产品关联密度与企业出口产品质量升级

Product Density and Quality Upgrading of Export Products of Chinese Manufacturing Enterprises

本文基于2000~2013年中国海关数据库与中国工业企业数据库的匹配数据,从产品空间理论视角考察了产品关联密度对中国制造业企业出口产品质量升级的影响效应及机制。研究发现:城市内产品关联密度与省内产品关联密度对中国制造业企业出口产品质量升级均产生了显著正向影响,其中城市内产品关联密度对企业出口产品质量的提升作用更大;相比中西部地区企业,东部地区企业的城市内产品关联密度对出口产品质量升级的促进效应更大;城市内产品关联密度主要通过促进人力资本提升、技术溢出与中间品质量提升来推动中国制造业企业的出口产品质量升级。

Based on the matching of the customs database and the Chinese industrial enterprise database from 2000 to 2013,this paper examines the effect and mechanism of product density on the quality of Chinese manufacturing enterprises′export products from the perspective of product space theory.The results show that:firstly,product density within cities and provinces have a significant positive impact on the quality of Chinese manufacturing enterprises′export products,and the product density within cities has a greater effect on the quality of Chinese enterprises′export products.Secondly,the expansion study shows that intra-city product density has a more significant promoting effect on the export product quality of enterprises in eastern China.Thirdly,further examination of its influence mechanism shows that intra-city product density mainly affects the quality of Chinese manufacturing enterprises′export products through the mechanism of human capital promotion,technology spillover and intermediate product quality improvement.