School of Management Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
Research Institute of Climatic and Environmental Governance, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
Environ Sci Pollut Res Int. 2019 Sep;26(25):25467-25475. doi: 10.1007/s11356-019-05749-z. Epub 2019 Jul 1.
This paper conducts a convergence analysis on the energy-environmental efficiency to explore the differences between regions that reflect the implementation effect of the policies on energy-saving and emission reduction. Particularly, for the Yangtze River urban agglomeration, additive model (AM model) is applied to calculate the energy-environmental efficiency, and the convergence model is employed to analyze the heterogeneity and spatial evolution of energy-environmental efficiency. From the results, the energy-environmental efficiency for Suzhou is at a good level; the figures for Wuxi, Yangzhou, and Nantong maintain at medium level; for Zhenjiang, qualified level; and for Nanjing, Changzhou, and Taizhou, poor level. The energy-environmental efficiency of the whole Yangtze River urban agglomeration displays a downward trend of fluctuations. While Nantong reveals a divergent energy-environmental efficiency, Zhenjiang, Changzhou, Wuxi, Yangzhou, and Nanjing Cities generally show a trend of convergence. It was also recognized that the energy-environmental efficiency is gradually decreasing from Southeast to North to Southwest regions. In the past decade, the north region of Yangtze River yielded a divergent development trend, while the southeast and southwest regions appear to have a convergent development trend. In the future, the urban agglomeration needs to promote the coordinated development of the economy and the energy environment, impel the optimization and upgrading of the industrial structure, narrow the regional gap, and adjust the energy consumption habits.
本文对能源环境效率进行收敛分析，以探讨反映节能减排政策实施效果的地区差异。特别是对于长江城市群，采用加法模型（AM 模型）计算能源环境效率，并采用收敛模型分析能源环境效率的异质性和空间演变。结果表明，苏州的能源环境效率处于良好水平；无锡、扬州和南通的数值保持在中等水平；镇江处于合格水平；而南京、常州和泰州则处于较差水平。整个长江城市群的能源环境效率呈现波动下降的趋势。南通的能源环境效率呈现发散态势，而镇江、常州、无锡、扬州和南京则呈现出收敛的趋势。同时，还发现能源环境效率从东南向西北再向西南逐渐降低。在过去十年中，长江北部地区呈现出发散式的发展趋势，而东南部和西南部地区则呈现出收敛式的发展趋势。未来，城市群需要促进经济与能源环境的协调发展，推动产业结构优化升级，缩小区域差距，调整能源消费习惯。
