Huang Heyuan, Zhang Weikun, Chen Meng, He Yiming
College of Economics & Management, South China Agricultural University, China.
National School of Agricultural Institution & Development, South China Agricultural University, China.
Heliyon. 2019 Jun 13;5(6):e01849. doi: 10.1016/j.heliyon.2019.e01849. eCollection 2019 Jun.
This paper analyzes the impact of the opening of an Intercity EUM (Electric Multiple Units) line, Guangzhou-Zhuhai Intercity Mass Rapid Transit, on GDP and population. By constructing the difference-in-difference (DID) model for whole 24 counties in Zhongshan of China, we found that with the opining of Intercity EMU, GDP growth and population inflow of the counties with Intercity EMU stations are significantly higher than those of without stations. Based on the Sharp Regression Discontinuity (SRD) Approach, we found that with the opining of Intercity EMU, the ratio of Guangzhou's GDP to that of other regions has obviously expanded, thus the opening of Intercity EMU has obviously widened the disparity of regional economic scale.
本文分析了城际动车组线路——广州至珠海城际快速轨道交通的开通对国内生产总值（GDP）和人口的影响。通过构建针对中国中山全市24个县的双重差分（DID）模型，我们发现，随着城际动车组的开通，设有城际动车组站点的县的GDP增长和人口流入显著高于没有站点的县。基于精确回归间断点（SRD）方法，我们发现，随着城际动车组的开通，广州GDP与其他地区GDP的比值明显扩大，因此城际动车组的开通明显加剧了区域经济规模的差距。
