| Nowadays,digital economy,service industry and trade in service have been mentioned in a number of documents and policies related to development and governance globally.It is clear that their strategic significance has been looming day by day.As a new form of production factors,information and digital elements play a fantastic role in promoting the value added in trade of all industries.Digital technology makes the circulation and application of data information more smoot hly in the production process.Throughout the world,many countries have actively deployed for the development of digital technology and digital economy,which shows the importance of digital economy and digitalization investment to a country.At the same time,with the continuous advancement of globalization,the status of service industry and trade in service in is becoming more and more important globally.In the future,digital economy and trade in services are bound to be more integrated,but is such i ntegration necessary? Will digitalization input do good to production and trade in service? To answer these questions,I tested them from empirical perspective.Firstly,based on Metcalf’s law and Baumol’s two sector unbalanced growth macroeconomic model,this paper discussed the influence mechanism of digital investment on the added value of service trade export from three aspects: network connection effect,human capital investment and value creation effect.Then,this paper used a variety of theories to predict the impact of digital input on the added value of domestic service exports.According to the relevant papers and official reports issued by institutes and government departments,this paper have selected the industries and the index to represent the level of digital input,calculated the outcomes.Finally,based on the data of 64 countries,this paper analyzed the digital input and DVAR level among 2003 to 2018 from different dimensions,and made an empirical analysis by Using Stata,and compares the results with commodity exports.It is found that:(1)countries developed in manufacturing tend to be competitive in service industry and export.Service industry is related to manufacturing to some extent.(2)Input digitalization is linearly affecting the domestic value added rate in export of service and manufacturing industry,and both of them show positive results,but the coefficient of input digitalization on service export is not as high as that on manufacturing.(3)Due to the effect of the conn ecting,the way of influencing a country’s investment in human capital and technological innovation,input digitalization is able to affect domestic added value in exports.(4)The coefficient of input digitalization in high-tech service industry is lower than that in low-tech service industry.The role of digital elements in high-tech service industry needs to be improved.(5)The core elements of digitalization,that is,the well-known big data,cloud computing and 5th-Generation technology,have a stronger impact on the service industry.For the results,I have put forward the following three suggestions to solve the problems:(1)to improve the economic structure,government ought to raise more fund to invest in R&D of manufacturing,encourage innovation and lead more resources to work for it,so that better cultivate the country’s comparative advantage in high value added manufacturing industries,and improve the structure of industrial and export;(2)to increase investment in human resources,so that can digitalization technologies can better integrate into the production process;(3)to improve the domestic service supply chain and coordination,to reduce the dependence of imported intermediate inputs,especially those with high technology content. |
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