出口多样化、研发投入与出口产品质量升级——基于PVAR模型的实证分析

Export Diversification,R&D Input and Export Quality Upgrading——An Empirical Study Based on PVAR Model

基于2003—2019年中国对世界117个国家的SITC Rec.3四分位产品出口数据,采用面板向量自回归模型,探讨制造业出口多样化、研发投入与出口产品质量升级之间的互动关系及作用机制。结果表明:制造业出口产品质量整体水平较高,且呈动态上升趋势;制造业出口多样化水平不断提高,对出口产品质量升级具有显著的积极作用;制造业行业研发投入强度不断提高,自主创新能力不断增强,显著促进了出口产品质量的升级;出口产品质量持续升级在长期内会降低出口多样化水平,促使企业转化为高附加值、高质量产品的出口专业化,同时要求企业优化研发投入结构和提高研发投入效率,为出口产品质量升级蓄力。

Based on China s export data of SITC Rec.3 four-digit code to 117 countries in the world from 2003 to 2019,this paper uses the panel vector autoregressive(PVAR)model to explore the interactive relationship and mechanism of manufacturing export diversification,R&D input and export quality upgrading.The conclusions show that:first,the overall level of manufacturing export quality is relatively high and shows a dynamic upward trend.Second,the continuous increase of manufacturing export diversification has a significant positive effect on export quality upgrading;the improvement of R&D input in manufacturing industry and the enhancement of independent innovation capabilities have significantly promoted export quality.Third,the continuous upgrading of export quality will hinder export diversification in the long-run,and it is better for enterprises to transform into specialization of high value-added and high-quality products,meanwhile,it also require enterprises to optimize the structure and efficiency of R&D input for further promoting export quality upgrading.