Measurement of coupling development level of new infrastructure investment and digital transformation and its temporal and spatial evolution trend

摘要: Based on the coupling mechanism between new infrastructure investment level and digital transformation level, a comprehensive index system is constructed. By using entropy weight method, coupling coordination evaluation model, exploratory spatial data analysis (ESDA) and standard deviation ellipse model, the coupling coordination development level of new infrastructure investment level and digital transformation level in 31 provinces and cities in China from 2014 to 2021 is calculated, and its spatial agglomeration level and spatial-temporal evolution characteristics are analyzed. The results show that: ① the comprehensive index of new infrastructure investment level and digital transformation level shows an increasing trend, and the overall digital transformation level shows a gradient decreasing distribution pattern from east to west; ② The coupling coordination between the new infrastructure investment level and the digital transformation level in various provinces and cities is increasing, and more and more provinces are at the basic coordination level or above, but more than half of the provinces are out of balance. Finally, combined with the location distribution and evolution process of the coupling coordination degree between the new infrastructure investment level and the digital transformation level in four major regions of China, the corresponding policy suggestions are put forward.