Digital Technology and the Length of Value Chain:Stretching or Shortening
This paper empirically investigates the relationship between digital technology and value chain length based on the 2000-2018 OECD inter-country input-output tables and UIBE GVC Index database.It finds that there is an inverted U-shaped relationship between digital technology and the length of the value chain.That is,digital technology has a lag effect in the early stages of development,which subsequently leads to the extension of the value chain.When the develop-ment volume is too large,development imbalances will lead to the shortening of the value chain.The level of innovation and the level of human capital play a positive role in promoting the length of the value chain,and digital technology af-fects the length of the value chain through an inverted U-shaped relationship between the level of innovation and the level of human capital.At the same time,the impact of digital technology on the length of value chain is heterogeneous due to the different industry characteristics and value chain types.The moderating effect shows that,as a high-quality manifes-tation and achievement display of the application and development of digital technology,industrial intelligence plays a positive regulatory role in the inverted U-shaped relationship between digital technology and value chain length.When the level of industrial intelligence is high,the curve will become steeper and the inflection point will be delayed.Promo-ting the high-quality development of digital technology will help the further development of the global value chain.
digital technologythe length of value chainshortening of value chaininverted U-shaped curve