进口贸易与中国城市的绿色转型发展——基于绿色全要素生产率的研究

Import and the Green Transformation Development of Chinese Cities--A Study Based on Green Total Factor Productivity

随着中国对外贸易发展进入新阶段,扩大进口既是新时代中国发展的战略抉择,更是实现经济高质量发展的重要举措。本文在探讨进口贸易影响绿色生产率的基础上,将空气污染物、二氧化碳和能源消费纳入生产函数,使用动态SBM模型测算了城市绿色全要素生产率,并基于2000—2013年中国城市面板数据检验了进口贸易对城市绿色全要素生产率的影响。研究发现,中国城市绿色全要素生产率整体水平偏低,呈波动下降走势和东高西低空间分布,进口贸易对城市绿色生产率的影响在东部和中部地区较为明显,西部地区并不显著,并且进口产品技术含量越高,其提升效应越显著。

As China’s foreign trade has developed into a new stage,greater import openness is not only a strategic choice for China’s development in the new era,but also an important measure to achieve high-quality economic development. On the basis of discussing the impact of importation on green productivity, this paper incorporated air pollutants,carbon dioxide and energy consumption into the production function,and calculated urban green total factor productivity through the dynamic SBM model. It then estimated the influence of expanding importation on urban green total factor productivity based on the panel data of Chinese cities from 2000 to 2013. The study results indicate that the overall level of green total factor productivity in Chinese cities is low, showing a fluctuating downward trend and a spatial distribution of high east and low west. The impact of importation on urban green productivity is more pronounced in the eastern and central regions,while the western region is not significant. In addition,the higher the technical content of imported products,the more significant the promotion effect.