Based on the two-stage value chain perspective, this paper uses the Super-NSBM model to measure the green technology research and development efficiency and green achievement transformation efficiency of 284 prefecture-level cities in China from 2011 to 2020, and constructs the digital economy industry development index by using micro data of 1,355,300 digital economy enterprises. Through the spatial Durbin model, this paper empirically explores the impact of digital economy industry development on green innovation efficiency at two stages. The study found that China's digital economy industry, green technology research and development efficiency, and green achievement transformation efficiency all present the spatial agglomeration trend. The development of the digital economy industry can significantly promote the efficiency of green science and technology research and development and the efficiency of green achievement transformation, but there is a negative spillover effect on the efficiency of green achievements transformation. And this conclusion still holds after a series of robustness tests. Sub-regional studies show that the digital economy industry development dividend is more significant in eastern and central cities. Its promoting effect on the efficiency of green innovation is more evident in both stages. The moderating effect of “hard facilities” and “soft environment” shows that digital infrastructure, digital literacy of talents, and digital financial support have different degrees of positive moderating effects in the two stages of green technology research and development and green achievement transformation.
GUO Ai-jun and Colleagues
. The impact of digital economy industry development on the green innovation efficiency in cities: Based on a two-stage value chain perspective[J]. Urban Problems, 2023
, 330(1)
: 49
-59
.
DOI: 10.13239/j.bjsshkxy.cswt.230109
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