重庆城区城市化用地扩张的时空特征

Qing-yuan Yang, Chunyang Lu, F. Wen, Peng-fei Zhang, B. Zang
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引用次数: 1

摘要

基于土地利用图和城市规划图,提取了重庆市1995年、2000年和2008年的城市用地信息。利用GIS软件和统计分析模型,采用扩展速度、扩展强度、扩展方向、扩展形态、景观特征等指标进行研究。本文分析了城市土地扩张的时空特征。结果表明:(1)1995年以来,城市用地扩张速度和扩张强度明显加快,但城市用地扩张表现出明显的差异和空间异质性;(2)受地形和政策因素影响,重庆市城市用地扩张呈现东北—西南轴向格局。(3)城市用地紧凑度低,空间形态不规则,异质性明显。④在城市用地扩张过程中,土地利用功能集中化趋势增强。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spatio-temperal characteristics of urbanization land expansion in Chongqing urban area
Based on land use and urban plan maps, we extraced urban land information of Chongqing urban area in periods of 1995,2000.2008. With the help of GIS softwares and statistical analysis model, such indexes as expansion speed, expansion intensity, expansion direction, expansion morphological, and landscape features were used. This paper analyzed the spatio-temporal characteristics of urban land expansion. The results are drawn as follows: (1) Since 1995, the expansion speed and expansion intensity of urban land accelerate obviously, but urban land expansion show significant disparities and spatial heterogeneity. (2) By topography and policy factors, Chongqing urban land expansion showed the northeast - southwest axial pattern. (3) Compact ratio of urban land is low, space form is irregular, and the heterogeneity is apparent. (4) During the urban land expansion, the trend of function centralization of land use become stronger.
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