摘要
文章基于中国加入WTO这一(准)自然实验,采用双重差分法考察中间品贸易自由化对企业出口产品质量的影响效应及其影响机制。结果表明,中间品贸易自由化有利于促进企业出口产品质量升级。异质性分析表明,与较高生产率的企业相比,较低生产率的企业出口产品质量提升幅度较大,获利较多;中间品贸易自由化有利于缓解融资约束对企业出口产品质量的影响,融资约束程度越低的企业出口产品质量的提升幅度越大。文章进行了平行趋势假设、两期双重差分法以及PSM+DID等一系列稳健性检验,研究结论依然成立。此外,文章通过构建中介效应模型进行机制分析,结果发现,进口中间品种类增加和中间品质量提升是中间品贸易自由化影响企业出口产品质量的两个作用渠道。
Based on the natural experiment of China’s accession to WTO in 2001, this paper investigates the micro influence of trade liberation of intermediate goods on the quality of export products and its influencing mechanism with Difference-in-Differences( DID). The results show that trade liberation of intermediate goods significantly enhances the quality upgrading of export products. Heterogeneity analysis indicates that compared with the enterprises with higher productivity, the enterprises with lower productivity improve the quality of their export products by a larger margin and make more profits. Trade liberation of intermediate goods is conducive to alleviating the impact of financing constraints on the quality of the enterprises’ export products. The lower the degree of financing constraints is, the greater the improvement of the enterprises’ export products quality will be. The conclusion is still valid after a series of robustness tests including parallel trend hypothesis, two-stage DID and PSM + DID. In addition, the mechanism analysis of the mediation effect model proves that the increase of the imported intermediate goods varieties and the improvement of the intermediate goods quality are the two important ways in which trade liberation of intermediate goods affects the quality of the enterprises’ export products.
出处
《国际经贸探索》
CSSCI
北大核心
2019年第2期32-53,共22页
International Economics and Trade Research
基金
国家自然科学基金项目(71273116)
关键词
中间品贸易自由化
双重差分法
出口产品质量
中介效应模型
trade liberation of intermediate goods
Difference - in - Differences ( DID)
quality of export products
mediation effect model
