二元经济结构下城乡居民收入差距与用电量差距的关联关系研究

在二元经济结构条件下,城乡公共服务差距是影响城乡居民收入差距的因素之一。本文选取城乡居民收入差距、生活用电量差距与反映二元经济结构特征的二元对比系数和二元反差指数四个变量,基于我国1986—2011年的数据和VAR模型,揭示了二元经济结构下城乡居民收入差距与生活用电量差距之间的关系。实证研究结果表明,四个变量间存在长期均衡关系;收入差距与生活用电量差距存在双向的Granger因果关系;生活用电量差距的缩小可抑制收入差距的扩大,且这种抑制作用具有滞后性。最后提出我国在制定电力普遍服务政策的目标与实施标准时,应将缩小城乡收入差距这一社会目标考虑在内。

An Empirical Study of the Relationship Between Residential Electricity Consumption Gap and Income Gap of Urban and Rural Residents Under the Dual Economic Structure

Under the dual economic structure, the public services gap between urban and rural is one of the factors affecting the urban-rural income gap, as a basis energy industry of national economy, the electric power is within the scope of public services, but there is still a certain amount of people without electricity, electricity consumption gap between urban and rural residents. This paper selected four variables including the income gap, electricity consumption gap of urban-rural residents, dual contrast index and dual inverse index which reflect the dual structure, used 1986- 2011 annual data and VAR model, revealed the relationship of the income gap and electricity consumption gap of urban-rural residents under the dual economic structure. The empirical results show that there is a long-term equilibrium relationship between the four variables; a two-way Granger causality exists between residential electricity consumption gap and the income gap; residential electricity consumption gap lags suppression effect on the income gap. Finally, this paper proposed that when developing electric power universal service objectives and implementation standards, we should take reducing the urban-rural income gap into account as a social goal.