1990～2010年榆次区城市扩张与驱动力分析

Analysis of Driving Forces behind Urban Expansion in Yuci from 1990 to 2010

城市空间格局的演变可以明确反映城市化的过程。以Landsat TM和ETM+为数据依托,采用GIS的空间分析功能,从空间扩张视角分析榆次区城市扩张过程,进而讨论影响城市发展的驱动因素。结果表明:榆次区城市为外向型扩张,主要向北部和西部方向扩张,且1990至2000年城市扩张的速度低于2000至2010年。地理位置和政策导向对榆次区城市扩张作用显著。研究结果可为研究榆次区规划发展及中心城区用地布局提供必要的数据支撑。

Evolution of urban spatial structure can clearly reflect the process of urbanization.In this paper,based on Landsat TM and ETM＋,the procession of urban expansion in Yuci was analyzed from spatial expansion aspect by GIS spatial analysis.Furthermore,the driving factors behind urban development were discussed.The results showed that the type of expansion in Yuci city was outward expansion and the main directions were to north and west.The rapid expansion from 1990 to 2000 was slower than from 2000 to 2010.The location and policy played the key role in urban expansion in Yuci city.Therefore,the results can provide support for researching the development of regional plan and the overall arrangement in center district.