基于DEA-BCC模型的湖南省煤炭利用生态效率评价

本文运用DEA-BCC模型对2004~2015年湖南省煤炭利用生态效率进行综合评价,并对湖南省煤炭利用生态效率进行优化设计。结果显示:2004~2015年湖南省煤炭利用的生态效率仅有2004年、2013年、2015年3年实现生态效率DEA相对有效;在生态效率无效的9个年份中,2012年实现纯技术效率有效,但规模效率无效,其余8个年份的纯技术效率和规模效率均无效,且规模报酬递减;除了2008年、2012年、2014年,其他生态效率无效年份的规模效率都略低于其纯技术效率;湖南省煤炭生态利用的优化主要集中于2005~2011年的煤炭消费量投入指标和工业SO2排放量(燃料燃烧)、工业烟(粉)尘排放量、2004年基期区域不变价GDP等3项产出指标。针对湖南省煤炭利用绿色化发展的状况和实际存在的问题,提出湖南省煤炭利用生态效率提升对策建议,即建立绿色消费制度,树立煤炭绿色消费观念,推进煤炭绿色化技术创新,大力发展循环经济。

The ecological efficiency assessment of coal use in Hunan province based on DEA-BCC model

Using the DEA-BCC model we comprehensively evaluated the ecological efficiency of coal use in Hunan province from 2004 to 2015, and which is optimized designed. The results show that only in 2004, 2013 and 2015 the ecological efficiency of coal use in Hunan Province is effective. In the integrated inefficiency nine years, the pure technical efficiency is effective in 2012, but the scale efficiency is ineffective. For the other eight years the pure technical efficiency and scale efficiency are both ineffective, and the scale returns are decreasing. Except 2008, 2012 and 2014, for the integrated inefficiency year the scale efficiency is lower than the pure technical efficiency. The ecological coal use optimizing in Hunan province mainly focus on input index of coal consumption and three output indexes of industrial SO2 emission (fuel combustion), industrial dust emission and constant-price GDP from 2005 to 2011. For the situation of coal use green development and the actual problems we put forward the countermeasures to improve the ecological efficiency of coal use in Hunan province. Set up a green consumption system and the concept of coal green consumption. Promote the innovation of coal green technologies, and vigorously develop the circular economy.