基于三阶段DEA-Malmquist的煤炭利用生态效率测度评价  

Evaluation ofeco-efficiency measurement of coal utilization based on three-stage DEA-Malmquist

作　　者：赵丽霞[1] 张文琪 白倩 Zhao Lixia;Zhang Wenqi;Bai Jing(School of Economics and Management,Inner Mongolia Agricultural University,Hohhot 010010,China)

机构地区：[1]内蒙古农业大学经济管理学院,内蒙古呼和浩特010010

出　　处：《煤炭经济研究》2023年第7期78-86,共9页Coal Economic Research

基　　金：内蒙古自治区教育科学研究“十四五”规划(NGJGH2022142)。

摘　　要：运用三阶段DEA-Malmquist模型,对2011—2019年全国30个省市的煤炭利用生态效率进行静态和动态分析。结果表明:环境因素对煤炭利用生态效率评价存在显著影响,剥离环境因素与随机误差的干扰后,大多数省市的综合效率得到提高,纯技术效率提升至0.9以上是关键所在,而规模效率的改变使除广东外的29个省市均处于规模收益递增阶段。煤炭利用生态效率在地区间差异明显,呈“东部>中部>西部”态势。通过对Malmquist指数分解可知,全要素生产率变化指数与技术进步基本保持同频,且效率提升的关键节点大多与国家政策调控有关。因此可从加强信息的省际联动、推动煤炭绿色技术创新、调整产业结构形成规模集群、加大执法监管力度等方面着力提升地区煤炭利用生态效率。Using the three-stage DEA-Malmquist model,the ecological efficiency of coal utilization in 30 provinces and cities in China from 2011 to 2019 was analyzed from static and dynamic perspectives.The research results show that environmental factors have a significant impact on the evaluation of the ecological efficiency of coal utilization.After stripping the interference of environmental factors and random errors,the comprehensive efficiency of most provinces and cities has been effectively improved,and the improvement of pure technical efficiency to above 0.9 is the key to the change of comprehensive efficiency.With the change of scale efficiency,29 provinces and cities except Guangdong are in the stage of increasing returns to scale.At the same time,the eco-efficiency of coal utilization varies significantly among regions,showing a trend of“eastern>central>western”.By decomposing the Malmquist index,it can be obtained that the change index of total factor productivity and technological progress basically maintain the same frequency,and the key nodes of efficiency improvement are mostly related to national policy regulation.Therefore,efforts can be made to improve the ecological efficiency of regional coal utilization from the aspects of strengthening the inter-provincial linkage of information,promoting the innovation of coal green technology,adjusting the industrial structure to form large-scale clusters,and strengthening law enforcement and supervision.

关 键 词：煤炭利用生态效率 三阶段DEA MALMQUIST指数 环境因素 

分 类 号：F416.21[经济管理—产业经济]