国家双创示范基地建设何以赋能新质生产力提升?OACHSSCD

At present,China still faces challenges in fostering and developing new quality productive forces,including inadequate capacity for integrating international resources,insufficient investment in basic science and technology,and blocked pathways for the transformation of scientific and technological achievements into practical applications.As an important institutional exploration to implement the national entrepreneurship and innovation policies and stimulate regional innovation vitality,demonstration bases for entrepreneurship and innovation boast unique advantages in optimizing the allocation of innovation resources,building platforms for achievement transformation,and nurturing innovation entities.Therefore,systematically identifying the impact of the construction of these bases on new quality productive forces holds theoretical value and practical significance. This paper uses panel data from 277 prefecture-level and above cities in China from 2011 to 2023.By employing the double machine learning(DML)method to managing high-dimensional confounding variables,this paper empirically identifies and estimates the policy treatment effects of the demonstration bases for entrepreneurship and innovation with greater precision and robustness.The findings show that the construction of these bases can improve new quality productive forces,and this conclusion remains valid after a series of robustness checks.Mechanism analysis indicates that this enabling effect is realized mainly through three channels:improving entrepreneurship incubation capability,enhancing science and technology finance incentives,and strengthening fiscal guidance for science and technology.Heterogeneity analysis reveals that the policy effect is more pronounced in economically developed cities,large cities,non-resource-based cities,and non-old industrial base cities,suggesting varying policy adaptability across urban contexts. According to the above findings,this paper puts forward relevant policy recommendations:first,deepening the construction of these bases,further improving supporting policies and dynamic evaluation mechanisms,and optimizing the innovation ecosystem;second,unclogging transmission channels and stimulating innovation and entrepreneurship vitality through professional incubation services,diversified sci-tech finance products,and targeted fiscal support;third,implementing differentiated strategies based on urban characteristics to promote the coordinated regional development of new quality productive forces. This paper enriches the research on the external effects of the construction of demonstration bases for entrepreneurship and innovation and clarifies the specific mechanisms through which such construction affects new quality productive forces.The findings provide an important reference for deepening the construction of these bases,fostering new quality productive forces,and formulating relevant regional innovation policies.