Abstract
A better understanding of the spatial differences in aggregate carbon intensity (ACI) among cities is useful in achieving differentiated urban mitigation. In this study, we investigated the aggregate embodied carbon intensities and spatial differences in the four municipalities in China during 2007–2017 using an input-output (I–O) model at both the aggregate and final demand category levels. The results indicated that the spatial differences were distinct and gradually increased at both levels. In addition, a spatial structural decomposition analysis was utilized to examine the main factors that contributed to these differences. The energy intensity effect was confirmed as the dominant factor, while the structural effects played an increasingly significant role, particularly the Leontief production structure effect. Finally, policy implications associated with the differentiated CO2 peaking paths were proposed.
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