关键词: 数字经济, 全要素生产率, 创新发展, 非线性特征, 空间溢出效应

Abstract: To explore the impact and mechanism of the digital economy on the innovative development of manufacturing enterprises, empirical tests were conducted using Chinese urban data and micro data of manufacturing enterprises from 2011 to 2020. The findings demonstrate that the development of the digital economy has significantly improved the productivity of manufacturing enterprises, becoming a new driving force for innovative development in the manufacturing industry. This conclusion is significantly supported by endogeneity testing. The impact mechanism indicates that the development of the digital economy enhances the total factor productivity of manufacturing enterprises by improving resource allocation and promoting technological innovation. The threshold model and spatial model tests indicate that the digital economy has a significant non-linear feature of increasing marginal effects and spatial spillover effects on the productivity improvement of the manufacturing industry. Heterogeneity analysis shows that the digital economy has a significant impact on improving productivity in the eastern region, digital economy industries, and state-owned enterprises. Adopting a micro perspective of enterprises, this paper deepens the understanding of how urban digital economy promotes innovative development in manufacturing, providing empirical evidence on digital economy-enabled industrial innovative while offering theoretical references for formulating digital economy development strategies and manufacturing industry policies.

Key words: digital economy, total factor productivity, innovative development, nonlinear characteristics, spatial spillover effects