产业链视角下我国有色金属行业生态效率的动态影响分析

An Analysis on the Dynamic Impact of the Ecological Efficiency of China’s Nonferrous Metal Industry from the Perspective of Industrial Chain

采用Super-SBM模型对规模以上金属行业产业链2004—2018年的生态效率进行实证分析,建立时间序列,运用VAR模型,分析以“有色金属矿采选业”为代表的上游产业、以“冶炼及压延加工业”为代表的中游产业、以“通用设备制造业等”为代表的下游产业的生态效率间的动态关系。结果显示:有色金属产业链上游的生态效率主要受到自身及外部因素影响,受中、下游影响较小;中游主要受上、下游影响,受自身及外部因素影响较小;下游受自身及外部因素影响较大,受上、中游影响较小。

This paper uses the Super-SBM model to make an empirical analysis on the ecological efficiency of the industrial chain of metal industries above Designated Size from 2004 to 2018,establishing a time series.Then it employs the VAR model to analyze the dynamic relationship of the ecological efficiency among the upstream industries represented by“non-ferrous metal mining and dressing industry”,the midstream industries represented by“smelting and calendering processing industry”,and the downstream industries represented by“general equipment manufacturing industry”.The results show that the ecological efficiency of the upstream of the nonferrous metal industry chain is mainly affected by its own and external factors with less influence from the middle and downstream;the midstream is mainly subject to the upstream and downstream with less impact from its own and external factors;and the downstream is greatly influenced by its own and external factors with less effect from the upstream and midstream.