东北地区城市土地经济密度格局演变

The evolution of urban land economic density differences in Northeast China

以中国东北地区34个地级以上城市为研究样本,综合运用基尼系数、泰尔指数和探索性空间数据分析方法,对东北地区城市土地经济密度差异的时空特征进行了定量分析。结果显示:东北地区城市土地经济密度的基尼系数和泰尔指数均呈波动下降态势,区内差异对东北地区城市土地经济密度总体差异的贡献率高于区间差异;东北地区城市土地经济密度表现出显著的全局空间集聚效应,且从LISA集聚图来看,城市土地经济密度的"L-L"区和"H-H"区城市数量都有所增加,分别集中分布在黑龙江省东北部和辽宁省中部。

Taking 34 cities across Northeast China as research subject, this essay employs Gini Coefficient, Theil In- dex and Exploratory Spatial Data Analysis to analyze the spatial and temporal characteristics of urban land economic density in Northeast China. The results indicate that： Firstly, the Gini Co- efficient and Theil Index of urban land economic density in Northeast China shows a trend of reducing, and regional disparities of urban land economic density shows a converge tend. The contribution rate of regional difference to the overall urban land economic density in Northeast China is higher than that of the regional difference. Secondly, the agglomeration effect of urban land economic density is more and more obvious in the sample. From the LISA cluster map, the number of cities in ＂L - L＂ and ＂H- H＂ zones is increased, and the cities located in northeast of Heilongjiang Province and central of Liaoning province respectively.