技术差异视角下中国交通运输业环境效率研究

合理评价交通运输业的环境效率关系到其绿色低碳的可持续发展，具有重要的意义.本文采用非期望产出的数据包络分析法来评价中国各地区交通运输业的环境效率；并结合Meta-frontier Malmquist指数分析法，在区域技术差异视角下分析其在 2007-2016年环境效率的动态变化情况.研究结果表明：中国交通运输业的环境效率在整体上呈缓慢增长的态势，且仍具有较大的改进空间；同时，由于区域技术差异性的影响，中国东部、中部和西部的交通运输业在环境效率上表现出不同的优势与不足.在此基础上，本文给出了相应地政策建议，帮助各地区有针对性地改善交通运输业的环境效率.

Environmental Efficiency of China's Transportation Industry from the Perspective of Technological Differences

It is of great significance to reasonably evaluate the environmental efficiency of the transportation industry, because it is related to the transportation industry's sustainable development of green and low-carbon. Based on data envelopment analysis with undesirable outputs, the environmental efficiency of China' s regional transportation industry is evaluated; and combining with Meta-frontier Malmquist index analysis, the dynamic changes in its environmental efficiency during 2007-2016 is analyzed from the perspective of regional technical differences. The results show that the environmental efficiency of China's transportation industry is growing slowly on the whole, and there is still much room for improvement. Meanwhile, due to the influence of regional technological differences, the transportation industries in the eastern, central and western areas of China have different advantages and disadvantages in terms of environmental efficiency. On this basis, the corresponding policy suggestions are proposed in this paper to help all regions improve their environmental efficiency of transportation industry.