收入差距促进了环境污染吗?——基于省级面板数据的实证检验

Does the Income Gap Promote Environmental Pollution? An Empirical Test Based on Provincial Panel Data

中国的粗放式增长带来了收入差距与环境污染的不断恶化,两者治理目标的协调需要理清其内在联系。利用甲肝发病率和人口结构作为收入差距的复合工具变量验证了收入差距和环境污染之间的内在联系。研究发现:收入差距对环境污染有着显著的正向刺激,在使用了工具变量之后,其显著性和影响程度进一步加强;能源消耗起部分中介作用,收入差距通过能源消耗这一中间机制来影响环境污染;所有制结构起到了前半路径的调节作用,所有制结构抑制了收入差距对环境污染的刺激作用。

The extensive growth of China has brought about the growing income gap and the deterioration of environmental pollution,and the coordination of the two governance objectives needs us to clarify their internal relations.The paper uses the incidence hepatitis A and population structure as composite instrumental variables to verify the internal relationships between income gap and environmental pollution.Research finds out that income gap has a significant positive stimulus to environmental pollution,and the significance and impact are intensified after the use of instrumental variables;energy consumption plays a partial mediation role,through which income gap influences environmental pollution;ownership structure plays a regulatory role of the first half of the path,and the ownership structure inhibits the stimulating effect of the income gap on environmental pollution.