Decoupling economic growth from CO₂ emissions: A decomposition analysis of China's household energy consumption

This paper analyzes Chinese household CO₂ emissions in 1994–2012 based on the Logarithmic Mean Divisia Index (LMDI) structure decomposition model, and discusses the relationship between household CO₂ emissions and economic growth based on a decoupling indicator. The results show that in 1994–2012, household CO₂ emissions grew in general and displayed an accelerated growth trend during the early 21st century. Economic growth leading to an increase in energy consumption is the main driving factor of CO₂ emission growth (an increase of 1.078 Gt CO₂) with cumulative contribution rate of 55.92%, while the decline in energy intensity is the main cause of CO₂ emission growth inhibition (0.723 Gt CO₂ emission reduction) with cumulative contribution rate of 38.27%. Meanwhile, household CO₂ emissions are in a weak state of decoupling in general. The change in CO₂ emissions caused by population and economic growth shows a weak decoupling and expansive decoupling state, respectively. The CO₂ emission change caused by energy intensity is in a state of strong decoupling, and the change caused by energy consumption structure fluctuates between a weak and a strong decoupling state.