基于GIS的郑州市城区空间扩展及优化研究

Study on the Space Expansion and Optimization of Zhengzhou City Base on GIS

运用ARCGIS软件,对郑州市建城区地图的数字化,通过叠加分析得出1988到2002年的14年间,建成区面积从73.73km2增加到159.00km2,面积增加了85.27km2,年平均扩展速率为5.64%。郑州市城市空间扩展呈放射状模式,城市扩展方向变化是:城市质心位置经历了先向东南方向偏移,继而又向东的一个过程。

Using ARCGIS software,built in Zhengzhou city on the digital map through the stack analysis, drawn from 1988 to 2002 in 14, built from the urban area of 73.73km2 to 159.00km2. An increase of 85.27km2, the average annual growth rate of 5.64 percent; The Zhengzhou city space expansion assumes the radiated pattern; The Zhengzhou city center of mass position has experienced first to the southeast direction displacement, subsequently to an east process, this is the Zhengzhou city expansion direction change process.