Special Column: Regional and Urban Spatial Reconstruction under the Influence of Flows
SHAN Zhuoran, XU Miao, YUAN Man
With the in-depth development of a new round of scientific and technological revolution and industrial transformation, intelligent manufacturing equipment has become an important force to promote the high-quality development of industry, and the study of its production and supply relationship is of great significance to optimize the distribution of new quality productivity.Based on the data of core enterprises and suppliers in China's intelligent manufacturing equipment industry from 2010 to 2023, this study explored the spatial change characteristics of production-supply relationships of China's intelligent manufacturing equipment industry from three dimensions: production and supply linkage, production and supply network, and production and supply cluster by Pareto analysis and k-kernel analysis. The results are as follows: 1) The number and intensity of enterprise connections were increasing, and 700-1800 km was the general distance of production and supply connection of intelligent manufacturing equipment enterprises. The pattern of intercity production and supply links evolved from the shape of dual core radiation, triangle, to bow and arrow in China, and there were similarities and differences in the dominant flow of intercity production and supply links. The strong production and supply links between enterprises gradually shifted from intracity to intercity, and the number of export-oriented cities increased rapidly. 2) For more than a decade, the structure of the intercity production and supply network of China's intelligent manufacturing equipment industry has become increasingly compact and complex. After 2015, the city hierarchy of the intercity production and supply network has moved from a "pyramid" to a flat structure. 3) The number of production and supply clusters of China's intelligent manufacturing equipment industry has increased from 21 to 29. The production and supply cluster of the Yangtze River Delta has always maintained a leading position, the production and supply clusters of the Pearl River Delta, the Beijing-Tianjin-Hebei region, and Shandong Peninsula have developed steadily, and the status of the production and supply clusters in the middle reaches of the Yangtze River and the Chengdu-Chongqing region have significantly improved. The pattern of association of node cities within the clusters can be divided into five types: Single center, one core and multiple subordinates, two cores and multiple subordinates, multi-center, and low-level equilibrium, and the node association patterns within the clusters have showed spatiotemporal heterogeneity from 2010 to 2023.