Energy Efficiency Analysis of China’s Resource-based Cities under Different Scenarios — Based on the Super-SBM Model
Posted: 15 Jul 2019
Date Written: July 13, 2019
Energy consumption inevitably causes environmental disruption, and it is necessary to incorporate environmental factors into energy efficiency assessments. From an energy-economy-environment perspective, this research employs the super-efficiency slack-based measure (Super-SBM) with undesirable output to assess the total-factor energy efficiency of China's 104 resource-based cities. The efficiency difference is discussed in terms of the urban development and urban-dependent industry, and the results are compared with a scenario that does not consider environmental constraints. Finally, resource-based cities are classified into three categories through K-means clustering technology: high-efficiency region, medium-efficiency region and low-efficiency region. The investigation results show the following: (1) There are differences in the energy efficiencies of resource-based cities under different scenarios, and the efficiency value in scenario two reflects the real energy efficiency better than does that in scenario one. (2) Most resource-based cities are in low-efficiency zones with substantial room for improvement. The efficiency differences among different types of cities are clear and have not changed significantly with time. (3) The development of resource-based cities follows specific life-cycle characteristics. The energy efficiency of growing cities is the highest, followed by those of grow-up cities, recessionary cities, and regenerative cities. (4) There is a strong correlation between the prosperity of resource-based cities and their dominant industries. The ordering of efficiency in terms of the type of resource-based city is as follows: oil and gas-based > multiple minerals-based > non-metallic-based > nonferrous metal-based > coal-based > forestry-based > ferrous metal-based.
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