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The aim is to evaluate spatial equity in green-space provision linked to urban morphology across major Chinese cities.

July 29, 2026ForestsOpen Access

Spatial Equity of Green-Space Provision in Chinese Megacities: Nonlinear Associations with Urban Morphology Across Three Temporal Snapshots (2015–2025)

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The aim is to evaluate spatial equity in green-space provision linked to urban morphology across major Chinese cities.
Analyzed high-resolution remote-sensing data from 2015, 2020, and 2025.
Used the Gini coefficient and pixel-level cumulative green-space provision index for inequality assessment.
Employed XGBoost and SHAP for nonlinear model analysis of association with urban morphology.
Beijing showed the largest increase in green-space inequality (Gini coefficient), opposite to Chengdu's improvement.
The green-space provision index increased fastest in Tianjin, while Beijing saw a decline.
Urban form demonstrated nonlinear associations with green-space indices, influenced mainly by building density.

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Examines green-space equity in seven Chinese megacities, highlighting nonlinear urban morphology impacts and implications for governance.

Wu et al. (2026) studied this question.

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