经济空间集聚能提高碳生产率吗?

Whether Economic Spatial Agglomeration Can Increase Carbon Productivity or Not?

经济空间集聚是导致碳生产率变动的重要途径,本文采用地级以上城市的统计数据,构建动态GMM模型和面板门限模型,分别从企业、产业和区域三个层面实证检验了经济空间集聚对碳生产率的影响。结果表明:以市场动力为基础的微观企业向市场中心靠近能够提高碳生产率水平。多样化的集聚模式更有利于提高碳生产率,专业化的集聚模式对碳生产率影响不显著。政府对产业集聚干预带来的资源错配不利于碳生产率的提高,其中,政府通过金融干预导致的专业化集聚比多样化集聚带来的碳生产率损失更大。表征区域层面集聚的城市就业密度对碳生产率产生了先促进后抑制的作用,两者呈现倒"U"型关系。本文的研究结论对于中国优化经济要素空间形态以保持经济增长和稳定大气中二氧化碳总量目标具有重要的理论和现实意义。

Economic space agglomeration is an important factor to cause a change in the carbon productivity. By using the statistical data of ground level above the city and building dynamic GMM model and panel threshold model,this paper studies how economic spatial agglomeration affects carbon productivity from enterprises, industrial and regional aspects. Results show that the approaching of market-power-based micro enterprises to market center can improve the level of carbon productivity. Diversified agglomeration model is more advantageous in improving carbon productivity,the effects of specialization of agglomeration on carbon productivity is not significant.Enhancing government intervention which distorts the allocation of resources can inhibit the improvement of carbon productivity. The specialization of agglomeration caused by government financial intervention can bring greater loss of carbon productivity than diversified agglomeration.The relationship of urban employment density and carbon productivity presents as the inverted ＂U＂shape. Conclusion of this paper has important theoretical and realistic significance in optimizing economic element space form and keeping a steady economic growth and the amount of carbon dioxide in the atmosphere goal.