This paper calculates the hybrid energy in 30 provincial-level region of China from the perspective of water-energy-food coupling.Based on the methods of input-output analysis,social network analysis,closeness centrality and coupling coordination degree,this paper predicts and analyzes carbon emissions,carbon peak time and carbon reduction contributions of 4 representative provinces under different scenarios applying the long-term energy substitution planning system.The results show that:1)The provinces with barely coordinated development show a trend of high coupling and low development,the energy subsystem evaluation index of the provinces with primary and intermediate coordinated development is relatively low.2)In the hybrid energy network,the functions and roles played by provinces are affected by economic,geographical and resource endowment differences,showing certain geographical distribution characteristics.3)According to the classification results,all types of provincial-level regions are expected to achieve carbon peak ahead of schedule,and have different emphasis on carbon emission reduction measures.There is a common problem in different types of provinces,that is,the contribution of clean energy substitution and electric power acceleration is low.Based on the above,it should formulate different carbon emission reduction strategies according to the actual situation of different provincial-level regions.
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