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基于SBMMalmquistTobit模型的沿黄九省(区)环境效率差异及影响因素分析

Keywords: 非期望产出,SBMMalmquistTobit模型,环境效率,影响因素,沿黄九省(区)

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Abstract:

从非期望产出角度运用SBM模型测度沿黄九省(区)2001—2010年的环境效率静态水平,通过Malmquist生产率指数模型分析沿黄九省(区)环境效率的动态变化趋势,通过Tobit回归分析方法探讨影响沿黄九省(区)环境效率的影响因素,旨在对沿黄九省(区)环境效益评价提供科学依据和决策参考。结果表明:(1)在考虑环境变量之后,区域的平均效率水平均有一定程度的降低,上中游省份对环境变量的引入较下游省份更为敏感;沿黄九省(区)环境效率静态水平均相对较低,上中游省份较下游省份更甚。(2)环境效率水平有向好发展的态势,其值的改善是技术效率和技术进步两个因素共同作用的结果。(3)经济、制度和地区等因素对环境效率的影响效果各有不同,这些因素对环境效率的作用机理存在一定差别。

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