Assessment of Urban Green Space Equity in Beijing’s Central Urban Villages: A Remote Sensing Perspective on Environmental Justice

Urban green space (GS) equity is crucial to achieving environmental justice. From the environmental justice perspective, this study focuses on the equity of GS in residential areas of urban disadvantaged groups, quantitatively assessing and comparing the fairness of GS usage between urban villages (UVs) and formal residential quarters (RQs). Using data on green space area, NDVI, and FVC, this study analyzes GS conditions across different buffer distances within the central urban area of Beijing. Statistical methods, including the Theil index, were employed to evaluate the equity of per capita green space, vegetation coverage, and vegetation conditions. Our findings reveal distinct spatial distribution patterns of internal and external GS characteristics between UVs and RQs. Additionally, while the internal GS equity in UVs is generally lower than in RQs, FVC equity demonstrates the opposite trend. Finally, intra-group inequity in both UVs and RQs is the dominant factor contributing to overall GS disparities in residential areas. This study establishes a comprehensive evaluation framework for analyzing GS availability, NDVI, and FVC equity in two types of residential communities. It provides a valuable reference for subsequent GS equity assessments and offers actionable recommendations for policymakers to prioritize improving GS equity in certain residential areas. By addressing gaps in environmental justice theory regarding urban GS, this study proposes a pragmatic and effective approach to enhancing GS equity in large, rapidly developing cities.