中文摘要：

本文在外部性和新经济地理综合框架下研究中国284个地级市生产性服务业集聚对城市化的影响。结果显示，生产性服务业专业化和多样化集聚对城市化具有显著的技术溢出效应，且专业化集聚效果更明显；而生产性服务业空间集聚规模则通过市场外部性作用于城市化。生产性服务业专业化集聚对西部地区影响大于东、中部，而多样化集聚和空间集聚规模的作用由东向西依次递减；国内市场、国际市场亦对各地区生产性服务业集聚效应产生不同程度的影响。

英文摘要：

This paper makes a study on the effects of the agglomeration of producer services on population urbanization of 284 cities. The results show that, specialization and diversification agglomeration of producer services positively affect urbanization through technology spillover effect, and the effect of specialization agglomeration is more significant. Moreover, the spatial agglomeration scale of producer services impacts the urbanization through spatial market externalities. The effect of specialization agglomeration of producer services is larger in the west than that in the east and central part, and the effects of diversification agglomeration and spatial agglomeration scale are decreasing from east to west. Domestic and international market both plays an important role on the agglomeration effect of producer services.