农村居民消费不平等的微观结构分析

An Analysis on Decomposition of Consumer Expenditure Inequality in Rural Population

提出了个体微观数据基尼系数的组群、要素统一分解式,并利用该分解式考察消费结构、区域结构和收入不平等对农村居民消费不平等的影响。采用了2009年福建省农村居民生活状况调查数据进行分析,得出结论:食品、衣着类消费的增长可以降低农村居民的消费不平等,其中谷物、薯类、食用油、蔬菜及制品、肉禽蛋奶及制品的消费增长对消费公平性的提高产生积极的作用;组内不平等在总体消费不平等中占80%以上,消费差异主要表现为内部的差异;农村居民的消费不平等受收入不平等影响显著。

A unite formula is promoted on decompositions of the Gini Coefficient by factor components and population subgroups using individuals or households data,then the method is applied to analysis the effects on consumer expenditures from both consumption structure and region structure in rural population.Using data from the 2009 Fujian rural consumer expenditure interview survey,the results are follows： First,that the rural consumers spend more on food and clothing will improve their consumption expenditure inequality,while grain,starches and tubers,oil and fats,vegetables,meat,eggs,milk and processed products will be encouraged;Second,the inner inequity is more than 80% in the overall inequality,so it is the main reason that causes rural consumer expenditure difference;Third,income inequality has a remarkable effect on consumption inequality for rural consumers.