With a case study of Jiangsu Province, the differential technique was adopted to explore the Gini coefficient and analyze the evolution of income gap between urban and rural residents. By means of the concentration rate and contribution rate, the Gini coefficient was decomposed into each subentry income to analyze the balanced degree between different sources of income and their influence on income gap. The study revealed the causes to the widening gap between urban and rural income and proposed related solutions.%以江苏省为例,采用差值法对基尼系数进行探究,分析城乡居民收入差距的演变轨迹,运用集中率和贡献率将城乡收入差距基尼系数在各分项收入中进行具体分解,分析不同收入来源在城乡收入差距之间分配的均衡程度和对城乡牧入差距的影响程度,从而揭示导致城乡收入差距扩大的原因,并给出相应的对策建议.
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