Research On The Impact Of High-speed Railway On China's Multipolar Growth Pattern

The multi-polar growth pattern is a spatial organization pattern in which two or more growth poles interact in the region and coordinate with each other.High-speed railway is a new factor affecting the change of multi-polar growth pattern.With the continuous development of the highspeed railway network,its influence on China's multi-polar growth pattern is increasing.This paper is based on the multi-polar growth pattern consisting of the seven growth poles of the Bohai Sea,the Yangtze River Delta,the Pearl River Delta,the Central Plains,the Guanzhong,the middle reaches of the Yangtze River and the Chengyu in the book "Multipolar Network Space Development Pattern" by Qin Chenglin,Jia Shanming and others.This paper uses DID model,gravity model,social network analysis method,etc.,to study the impact of high-speed railway on China's multi-polar growth pattern.The results of this paper show that,first,the high-speed railway between the seven growth poles and the inner city of the growth pole has initially formed a network shape,and a complete high-speed railway network has been formed between the growth poles of the three eastern coasts,but the construction of high-speed railway between Guanzhong and Chengyu is not perfect;the frequency structure of the high-speed railway in the Pearl River Delta,the middle reaches of the Yangtze River and the Bohai Sea growth pole needs to be adjusted;The density of the high-speed railway network within the two western growth poles of Guanzhong and Chengyu is significantly lower than the other five growth poles,and they are still on the edge of the national high-speed railway network.Second,The high-speed railway significantly has improved the relative position of the Chengyu in China's accessibility pattern,but the relative position of the Guanzhong has not been significantly improved;The high-speed railway has the highest average increase in economic linkages between central city of Guanzhong and other cities in the country,and the chengyu is the second highest.The high-speed railway has led to a significant reduction in the economic linkage between the two western growth poles of Chengyu and Guanzhong and other growth poles,but has led to the equalization of the economic linkages of the other five growth poles.Third,among the coastal growth poles,the high-speed railway has the most significant effect on the economic growth of the Pearl River Delta,the Yangtze River Delta is the second highest,and the effect of the Bohai Sea is the weakest.Among the growth poles in the mainland,high-speed railway has the most significant effect on the economic growth of Chengyu,the growth of Guanzhong is the second highest,while the Central Plains is the weakest.The promotion of the growth of the two western regions of Guanzhong and Chengyu is higher than that of the other five growth poles.Thus it can be seen,with the continuous improvement of China's high-speed railway,the impact of high-speed railway on China's multi-polar growth pattern has been highlighted.On the one hand,the construction of high-speed railway provides conditions for the growth poles of the country to participate in the formation of the multi-polar growth pattern,while strengthening the economic ties among the growth poles cities,and significantly enhancing the relative position of the two western growth poles in China's multi-polar growth pattern;On the other hand,the construction of high-speed railway significantly improves the economic growth level of the growth pole cities,and the promotion of the two growth pole cities in the western region is higher than that of other growth poles.It effectively narrows the economic gap between cities and promotes the coordinated development of the overall economy of our country.