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京津冀的环境效率及其收敛性分析 被引量:11

Environmental efficiency and its convergence of Beijing-Tianjin-Hebei Regions
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摘要 运用包含污染物排放的非经向、非角度的SBM-DEA模型测算了2005-2012年京津冀13个地级城市的环境效率,并对其收敛性进行了分析。结果显示:京津冀环境效率的整体水平较低,2008年以后,呈逐年下降的趋势,但下降幅度较小;京津冀环境效率既存在绝对收敛又呈现条件收敛,即京津冀环境效率随着时间的推移有逐步缩小的趋势;控制变量人均GDP、能源强度、外商直接投资和第二产业比重,对环境效率收敛过程的影响不同,人均GDP和能源强度与环境效率的变化显著负相关,对环境效率的收敛过程起到抑制作用,而外商直接投资则相反,对环境收敛过程起到促进作用,第二产业比重对环境效率变化的影响不显著。 This essay calculates the environmental efficiency of 13 prefecture-level cities of Beijing-Tianjin-Hebei Regions from 2005-2012 by non-radial SBM model and examines convergence of the environmental efficiency of inter-cities.The results show that the environmental efficiency of the whole regions is not high and it presents a slight decrease trend after2008.The cities show apparent absolute β convergence and conditional β convergence,which shows that the gap of environmental efficiency between different cities will be gradually narrowed over time.The control variables,such as per capital GDP,energy intensity,foreign direct investment and secondary industry ratio,have different effects on the environmental efficiency changes.It appears to be a significant positive relation between the environmental efficiency changes and per capital GDP and energy intensity,while foreign direct investment has a significant negative effect.Secondary industry ratio is not significantly related to the environmental efficiency changes.
作者 王怡 茶洪旺
出处 《城市问题》 CSSCI 北大核心 2016年第4期18-24,共7页 Urban Problems
关键词 京津冀 环境效率 收敛性分析 Beijing-Tianjin-Hebei Regions environmental efficiency convergence analysis
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