Journal
JOURNAL OF INNOVATION & KNOWLEDGE
Volume 8, Issue 1, Pages -Publisher
ELSEVIER ESPANA
DOI: 10.1016/j.jik.2023.100306
Keywords
Technological diversification; Technological specialization; High-speed rail; Innovation; Knowledge spillovers
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By using Chinese city-level panel data, this study explores the impact of China's high-speed rail (HSR) connection on technological diversity. The results show that HSR connection leads to a decrease in technological diversity, especially in core cities and cities along the four longest HSR lines. It is suggested that HSR connection promotes technological specialization instead of diversification and spurs intra-industry knowledge spillovers rather than inter-industry knowledge spillovers.
Technological diversification and specialization have important roles in explaining volatility, innovation, income inequality, exports, and related concerns; however, the relationships between transportation improvement and technological diversification and specialization remains unexplored. Using Chinese citylevel panel data, we investigate the impact of China's high-speed rail (HSR) connection on technological diversity using the difference-in-differences method and instrumental variable regressions. The results demonstrate that HSR connection leads to reductions in technological diversity, particularly in core cities, cities along the four longest HSR lines, and cities that were initially diversified. The findings indicate that HSR connection is conducive to technological specialization rather than diversification, offering new insights for understanding the relationship between transportation improvement and innovation and determining that HSR connection spurs intra-industry knowledge spillovers more than inter-industry knowledge spillovers. (c) 2023 The Authors. Published by Elsevier Espana, S.L.U. on behalf of Journal of Innovation & Knowledge. This (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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