Abstract: Cities‘ roles on value chain resilience of integrated circuit industry vary with their sizes.To understand their relationship, this paper establishes a linkage between urban size and value chain resilience of integrated circuit industry, based on a case study of the Beijing-Tianjin-Hebei urban agglomeration, and uses fixed effect least squares estimation model to deeply elucidate impacts of urban size on value chain resilience of integrated circuit industry.Impact coefficients of urban size on  value chain resilience of integrated circuit industry are at 0.278 4 in ultra-large cities, 0.243 7 in large cities, and 0.146 0 in type I cities, significant at the 5% or 10% level, suggesting a larger urban size can increase value chain resilience of integrated circuit industry.Impact coefficients of enterprise scale, profitability and operational capabilities are at 0139 5, 0.074 3 and 0.043 1, respectively, significant at the 1% or 10% level, indicating they all play a positive impacting role on the value chain resilience of the integrated circuit industry.Ultra-large cities’ interaction with enterprise scale produces a positive role with coefficient at 0.144 1 on value chain resilience of integrated circuit industry, while large cities and type I cities are at 0.193 5 and 0.215 2,  it is indicated that the positive impact of the interaction term between the urban size and the enterprise scale on the resilience of the value chain of the integrated circuit industry will gradually weaken as the urban size expands. Ultra-large cities‘ interaction with enterprise profitability plays a positive role at 0.145 6 on value chain resilience of integrated circuit industry, while large cities and type I cities are at -0.214 5 and -0.287 3,  it shows that the positive impact of the interaction term between the urban size and the profitability of enterprises on the resilience of the value chain of  the integrated circuit industry will gradually increase as the urban scale expands.

Key words: urban size, integrated circuit industry, value chain resilience, Beijing-Tianjin-Hebei urban agglomeration

摘要： 不同的城市规模对集成电路产业价值链韧性所发挥出的影响作用也不尽相同，为了把握二者之间的作用关系，本文通过构建城市规模与集成电路产业价值链韧性的关联机理，以京津冀城市群为研究对象，并运用固定效应最小二乘估计模型，进而深入探究了城市规模对集成电路产业价值链韧性的影响作用。研究结果表明：1）超大规模城市、特大规模城市、Ⅰ型规模城市对集成电路产业价值链韧性的影响系数分别为0.278 4、0.243 7、0.146 0，且都在5%或10%水平下显著，表明城市规模越大就越能够增强集成电路产业价值链韧性。2）企业规模、企业收益能力、企业经营能力对集成电路产业价值链韧性的影响系数分别为0.139 5、0.074 3、0.043 1，且均在1%或10%水平下显著，表明企业规模、企业收益能力、企业经营能力都对集成电路产业价值链韧性发挥出了正向影响作用。3）超大规模城市与企业规模的交互项对集成电路产业价值链韧性产生了0.144 1的正向影响作用，而特大规模城市、Ⅰ型规模城市与企业规模的交互项则对集成电路产业价值链韧性分别产生了0.193 5、0.215 2的正向影响作用，由此表明城市规模与企业规模的交互项对集成电路产业价值链韧性发挥的正向影响作用会随着城市规模的扩大而逐渐减弱。4）超大规模城市与企业收益能力的交互项对集成电路产业价值链韧性产生了0.145 6的正向影响作用，而特大规模城市、Ⅰ型规模城市与企业收益能力的交互项则对集成电路产业价值链韧性分别产生了-0.214 5、-0.287 3的负向影响作用，由此表明城市规模与企业收益能力的交互项对集成电路产业价值链韧性发挥的正向影响作用会随着城市规模的扩大而逐渐增强。

关键词: 城市规模, 集成电路产业, 价值链韧性, 京津冀城市群