近20年来山东省城市异速生长分析

Analysis of the urban allometric equations of Shandong Province during the past 20 years

应用异速生长方程并结合城市人口密度分析方法,对1990年以来山东省城市人口和城市建成区面积的异速生长关系进行了研究。结果表明,1990-2005年间,标度指数b值总体趋向减小,说明山东省大城市相对于中小城市土地利用集约程度不断提高;2006-2010年间,b值总体趋向增大,说明大中小城市的土地利用集约程度趋同。同时,在标度指数b值固定的情况下,比例系数a不断增大,表明1990年以来山东省城市用地的扩张快于城市人口的增长,并且城市用地扩张呈加速的趋势。此外,指出异速生长分析结果与城市人口密度、集中指数和不平衡指数分析结果基本一致,并在此基础上提出了关于山东省城市发展的政策建议。

By the methodologies of allometric equation and urban population density analysis, this article analyzes the relation between urban population and urban built - up area in Shandong Province since 1990. The results are shown as follow： During the 15 years from 1990 to 2005, the scaling exponent b tended to decrease overall, indicating that the intensive degree of metropolis land use constantly improves in urban system of Shan- dong Province. While during the 4 years from 2006 to 2010, the scaling exponent b tended to increase overall, manifesting that the intensive degree of medium small cities land use in Shandong Province converges. As the scaling exponent b is set by a fixed value, the proportion coefficient of allometric equation keeps in- creasing. That indicates that the urban land expansion of Shan- dong Province is quicker than the urban population growth. What is more, the analysis result of urban population density,concentration index and unbalance index are the same as allo- metric analysis. Finally, some policy suggestions about the ur- ban development of Shandong Province are proposed based on this research.