis of the Urban Expansion of Lianyungang and its Driving Force

利用多时相遥感影像、社会经济统计数据以及其他辅助资料，在基于遥感影像专题信息提取和GIS空间叠置分析技术的基础上时连云港市1978～2005年的城市扩展厦其侵占周围土地的情况进行了系统的分析，并对连云港市扩展的驱动力进行了初步的探讨。结果表明，连云港的城市扩展很快，2005年的城市面积是1978年的4倍多，而且在不同的空间位置城市扩展的速度和规模也有较大的差异，城市扩展主要是侵占周边的优质农田。连云港市临海的地理位置和快速的经济发展决定着城市扩展的空间方位和速度，是城市扩展的主要驱动力。

The study on the urban expansion and proportion of the land use type occupied by the ttrban in the period of 27 years. from 1978 - 2005 in Lianyungang city was carried out with the remote seining thematic information extraction and spatial overlay techniques hosed on the multi-temporal remote sensing data,social and economic data and other assistant information. Moreover, the driving forces of the urban expansion in Lianyungang city was also analyzed. The result revealed that the speed of urban expansion in Lianyungang city was very quick. The ttrban area in 2005 was more than 4 times of that in 1978. The growth in different districts was obviously diversified. The amble land mound the urban was the main occupied land use type due to the ttrban expansion. The result also showed that the main driving forces of urban expansion included the environment of approaching to the Yellow Sea and the highspeed economic development of Lianyungang city.