摘要
基于多时相TM影像和GIS空间技术,计算了徐州城市空间形态的分形维数和紧凑度指数,运用象限方位分析和缓冲区分析方法,对研究区城镇建设用地的空间分异特征进行定量分析。结果表明,1983-2013年,徐州城镇建设用地扩展了1.4倍;全市范围内,中心点西南区为建设用地扩展的核心区,而中心城区整体向东南方向移动;城镇扩展强度呈现中心向外围＂圈层式＂扩展趋势。
Based on the satellite images and the spatial statistic and analytic function of GIS, the paper calculated the fractal dimension and compactness of urban spatial form of Xuzhou City, analyzed quantificational the spatial differentiation characteristics of urban construction land expansion by the quadrant and buffer analysis method. The results show that the urban quadrant of Xuzhou City land expanded 1.4 times from 1983 to 2013. In the urban range, the core zone of the construction land expansion is the Southwest. However, to the city center, the expansion gravity moved to the southeast. The urban land expansion intensity shows 'sphere-type' mode form the center to the periphery.
出处
《地理空间信息》
2015年第6期26-29,11,共4页
Geospatial Information
基金
国家自然科学基金资助项目(41201166)
关键词
城市建设用地扩展
城市空间形态
象限分析
缓冲区分析
徐州市
urban construction land expansion
urban spatial form
quadrant azimuth analysis
buffer analysis
Xuzhou City
