基于GIS的济南市城区扩展遥感动态监测

GIS and remote sensing supported study on dynamic monitoring the urban extension of Jinan City

利用TM/ETM+影像,采用分类后对比法对济南市城区变化进行动态监测,在数量和空间上分析了1977～2001年济南市城区的变化;在3个时间段内,1996～2001年间城区年均增长面积最大,主要扩展方向为正东、东北、正西、西南和南部方向,但城区的整体扩展速率有所降低;通过缓冲区分析发现,济南市城区扩展趋势是以城区中心为原点,呈现同心圆式的外延扩展模式.

Based on GIS and remote sensing, monitoring of Jinan City dynamic extension was conducted by using the post classification comparison. As the same time, the quantitative and qualitative characteristics of dynamic development was analyzed in this paper. It was found that in the period during 1996~2001, the annual increase area is more than any other period. But the general ratio of urban sprawl tends to decline. Separated by the Yellow River in the North, the main urban expansion direction are East, East-North, West,South and West-South.. And by buffer analysis, we found that the urban expansion pattern in Jinan is concentric circles.