中文摘要：

借助于地理信息系统（GIS）和遥感技术（RS）,本文探讨了重庆市北碚区城市用地的扩张趋势及其主要驱动因素;分析了1972年-2006年北碚区城市用地扩张的时空格局;讨论了其1995年-2006年间城市用地扩张中土地利用/覆被变化的特点。主要结果如下：①在时间尺度上,北碚区城市用地扩张分为慢、快和剧烈3个阶段,城市用地快速增长的区域分布在城区西南和正南方,城市重心最初向南方迁移后,逐渐向西南方转移;②北碚城市用地扩张的空间格局可分3类：自然增长型、社会-政治事件影响型和经济-人口影响型;③1995年-2006年来,北碚城区土地利用/覆被变化明显,各类型间相互转化关系暗示了这些变化主要受控于城市用地的扩张;④北碚区城市用地扩张受到山脉、河流2种自然因素影响最大,这也是大都市卫星城镇发展的一个普遍规律。同时,经济因素、政策因素、交通条件和城市人口数是北碚城市用地扩张主要的人为驱动因素。

英文摘要：

Beibei District is one of cities in the coastal zonal areas of Chongqing Municipality, showing the fastest urban land expansion. Rapid urban land expansion, especially occurring since the 2000s, has resulted in change in the economic structure over there. With the significant economic shift, the area of urban land use has also increased. Its developmental characteristics and land use change are typical in satellite towns of metropolis in southwestern China. Most of satellite towns of metropolis have experienced the same political, economic, and technical reforms and advancements. This paper presents an integrated study of urbanization trends in Beibei using geographical information systems （GIS） and remote sensing. Remote sensing provides spatially consistent data sets that can cover large areas with both high spatial and temporal resolutions. These advantages are unique in detecting spatial and temporal dynamics of processes in urban growth and land use change. Integration of remotely sensed data and global positioning system （GPS） with GIS has been a trend in comprehensive assessment of land cover change in a more effective and efficient way. It has been proved useful in mapping urban areas and analysis and modeling of urban growth and land use change. Based on integrated analysis of GIS and remote sensing, we unraveled a trend in urban land use expansion and suggested the primary driving forces of this trend in Beibei, a satellite city of Chongqing. Spatial and temporal variations in urban land use expansion through 1972 to 2006 corresponded to land use/land cover change （LUCC）. Characteristics of LUCC in Beibei are： 1） temporally, the urban land use expansion can be generally classified into three stages, i.e., slow, fast, and dramatic expansion. The fast and dramatic expansion was clearly observed in southwestern part of the city. The downtown of the urban area shifted from the south and the southwest; 2） three types of spatial pattern of urban growth in Beibei include normal urban growth,