集聚与分散:新经济地理学模型与城市内部空间结构、外部规模经济效应的整合研究

本文将城市内部空间结构和外部规模经济效应同时整合到标准的新经济地理学模型框架之中。模型的结论显示,作为重要分散力量的城市内部通勤成本和作为重要集聚力量的马歇尔外部规模经济效应都对经济活动的集聚程度有重要的影响,引入这两个因素使得模型更加接近经济现实。此外,模型的数值模拟结果显示,在引入外部规模经济效应后,即使运输成本为零,经济活动完全集聚在某一地区也可能是稳定均衡;同时,城市内部通勤成本确实会降低经济活动的集聚程度。

AGGLOMERATION AND DISPERSION:INTEGRATION OF INTRA-URBAN COMMUTING COST AND EXTERNAL TECHNOLOGICAL EXTERNALITIES

This paper integrates the intra-urban spatial structure and Marshall's external scale economy into the standard model of new economic geography.The model shows that both intra-urban commuting costs,which are a dispersion factor,and the external scale economy,which is an agglomeration factor,exert great impacts on the level of economic agglomeration.The model becomes closer to the reality by integrating the two factors.The numerical simulation shows that agglomeration would reach a stable equilibrium even if...