中文摘要：

借鉴新经济增长理论和新经济地理学的相关方法，从城镇化和区域经济增长的空间属性出发，通过构建区域外溢作用下的区域经济增长模型分析城镇化区域外溢与区域经济增长趋同之间的动态机制。研究表明，区域经济增长的趋同和城镇化的区域外溢之间往往是相辅相成的，即城镇化的不断扩大会带来区域经济增长的趋同，区域经济增长的趋同也会进一步提高城镇化水平。同时，以成渝经济区44个区县为例，检验了区域经济增长在该区域内确实存在趋同现象。在考虑区域外溢的情况下，成渝经济区发生经济增长趋同的速度为3．16％。同时人力资本投资对经济增长的贡献大于物质资本投资对经济增长的贡献，这也符合边际收益递减规律。

英文摘要：

In the light of the theory of the new economic growth and the related approaches of the new economic geography, this paper, from the point of view of urbanization and the spatial at- tribute of regional economic growth, contructs a regional economic growth model under the action of regional spillovers to analyze the dynamic mechanism between the regional spillovers in urbanization and the regional economic growth convergence. The study shows that the regional spillovers in urban- ization and the regional economic growth convergence would supplement each other, i.e., the ever-ex- pansion of urbanization would bring about the convergence of regional economic growth; and the con- vergence of regional economic growth would further raise the level of urbanization. At the same time, taking 44 districts and counties in Chengdu-Chongqing Economic Zone as examples, this study proves that convergence does exist in regional economic growth. Taking the regional spillovers into account, the speed of the occurance of economic growth convergence in Chengdu-Chongqing Economic Zone is 3.16%. Meanwhile, the contribution of human capital investment to economic growth is greater than that of material capital investment to economic growth. This is also in line with the law of diminish- ing marginal returns.