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Abstract

The Chengdu-Ya’an section of Sichuan-Tibet Railway (STR), which has already started operation, is taken as an example. First, we apply the weighted average travel time and gravity model to analyze the accessibility of the site cities and the economic link intensity among them, with visualization by ArcGIS. Then, we use the difference-in-differences model with panel data of three cities from 2018 to 2019 to test the impact of the Chengdu-Ya’an section on regional urbanization along the route. The results show that the opening of the Chengdu-Ya’an section has significantly improved the accessibility and economic link of areas along the line and promoted regional economic development and urbanization. It is expected that the opening of the entire line of STR will have more significant impacts, which requires continuous research and attention in the future.

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