特大型山地城市动态扩展的遥感研究

以2000年、2003年的SPOT图像和2006年的中巴资源卫星（CBERS-1）图像为主要数据源,在运用RS及GIS技术对遥感图像进行一系列预处理的基础上,提取不同时期重庆主城核心区的建成区面积,同时分析城市扩展的速度和空间差异。结果表明,2000~2006年建成区的面积增长了114.14 km2,年增长率为10.48%。城区扩展的主要方位是正北和东北方向,占到总增长面积的60%左右。农用地为扩展用地的主要地类来源。经济发展、政策与规划、自然地理环境、交通基础设施等合力作用是城市空间格局演变的主要驱动力。

Research on Dynamic Expansion of the Large Mountainous-City Based on Remote Sensing

Images of SPOT in 2000, 2003 and CBERS-1 in 2006 as the data sources, have been used for this study. Based on a series of image pre-processing by using the technology of RS and GIS, urban built-up area of the central of Chongqing city was extracted, as well as the speed and the spatial-temporal features of urban expansion was analyzed.The results obtained show that,urban built-up area have increased 111.14 km2, 10.48% of the annual growth rate during the 2000~2006 period. The north and northeast direction were the leading orientation of urban expansion, accounted for 60% of the total expansion area.The erosion of arable land is most prominent.The built-up area expansion and the spatial-temporal features were mainly attributed to the economic development, the proper policies of local governments and the urban planning, natural and geographical environment, as well as the development of traffic infrastructure.