北京大学学报（自然科学版）2019，Vol.55Issue(6)：1097-1102,6.DOI:10.13209/j.0479-8023.2019.107
空间和规模分布差异的组间不均衡指数
Inequality Indexes for Measuring Between-Groups Mean Difference of Size and Spatial Distributions
摘要
Abstract
A set of new inequality indexes are constructed to measure the relative unbalanced difference between regions or groups of elements in a geographical systems.Firstly,the within-group inequality index,namely,the Gini coefficient based on the Lorenz curve,is transformed into a new mathematical expression.Then,based on the new formula,the within-group index is generalized to between-group inequality index.Technically,the two types of inequality indexes can be integrated into the same logic framework.As an example,the new formulae are applied to three systems of cities in China,including Beijing-Tianjin-Hebei region,Yangtze River Delta,and Pearl River Delta.The results display a spatio-temporal evolution patterns of relative mean differences within and between these urban systems.关键词
Gini系数/不均衡指数/京津冀/长江三角洲/珠江三角洲/城市体系Key words
Gini coefficient/inequality index/Beijing-Tianjin-Hebei/Yangtze River Delta/Pearl River Delta/urban system引用本文复制引用
陈彦光..空间和规模分布差异的组间不均衡指数[J].北京大学学报（自然科学版）,2019,55(6):1097-1102,6.基金项目
国家自然科学基金(41590843,41671167)资助 （41590843,41671167）
