在中国出口扩张的同时,贸易伙伴采取的NTMs也逐年增加。本文利用CEPII BACI数据库测算了中国出口的二元边际,并借助引力模型检验了NTMs对其影响效果。研究发现,贸易伙伴对华频繁发起NTMs,使得中国出口的密度边际扩张,但广度边际收缩,这与年度变化趋势完全吻合。同时,经济总量、关税水平、FDI、外部冲击及地理距离等控制变量对出口边际也有显著影响。来自发达经济体和发展中经济体的NTMs对中国出口边际的影响存在一定差异。
As the expansion of export in the world wide, China has been faced with more and more NTMs. By using the data from CEPII BACI, we measure the extensive and intensive margins of China's export. And we estimate the impact effect of NTMs on the mar- gins by gravity model. We conclude that more NTMs from trade partners will expand the in- tensive margin of China's export while contract the extensive margin, which is fully consist- ent with the annual change trend. By the way, some control variables like GDP, tariff, FDI, shock and geo distance are statistically significant on margins. The effects of NTMs are different between developed and developing economies.