黄河流域新基建驱动数字经济可持续发展的效应研究

为探究黄河流域新基建投入与数字经济可持续发展的效应关系，基于2011—2021年黄河流域九省的面板数据，构建新基建投入、数字经济可持续发展指数，运用双向固定效应模型、稳健性检验、中介效应和异质性分析对新基建投入驱动数字经济可持续发展的效应进行测算。结果表明，黄河流域新基建投入能够直接、间接促进数字经济可持续发展,并存在地区差异性，表现为新基建投入对上游地区数字经济可持续发展的促进作用明显大于中下游地区。

A Study on the Effect of New Infrastructure Investment on the Sustainable Development of the Digital Economy in the Yellow River Basin

The relationship between the investment in new infrastructure and the sustainable development of the digital economy in the Yellow River Basin was explored. Based on panel data from nine provinces in the Yellow River Basin from 2011 to 2021, indices for investment in new infrastructure and sustainable development of the digital economy were constructed. A two-way fixed effects model, robustness test, mediation effect and heterogeneity analysis was used to measure the effects of investment in new infrastructure on driving the sustainable development of the digital economy. The results show that investment in new infrastructure in the Yellow River Basin can directly and indirectly promote the sustainable development of the digital economy, and there are regional differences with a more significant promoting effect in the upstream areas than in the middle and lower reaches.