Research on the Measurement of China's Interregional Carbon Linkage based on MRIO Model

China as the world's largest CO2 emitter has thus far been undergoing acute pressure of carbon mitigation. To achieve emission-reduction targets set by the government, it's necessary to analyze inter-regional carbon linkage of China, and thus to develop differentiation strategies to reduce carbon emissions. By building the Multi-Regional Input-Output(MRIO)Model and using China's regional input-output table 2007, this study investigates the inter-regional carbon linkage of China from the perspective of inner-regional carbon emission multiplier effect, inter-regional carbon emission spillover and feedback effects, by dividing China into three regions, namely East, Central and West. Results show that the inner-regional carbon emissions multiplier effect of the East region is significantly weaker than that of the Central and West regions; the inter-regional carbon emissions spillover effect of the East and West regions on the Central region is much stronger than that of the Central and West regions on the East region; the inter-regional carbon emissions feedback effect is very small and so is the regional gap; the total effects of energy-intensive sector far exceeds that of the rest of sectors. The policy implications on China's carbon-mitigation issue from both regional and sector levels are also discussed finally.