School of Applied Economics, Renmin University of China, Beijing, 100872, China.
School of Economic and Management, Wuhan University, Wuhan, 430072, China.
Environ Sci Pollut Res Int. 2020 Jul;27(19):23550-23564. doi: 10.1007/s11356-020-08490-0. Epub 2020 Apr 15.
To figure out which factor contributes more on carbon emissions caused by energy consumption, this research took multisector analysis based on the Log-Mean Divisia Index Method (LMDI) and decoupling theory to assess the driving factors of carbon dioxide (CO) emissions in China's six sectors from 2003 to 2016. Our empirical results reveal that China's economy can be divided as three decoupling stages and exhibited a distinct tendency toward strong decoupling with a turning point in 2008. Thus, we discuss the impact of 2008 economic crisis on carbon emissions based on decomposition results. The empirical results of our study show the following five conclusions. (1) Most sectors in China are in weak decoupling state due to the inhibition of energy intensity on carbon emissions. (2) Different factors contribute differently to reducing emissions in different sectors, economic output has the most prominent effect, followed by energy intensity and population scale. (3) China's current carbon emission reduction measures benefit more on energy efficiency. (4) The economic crisis has greatly reduced energy efficiency and has no significant impact on other factors. (5) If all industries adjust their energy mix, carbon emissions in China can be reduced by almost 17% every year.
为了弄清楚能源消费导致碳排放的主要因素,本研究采用对数平均迪氏指数法(LMDI)和脱钩理论进行多部门分析,以评估 2003 年至 2016 年中国六个部门二氧化碳(CO)排放的驱动因素。我们的实证结果表明,中国经济可分为三个脱钩阶段,并于 2008 年出现明显的强脱钩趋势。因此,我们根据分解结果讨论了 2008 年经济危机对碳排放的影响。本研究的实证结果得出以下五个结论。(1)由于能源强度对碳排放的抑制作用,中国大多数部门处于弱脱钩状态。(2)不同因素对不同部门减排的贡献不同,经济产出的影响最为显著,其次是能源强度和人口规模。(3)中国目前的减排措施有利于提高能源效率。(4)经济危机极大地降低了能源效率,对其他因素没有显著影响。(5)如果所有行业都调整其能源组合,中国的碳排放每年可减少近 17%。