基于空间模型的长江经济带经济增长收敛性研究
2015-10-27徐鸿赵玉
徐鸿++赵玉



摘要:在空间经济视角下改进了Barro经济增长的绝对收敛和Mankiw-Romer-Weil条件收敛模型。对长江经济带内108个地级市经济增长的收敛性及其生成机制进行了检验。结果表明:(1)长江经济带经济增长存在着绝对β收敛,绝对收敛速率为1.41%~1.68%,半衰期周期为41~49年;(2)在控制了劳动力、实物资本投资、房地产开发投资、FDI、地方政府行为和人力资本投资等变量之后,长江经济带存在条件β收敛,条件收敛速率为1.41%~1.59%,半衰期周期为44~49年;(3)区域经济增长具有显著的外溢效应,外溢乘数约为0.13~0.35,这说明经济带内存在若干个促进经济收敛的“中心区域”(4)经济增长的空间溢出效应是区域经济增长收敛的主要原因,但溢出效应受到空间距离的制约,这导致了长江经济带目前的经济增长收敛以局部收敛为主。
关键词:经济增长;β收敛;溢出效应;空间模型;长江经济带
中图分类号:F061.5 F124.1 文献标识码: 文章编号:
Research on Economic Growth Convergence of Yangtze River Economic Belt: A Spatial Perspective
XU Hong, ZHAO Yu
(East China Institute of Technology, College of Economics & Management, Nanchang, 330013)
Abstract: The paper developed and improved Barros absolute convergence frame and Mankiw, Romer and Weils conditional convergence frame via a spatial perspective. Using the spatial auto regression model and spatial error model, we analyzed the economic growth convergence and its mechanism of the cities on Yangtze River economic belt. The results showed that (1) there was an absolute convergence in this economic belt, the rate of absolute convergence was 1.41%~1.68%, and the half life period was about 41 to 49 years. (2) After controlling the variables such as labor force, material capital investment, real estate investment, FDI, local public finance expenditure and human capital investment, we also found the convergence on the economic belt, the rate of conditional convergence was 1.41%~1.59% and the half life period was about 44 to 49 years. (3) There was a significant spillover effects on the economic belt, the multipliers were about 0.13~0.35. (4) The important reason of the economic convergence was spatial spillover effects. However, restricted by spatial distance, local convergence was dominant on the economic belt.
Keywords: economic growth;βconvergence; spillover effect; spatial model; Yangtze River economic belt
1.引言
长江经济带横贯我国腹心地带,经济腹地广阔,对于开启东部、中部和西部协同发展意义重大。依托黄金水道,不仅可以承接东部产业转移,也可以有效带动西部改革,进而为中国经济长期持续健康发展提供支撑。但是,长江经济带内部经济发展并不均衡,省际或市际之间经济发展水平的差异巨大,既包含了东部发达省市也包含了西部落后省份。其中,长三角地区的上海、江苏和浙江在2013年的人均地区生产总值为9.01万元/人、7.46万元/人和6.85万元/人,而中部地区的安徽和江西人均地区生产总值为3.17万元/人和3.18万元/人,云贵高原的贵州和云南人均地区生产总值为2.29万元/人和2.51万元/人,可见区内贫富差距显著。……
