关键词: 数字消费, 城市技术突破式创新, 双重差分模型, 新质生产力

Abstract: Urban technological breakthrough innovation is a key path to driving new quality productivity development. The rapid development of digital consumption in recent years is becoming an important fulcrum for urban technological breakthroughs to leapfrog innovation capabilities. Relying on the panel data of 284 Chinese cities from 2011 to 2022, and based on the quasi-natural experiment of the national information consumption pilot, a double-difference model is constructed to identify and test the mechanism of action, heterogeneity, marginal effect and spatial characteristics of digital consumption affecting urban technological breakthrough innovation. The findings of the study are as follows, digital consumption significantly enhances the urban technological breakthrough innovation capacity and the conclusions have passed a series of robustness tests. Heterogeneity analysis finds that the enabling effect of digital consumption on urban technological breakthrough innovations is more pronounced in regions with higher intensity of intellectual property protection, governmental digital economy development efforts, and resident consumption structure. The mechanism test finds that digital and real technological integration, the upgrading of the innovation chain and the growth of the scale of future industries are the important influence mechanisms of digital consumption on urban technological breakthrough innovation. Expansion analysis finds that the influence of digital consumption on urban technological breakthrough innovation has marginal diminishing characteristics and a spatial siphoning effect with attenuating boundaries. This study provides empirical evidence and insights to enhance the ability of urban technological breakthrough innovation and thus enrich the cultivation of new quality productivity.

Key words: Digital Consumption, Urban Technological Breakthrough Innovation, Double-Difference Modeling, New Quality Productivity