北京市城市用地百年变迁分析

对城市的空间扩展过程及其时空规律的研究,可正确地把握其在城市化进程中所处的阶段,预测城市发展趋势。本文利用数字化地形图、陆地卫星MSS、TM影像,对民国时期至2005年北京市城市用地的面积变化、扩展过程进行了监测分析,并对北京市中心建成区及周边典型卫星城的动态变化作了重点分析。结果表明:在近百年的时间内,北京市建成区的扩展基本上呈现出以旧城区为中心向四周扩展的方式,并未在某一方向表现出特别明显的变化,但在不同时期内的扩展速度差异非常明显。北京市的道路交通用地发展迅速,周边卫星城的建设有较大的发展。

The Variation of Urban Land Use in Beijing in the Last One Hundred Years

The research about the process of urban spatial expansion and the discussion about spatio-temporal rule of urban expansion could help determine the development stage of urbanization of the city and predict the trend of urban development.Based on digitalized relief map,historical relief map,Landsat MSS images and TM images,the urban area's features of Beijing of last century,especially the change of central built-up area and the typical satellite towns were analyzed.For almost a century,the built-up area was expanded around the old town and did not present extremely visible change in a certain direction.The expansion rate varied in different periods of time and the city of Beijing experienced two fast expansion stages comparatively.The Beijing's road traffic was developing rapidly and the satellite towns around central built-up area also made great progress.