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This study aims to assess spatial linkages and their role in achieving functional integration for sustainable metropolitan development in Beijing.

June 4, 2026SustainabilityOpen Access

Spatial Linkage Networks and Spatial–Functional Urban Integration for Sustainable Metropolitan Development: Evidence from the Beijing Metropolitan Area

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This study aims to assess spatial linkages and their role in achieving functional integration for sustainable metropolitan development in Beijing.
Utilized SDGSAT-1 nighttime light data for metropolitan boundary delineation.
Employed transport accessibility analysis and constructed comprehensive spatial linkage networks.
Evaluated spatial-functional urban integration at the township/subdistrict scale across multiple dimensions.
Beijing's main urban center extends beyond traditional boundaries, indicating a need for re-evaluation of metropolitan delineation.
Spatial-functional integration is primarily advancing along key corridors, revealing a hierarchical pattern in urban connectivity.
Cross-boundary linkages have developed, with a dominant influence of Beijing’s core functions supported by nearby Tianjin and Hebei regions.

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Randomized trial demonstrates spatial-functional integration in Beijing's metropolitan area, suggesting pathways for sustainable growth.

Zhang et al. (2026) studied this question.

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