中国能源强度收敛性的理论与实证分析

Energy intensity convergence theory and empirical analysis inChina

摘要:

本文首先结合了内生增长模型，从理论上证明了能源强度收敛性的存在，其次，采用我国2000年至2012年相关数据，基于不同收敛模型的设定—σ收敛和β收敛模型，以及不同的估计方法—系统GMM和工具变量法，实证研究了全国和高收入组、中收入组以及低收入组的能源强度收敛情况，得到如下结论：（1）从全国层面来看，我国能源强度存在σ收敛和β收敛；（2）从不同收入层面来看，高收入组、中收入组以及低收入组分别存在σ收敛和β收敛；（3）人均GDP、城市化水平、研发强度、能源价格是影响能源强度收敛的重要因素。

Abstract:

This paper combines the endogenous growth model, and theoretically proved the existence of energy intensity convergence firstly. Secondly ,using the relevant data from 2000 to 2012. based on the different convergence model settings-sigma convergence and beta convergence model, and different estimation method-the system GMM and instrumental variable method, empirical research the energy intensity convergence of the national level and high-income group, middle-income group and low-income group. The empirical results show that: (1) our country energy intensity existing sigma convergence and beta convergence . (2) high income group, the income of the low-income group group, respectively in Sigma convergence and Beta convergence at different income levels. (3) per capita GDP, urbanization level, research and development strength and energy prices are the main factors of influence energy intensity.