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Changes in carbon intensity in China's industrial sector: Decomposition and attribution analysis

机译：中国工业部门碳强度的变化：分解与归因分析

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The industrial sector accounts for 70% of the total energy-related CO2 emissions in China. To gain a better understanding of the changes in carbon intensity in China's industrial sector, this study first utilized logarithmic mean Divisia index (LMDI) decomposition analysis to disentangle the carbon intensity into three influencing factors, including the emission coefficient effect, the energy intensity effect, and the structure effect. Then, the analysis was furthered to explore the contributions of individual industrial sub-sectors to each factor by using an extension of the decomposition method proposed in Choi and Ang (2012). The results indicate that from 1996 to 2012, the energy intensity effect was the dominant factor in reducing carbon intensity, of which chemicals, iron and steel, metal and machinery, and cement and ceramics were the most representative sub-sectors. The structure effect did not show a strong impact on carbon intensity. The emission coefficient effect gradually increased the carbon intensity, mainly due to the expansion of electricity consumption, particularly in the metal and machinery and chemicals subsectors. The findings suggest that differentiated policies and measures should be considered for various industrial sub-sectors to maximize the energy efficiency potential. Moreover, readjusting the industrial structure and promoting clean and renewable energy is also urgently required to further reduce carbon intensity in China's industrial sector. (C) 2015 Elsevier Ltd. All rights reserved.
机译：工业部门占中国与能源有关的二氧化碳排放总量的70％。为了更好地了解中国工业部门的碳强度变化，本研究首先利用对数平均Divisia指数（LMDI）分解分析将碳强度分解为三个影响因素，包括排放系数效应，能量强度效应，和结构效果。然后，通过使用Choi and Ang（2012）提出的分解方法的扩展，进一步分析以探索各个工业子行业对每个因素的贡献。结果表明，从1996年到2012年，能源强度效应是降低碳强度的主要因素，其中化学，钢铁，金属和机械以及水泥和陶瓷是最具代表性的子行业。结构效应并未显示出对碳强度的强烈影响。排放系数效应逐渐增加了碳强度，这主要是由于电力消耗的扩大，特别是在金属，机械和化学子行业中。研究结果表明，应针对各个工业子行业考虑差异化的政策和措施，以最大程度地提高能效潜力。此外，迫切需要调整产业结构，促进清洁和可再生能源的使用，以进一步降低中国工业部门的碳强度。 （C）2015 Elsevier Ltd.保留所有权利。

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