Coupling Characteristics of the "Dual Chain" Network in the Biomedicine of the Yangtze River Delta and Its Optimization of Production Space
Received date: 2025-07-18
Revised date: 2025-11-03
Online published: 2026-02-12
Based on the headquarters' branch data and patent cooperation data, this paper constructs the spatial correlation network of the biomedical industry chain and innovation chain (hereinafter referred to as "dual chains") in the Yangtze River Delta, uses the multivariate network coupling model to identify its coupling characteristics, and introduces the weighted link between specific cities through the system to promote the production spatial correlation network to approach the Pareto optimal state. The results show that: 1) In terms of spatial pattern, the industrial chain presents a strong triangle linkage of the "Shanghai-Jiangsu-Zhejiang", while the innovation chain shows a unipolar leading "core-edge" structure taking Shanghai as the core. 2) In terms of the coupling characteristics, weak coupling is dominant within the industrial chain, especially in the manufacturing of APIs and preparations. The strong coupling characteristics within the innovation chain are significant, but the technical innovation barriers are still high. In terms of the inter-chain coupling of "dual chains", the upstream basic research is disconnected from the innovation of raw materials, there are "three low" bottlenecks in the midstream clinical transformation and device autonomy, and the efficiency of downstream market access and capacity allocation is not high. 3) The optimization path simulation reveals that improving the internal coupling of the innovation chain is the key to the gain of network efficiency. Industrial collaboration and innovation integration need to be promoted in stages, while the spiral dimension of dual chain conjugation needs to continue to strengthen the link cultivation mode of "supporting the strong with the weak", especially the coupling strength of the finished drug link in the middle reaches of the "dual chains".
XIONG Ziyang , PENG Chong . Coupling Characteristics of the "Dual Chain" Network in the Biomedicine of the Yangtze River Delta and Its Optimization of Production Space[J]. Economic geography, 2026 , 46(1) : 141 -150 . DOI: 10.15957/j.cnki.jjdl.2026.01.014
图2 长三角生物医药产业链与创新链本地化空间行为对比Fig.2 Comparison of localization spatial behavior between the biomedical industry chain and innovation chain in the Yangtze River Delta |
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