Based on the carbon emission inventory of Chinese cities,this paper uses the visualization method to de-scribe the temporal and spatial characteristics of the carbon e-mission intensity(CEI)in resource-based cities.Additional-ly,this paper employs the Bi-Dimensional Decomposition of the Variation Coefficient and QAP methods to comprehensively investigate the bi-dimensional structure and driving factors of regional differences in CEI.The results show that:Firstly,the CEI of resource-based cities significantly declined,exhibiting a"cumulative effect"of CEI reduction.Among them,the CEI of declining cities ranks first,but its reduction is significantly high-er than that of other cities.The CEI of growing,mature and re-generating cities decreases in turn.Secondly,the CEI of re-source-based cities exhibited significant spatial heterogeneity,which evolved dynamically over time.From the regional perspec-tive,intra-regional differences were the main source of spatial differences in CEI of resource-based cities.From the carbon source perspective,the spatial differences of industrial CEI were the main driving force behind the overall differences and chan-ging trends.From the bi-dimensional structure of regions and carbon sources,intra-regional differences of industrial CEI in growing and mature cities have gradually become the most signif-icant contributor to overall differences.Finally,the positive effects of differences in industrial structure,environmental regu-lation,financial development,and land urbanization on CEI differences decreased sequentially.Moreover,the contribution and impact of each driving factor on CEI differences exhibited regional heterogeneity.
spatial differencesresource-based cit-iescarbon emission intensityBi-Dimensional Decomposition of the Variation CoefficientQAP