中间品进口来源地与中国企业全要素生产率:基于贸易网络地位的研究

Chinese Firm􀆳s Source of Intermediate Imports and Total Factor Productivity——Based on Trade Network Position

本文从企业进口来源地结构的视角重新审视中间品进口对企业生产率的影响,着重考察来源地网络地位和来源地整体数目对生产率的影响及潜在作用机制。基于微观数据的研究结果表明:企业进口来源地加权网络地位的提升以及整体数目的增加均有助于企业生产率的提高;来源地网络地位的提升主要通过质量价格效应和技术溢出效应作用于企业生产率,且作用强度与产品类别有关;来源地整体数目的增加则通过种类互补效应促进了生产率提高;分样本回归结果显示,随着进口产品差异性的提高和行业技术复杂性的增加,进口来源地结构优化的生产率促进作用也会随之增强;东部沿海企业、非国有企业、一般贸易企业更善于通过进口来源地结构的优化促进企业生产率的提高。

This paper re-examined intermediate imports'effect on firm's TFP from the perspective of import sources'structure by simultaneously taking sources'trade network positions and overall number into consideration.The result based on micro-data shows that the increases of sources'trade network positions and overall number are both helpful to the enhancement of firm's TFP.Moreover,sources'trade network positions promote TFP mainly by quality price effect and technology spillover effect,which depends largely on the complexity of imported intermediates.In the meanwhile,sources'overall number promote TFP mainly by variety complemantary effect.Sub-sample regression result indicates that high-tech firms gain more from the optimizing of import sources's structure.Besides,firms from eastern area or owned by non-state capital take better advantage of sources'structure origin in promoting firms'TFP.This paper has certain practical significance for improvement of domestic firm's production efficiency.