全国统一大市场建设能否赋能城市创新合作？

黄 蔚　张协奎

（广西大学）

内容提要：统一大市场建设与创新发展是新时代中国式现代化的重要内容，本文结合新时代现代化建设特征，从商品、劳动、资本、数据及技术要素五个维度测算了2011—2023年262个地级及以上城市的统一大市场建设水平，并基于统一大市场建设对城市创新合作影响的实证研究发现，统一大市场建设能够促进城市创新合作网络关联程度的提升，该影响效应经内生性分析和稳健性检验后依旧成立，但会因城市区域位置和创新资源禀赋差异而不尽相同。机制分析与门槛效应分析发现，知识溢出和产业协同聚集均能有效提升统一大市场建设对城市创新合作的赋能作用，而知识产权保护强度对统一大市场建设赋能城市创新合作存在非线性影响。本文的研究为统一大市场建设如何更好地发挥其外部效应促进城市间创新合作，从而激活创新驱动效应提供了经验参考。

关键词：全国统一大市场建设；创新合作网络关联；知识溢出；产业协同聚集；知识产权保护

作者简介：黄蔚，广西大学工商管理学院博士研究生，南宁，530004；张协奎，广西大学经济学院教授、博士生导师，通信作者。

基金项目：广西高校人文社会科学重点研究基地珠江-西江经济带发展研究院科学研究基金项目“新发展阶段促进珠江-西江经济带城市碳中和协同实施的路径与对策研究”（ZX2022003）

引用格式：黄蔚,张协奎.全国统一大市场建设能否赋能城市创新合作?[J].经济与管理研究,2025,46(8):95-112.

Can the Construction of a Unified National Market Empower Urban Innovation Collaboration?

HUANG Wei, ZHANG Xiekui

(Guangxi University, Nanning 530004)

Abstract: As core components of Chinese modernization in the new era, the construction of a unified national market and the innovation-driven development strategy demand urgent clarification of their interplay mechanisms and operational pathways. Grounded in contemporary modernization characteristics, this paper gauges the level of building a unified national market in 262 prefecture-level cities from 2011 to 2023 across five factor markets—goods, labor, capital, data, and technology. The composite index exhibits a fluctuating but steadily upward trajectory, while absolute levels and growth patterns differ markedly across regions and stages. Specifically, the goods market leads in maturity, ranking well above the other four factors. By contrast, the technology market lags at the bottom of the hierarchy. Capital, labor, and data markets exhibit oscillatory growth but share a common upward trend.

Since the innovation collaboration network linkage (ICNL) serves as the fundamental infrastructure and core manifestation of innovation collaboration, embodying potential channels and generative paths while directly quantifying the intensity of intercity innovation collaboration linkage, it constitutes the primary metric for urban innovation collaboration. Empirical results indicate that the unified-market construction can enhance network centrality metrics, including degree centrality, closeness centrality, and betweenness centrality. The findings remain robust after applying two instrumental-variable strategies and three additional robustness checks.

Mechanism tests indicate that the unified-market construction can amplify knowledge spillover effects and industrial co-agglomeration effects. This confirms that such construction facilitates inter-firm ICNL across cities primarily through these dual channels. Heterogeneity analysis demonstrates divergent enabling effects across regions and resource endowments. In terms of regional patterns, the effect on network degree centrality is most potent in the central region. The gains in closeness centrality follow an eastern > western > central ladder, whereas betweenness centrality improves slightly more in the western region than in the eastern region. In terms of endowment patterns, resource-rich cities reap markedly larger network gains than resource-scarce cities.

Threshold analysis reveals a nonlinear relationship between intellectual property protection (IPP) intensity and the enabling effects of the unified-market construction on the ICNL. Specifically, IPP intensity exhibits single-threshold effects exclusively on degree centrality and closeness centrality. Region-specific policies must integrate market building with an enabling innovation ecosystem to strengthen inter-firm innovation collaboration and elevate overall innovation performance.

This paper provides empirical evidence on how the construction of a unified national market can better leverage its external effects to promote innovation collaboration among cities, thereby activating the innovation-driven effects of a unified national market.

Keywords: construction of a unified national market; innovation collaboration network linkage; knowledge spillover; industrial collaborative agglomeration; intellectual property protection

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