基于非合意产出DEA模型的长三角产业能源效率及影响因素研究

On Energy Efficiency and Influencing Factors of Industry in Yangtze River Delta Based on DEA Model with Unconforming Output

运用包含非合意产出的双产出DEA模型,对长江三角洲城市群2003~2014年能源效率变化进行测算,并对能源效率影响因素进行实证研究。结果显示,上海市能源效率近10年来一直稳定在较高水平,浙江省与江苏省能源效率略低于上海市并在金融冲击的影响下出现较为相似的波动。在17个地级市中,杭州、南京、无锡三市能源效率较高,而南通市能源效率则明显低于其他城市。在影响因素方面,产业结构、技术进步、工业化水平、能源价格对长三角能源效率均存在较显著的影响,但各地区影响程度存在差异。

A two-output DEA model with unqualified outputs is used to calculate the energy efficiency change of the Yangtze River Delta from 2003 to 2014,and to make an empirical study on the factors affecting energy efficiency.The results show that Shanghai's energy efficiency has been stable at a relatively high level over the past decade.The energy efficiency of Zhejiang and Jiangsu is slightly lower than that of Shanghai which is fluctuated under the impact of financial shocks.In the 17 cities,Hangzhou,Nanjing and Wuxi have higher energy efficiency,while the energy efficiency of Nantong is significantly lower than other cities.In terms of influencing factors,industrial structure,technological progress,industrialization level and energy price all have obvious influences on the energy efficiency of the Yangtze River Delta,but the degree of influences are different.