辽宁省城乡居民收入与GDP 增长的相关性分析

研究了辽宁省1 9 8 0-2 0 1 2年城镇居民人均收入增长指数数据、 农村居民人均收入增长指数数据与 辽宁省GDP 增长指数数据之间的关系, 从整体与局部的角度和相关系数得出了三者之间的关联特征, 并进一步建 立了变量间的向量自回归模型, 通过脉冲响应函数探讨了三者之间的动态联系。研究结果表明, 辽宁省GDP 增长 率与城镇居民人均收入增长率、 农村居民人均收入增长率之间具有密切的相关性, 但变化趋势存在不同步性; 从三 者之间的动态联系来看, 辽宁省GDP 增长率对城镇居民人均收入和农村居民人均收入的增长有明显的促进作用, 而城镇居民人均收入和农村居民人均收入的增长率对GDP 增长率的冲击不大。应采取有效措施, 缩小城乡居民人 均收入差距, 努力实现城乡居民人均收入与GDP 的同步增长。     

Testing the environmental Kuznets curve hypothesis: an empirical study for East African countries

ABSTRACT

The green economy aims to achieve economic growth and development without an adverse effect on the environment. The environmental Kuznets curve (EKC) hypothesis explains the relationship between economic activity and environmental degradation. Using the EKC hypothesis as a theoretical framework, this study tested the EKC hypothesis for 12 East African countries using the Pooled Mean Group (PMG) approach for the period from 1990 to 2013. The result shows that the relationship between per capita income and CO₂ emissions (a proxy for environmental degradation) is bell shaped and thus is an extended version of the original inverted U-shaped curve relationship between economic activities and environmental degradation. Hence, one can conclude that the economic activities in East African countries do not lead to CO₂ emissions. Therefore, environmental conservation policies, technological advancement and modern industrial policies are required to make the economic growth of East African countries effective in reducing CO₂ emissions.