【摘要】 以GIS为软件平台,基于3个时期(1987年、2000年、2009年)的遥感影像和5个年代的历史地图,利用扩展强度指数、放射状指数和空间重心转移模型等方法,计算1912～2009年呼和浩特市区城市空间形态参数,在时间和空间上定量分析呼和浩特市近百年来城市扩展时空特征、城市形状演化特征和空间重心转移特征,进而研究呼和浩特市的城市形态演化过程及其特征.研究结果表明,1912～1948年呼和浩特市区从西南到西北方向缓慢发展,城市形状由"正方形"趋向星形;1948～1973年,随着城市化进程的发展,市区一直向东北快速发展,城市形状从星形向圆形演化;1973～1987年,市区空间向西南方向加速发展;1987～2000年,城市空间向东北逐渐发展;1973～2000年,城市形状在圆形和矩形之间浮动,变化相对稳定;2000～2009年,城市建设再次进入快速扩展期,市区向东南方向扩展,城市形状趋于矩形.更多还原

【Abstract】 The purpose of this study was to evaluate the spatial-temporal characteristic of urban form of Hohhot from 1912 to 2009,based on three remotely sensed images and five historical maps.The process and characteristics of urban expansion and urban spatial morphology are analyzed using expand intensity index,compactness index and spatial center of gravity transfer model based on spatial morphologic measurement coupled with land use change monitoring.The results showed that the city was developed slowly from southwest to northwest and it’s spatial form was changed from "square" to "radical" during 1912-1948;the city was expended to northeast quickly and it’s spatial form changed from "radical" to "square" during 1948-1973 with the development of urbanization process;the city was developed quickly to southwest during 1973-1987;the city was expanded gradually to northeast during 1987-2000;with the rapid expansion of the city construction,the city was developed to southeast and it’s spatial morphology tends to "rectangle" during 2000-2009.更多还原