中文摘要：

促进产业融合、实现融合创新的现实空间平台就是产业协同集聚。以产业协同集聚进行空间布局调整,从而实现城市生产效率增进,对新常态下促进发展动力由要素驱动、投资驱动向创新驱动的转变具有重要现实意义。产业协同集聚通过分工和技术外部性可以产生创新,提高城市生产效率,是实现发展动力转换的重要途径。在运输成本和面对面接触需求的主导下,产业协同集聚与城市空间结构形成循环累积的因果关系并互相强化。空间计量的实证结果验证了产业协同集聚对城市生产效率的增进作用,周边城市效率提升也能带动本地效率增进。产业协同集聚的效率增进效应不仅存在地区差异,还具有行业异质性特征。受交易成本和面对面接触需求的影响,产业协同集聚对城市生产效率增进的空间外溢效应随距离增加而衰减,在300公里范围内的空间外溢效应最强,超过750公里后空间外溢效应明显下降。因此,以产业协同集聚进行空间布局调整是实现城市生产效率增进的现实选择,这不仅需要差别化和精细化指导,还需要突破行政区划限制进行协调。

英文摘要：

The development of industry convergence can create integrated innovation,and it is an essential way for economic development driving force to transit from factor-driven and investment-driven stage to innovation-driven stage.And,synergy and co-agglomeration of industries（hereinafter referred to as SCI）is the spatial platform for industry convergence to happen in practice.Nowadays,it is an important trend to improve the city productivity and competitiveness,and a critical approach to optimize the industrial spatial distribution and promote the economic structure transition by forming SCI in limited space and promoting its level.By constructing the general analysis framework,this paper systematically examines the mechanism of cities＇productivity improvement based on SCI under the background of integrated innovation and conversion of driving force for economic development in China.SCI has″Industry″and″Space″dual character.On the one hand,the SCI can create innovation through labor specialization and technical externality, which lead to the improvement of cities＇ labor productivity,and it is the channel to realize the conversion of development driving force;on the other hand,the SCI and city spatial structure mutually reinforce and generate circular cumulative causation under the effect of transportation costs and″face-to-face″contact needs.Therefore,this paper builds a bridge between the SCI and the improvement of city productivity theoretically,and provides a theoretical basis for promoting the level of SCI by adjusting the cities＇spatial structure.This paper mainly investigates the productivity improvement effect and the spatial spillover effect of SCI on cities＇labor productivity by utilizing the modified E-G index.A spatial econometric analysis across 240 Chinese cities in the year of 2004—2012shows that SCI has a positive impact on higher productivity in these cities,and neighboring cities＇productivity improvement also has a positive impact on local cities.However,the positive relatio