PROGRESS IN GEOGRAPHY ›› 2023, Vol. 42 ›› Issue (5): 852-866.doi: 10.18306/dlkxjz.2023.05.003

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Dual-core separation structure of the Lanzhou-Xining urban agglomeration: Investment network of private enterprises under the background of regional economic integration

ZHOU Heng1(), YANG Yongchun1,2,*()   

  1. 1. College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
    2. Key Laboratory of West China's Environmental Systems of the Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • Received:2022-10-31 Revised:2023-03-12 Online:2023-05-28 Published:2023-05-24
  • Contact: YANG Yongchun;
  • Supported by:
    National Natural Science Foundation of China(41971198);The Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK1005)


Regional economic integration has become a necessary path to promote regional high-quality development in China, but relevant studies from the perspective of private enterprise investment are rare. Using statistical analysis and social network analysis methods, we analyzed the process of regional economic integration through the evolution of private enterprise investment network in the Lanzhou-Xining (Lan-Xi) urban agglomeration from 2013 to 2021, and explored the mechanism of change. The study showed that: 1) The Lan-Xi urban agglomeration was in the middle and late stage of industrialization, but the private enterprise investment network still showed an obvious inter-provincial "dual-core separation" structure, with a relatively high level of integration in Qinghai Province, and there were large differences in the inter-provincial investment behavior of different industries within the urban agglomeration. 2) The formation of the dual-core separation structure of the private enterprise investment network was mainly influenced by the current development stage of the region, and the provincial capital cities played a dominant role in this polarization, leading to extremely weak inter-provincial investment ties. 3) The administrative region economy and institutional thickness exerted a deterrent effect on the inter-provincial investment of private enterprises through external environment and internal decision making, respectively. Based on the above conclusions, starting from the low level of regional economic integration in the Lan-Xi Urban Agglomeration, this paper puts forward relevant policy recommendations to promote the formation of inter-provincial complementary regional economic layout with the goal of high-quality development.

Key words: regional economic integration, private enterprises, investment network, dual-core separation structure, Lanzhou-Xining urban agglomeration