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首页> 外文期刊>Ecological Modelling >Modeling the eco-efficiency of Chinese prefecture-level cities with regional heterogeneities: A comparative perspective
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Modeling the eco-efficiency of Chinese prefecture-level cities with regional heterogeneities: A comparative perspective

机译：用区域异质性建模中国县级城市的生态效率：比较视角

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It is important to investigate the sustainability nexus using composite ecological efficiency (eco-efficiency) indicators from quantitative and computational modeling perspectives. To provide a more comprehensive measure of eco-efficiency, this paper develops three data envelopment analysis (DEA) models incorporating metafrontier and undesirable outputs into a slacks-based measure (SBM), an epsilon-based measure (EBM), and minimum distance to weak efficient frontier (MinDW), respectively, named Meta-U-SBM, Meta-U-EBM, and Meta-U-MinDW. We show theoretically: if a decision-making unit (DMU) is being Meta-U-SBM-efficient, it is also being Meta-U-EBM-efficient and Meta-U-MinDW-efficient, and vice versa. For each DMU, its score measured by Meta-U-MinDW is the highest, while its score measured by Meta-U-SBM is the lowest. Using the proposed models, we make a first empirical attempt at measuring the eco-efficiency of the Key Environmental Protection prefecture-level cities in China from 2003 to 2015. The results show that: (1) the eco-efficiency of eastern cities performs the best, followed by central cities and western cities. Cities not listed as resource-based (RB) outperform RB cities; (2) eastern cities are closer to metafrontier than central and western cities; and (3) efficiency change and technological progress dominate the basic trend of the eco-efficiency growth. Results derived from the proposed methodologies can help managers and policymakers in the city to assess sustainability development quantitatively and comprehensively, they can also provide implications for the environmental management of sustain ability development at city level. Policy implementations are presented based on the empirical results.
机译：研究可持续性Nexus使用从定量和计算建模视角来使用复合生态效率（生态效率）指标来研究可持续性Nexus。为了提供更全面的生态效率衡量，该论文开发了将MetaFr之间的三种数据包络分析（DEA）模型，并将不希望的输出变成了基于Slacks的措施（SBM），基于epsilon的度量（EBM）和最小距离弱效前沿（MINDW），分别为META-U-SBM，META-U-EBM和META-U-U-Mindw。我们理论上展示：如果决策单位（DMU）是META-U-SBM的高效，它也是META-U-EBM高效和META-U-U-MINDW-UNDUSTER，反之亦然。对于每个DMU，由Meta-U-U-Mindw测量的分数最高，而Meta-U-SBM测量的分数是最低的。使用拟议的模型，我们从2003年到2015年衡量了中国重点环保县级城市的生态效率的首要经验。结果表明：（1）东城市的生态效率执行最好的，其次是中部城市和西部城市。未列为基于资源（RB）优于RB城市的城市; （2）东城市比中西部城市更接近Metafr之间; （3）效率变化和技术进步主导了生态效率增长的基本趋势。结果来自拟议方法的结果可以帮助管理者和政策制定者定量和全面地评估可持续性发展，他们还可以为城市一级的维持能力发展环境管理提供影响。策略实施是根据经验结果提出的。

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