异质性环境规制、空间溢出与渔业碳排放效率

Heterogeneous Environmental Regulation,Spatial Spillover and Fishery Carbon Emission Efficiency

探索合理的环境规制手段和适当的环境规制力度以提高渔业碳排放效率,是中国渔业低碳发展的必由之路。文章基于中国2004—2020年的省级面板数据,运用包含非期望产出的超效率SBM模型对中国渔业碳排放效率进行测算。在此基础上,将环境规制分为命令型环境规制(CER)、市场型环境规制(MER)和自愿型环境规制(VER),采用空间计量模型实证检验3种环境规制对渔业碳排放效率的影响。结果表明:(1)从时间维度看,研究期内渔业碳排放效率年均增长率为7.327%;从空间维度看,渔业碳排放效率呈现出中部低、东西两边高的特征。(2)空间杜宾模型结果表明,3种环境规制对本地区渔业碳排放效率的作用存在显著的异质性,且CER和MER存在显著的空间溢出特征。(3)空间分位数模型结果显示,MER对低层级渔业碳排放效率的促进作用较为明显,而CER与VER对高层级渔业碳排放效率的抑制作用更弱。

It is the only way for China′s fishery low-carbon development to explore reasonable means of environmental regulation and appropriate intensity of environmental regulation to improve fishery carbon emission efficiency.Based on China′s provincial panel data from 2004 to 2020,a super-efficiency SBM model containing unexpected output was used to estimate China′s fishery carbon emission efficiency.On this basis,environmental regulations were divided into CER,MER and VER,and the spatial econometric model was used to empirically test the impact of the three environmental regulations on fishery carbon emission efficiency.The results showed that:(1)from the time dimension,the average annual growth rate of fishery carbon emission efficiency was 7.327%during the study period.From the spatial dimension,the carbon emission efficiency of fishery was low in the middle and high in the east and west.(2)The results of spatial Dubin model showed that there was significant heterogeneity in the effects of the three environmental regulations on fishery carbon emission efficiency in this region,and CER and MER had significant spatial spillover characteristics.(3)The results of the spatial quantile model showed that MER had an obvious promotion effect on the carbon emission efficiency of lower-level fisheries,while CER and VER had a weaker inhibition effect on the carbon emission efficiency of higher-level fisheries.