Digital economy development and haze pollution: evidence from China.

The development of the digital economy radiates to national ecological protection and resource utilization, holding the key to haze governance. However, as the largest developing country, the impact of China's digital economy on haze pollution has received little attention. Based on the panel data of 275 prefecture-level cities in China from 2011 to 2018, this paper studies the impact and mechanism of digital economy development on haze pollution. The results of fixed effect model show that the development of digital economy has a significant negative impact on urban haze pollution in China. The results of heterogeneity analysis show that the development of digital economy has a more significant inhibitory effect on the haze pollution of resource-based cities, non-resource-based cities, eastern cities, and large cities. The quasi-natural experimental results show that the establishment of the "national big data comprehensive experimental area" is conducive to haze pollution control, which proves the conclusion that the digital economy can significantly reduce haze pollution. The development of digital economy can significantly reduce haze pollution by promoting technological innovation and optimizing resource allocation.