摘要
利用Auto-CAD、GIS技术对嘉峪关市1998年、2003年和2008年3个时段的城市土地利用变化进行空间分析,以城市土地扩展强度指标来表征城市空间扩展强度及其空间差异,应用凸壳原理以内部填充率来刻画城市空间扩展类型,从城市空间总体扩展与内部功能区扩展两方面定量分析近10年来嘉峪关城市空间扩展的规律与特征。最后,从社会经济因素、政策因素和规划引导3方面探讨其城市空间扩展的动力机制。
Based on Auto-CAD and geographical information system （GIS）, the urban spatial expansion of Jiayuguan City was studied according to Jiayuguan City＇s land-use maps in 1998, 2003 and 2008. In order to reveal the rules and characteristics in Jiayuguan City spatial expansion in recent 10 years, the expansion intensity and spatial differentiation was analyzed by the expansion intensity index and the the principles of convex hull were applied to characterize the type of expansion by the infilling rate from the expansion of overall city and internal organizing groups. Finally, the spatial expansion dynamic mechanism of Jiayuguan City was discussed.
出处
《安徽农业科学》
CAS
北大核心
2010年第33期18965-18969,18975,共6页
Journal of Anhui Agricultural Sciences
关键词
城市空间扩展
扩展强度及类型
扩张机制
嘉峪关市
Urban spatial expansion
Intensity and type of expansion
Expansion mechanism
Jiayuguan City
