Assessment of spatial and socioeconomic disparities in urban green space accessibility based on a Physical Activity Diversity Index (PADI)

作者：Yunjing Hou, Yiming Liu, Yuxin Wu, Bo Zhang · 发表于：Ecological Indicators · 年份：2024 · DOI：10.1016/j.ecolind.2024.112478 · 被引用次数：9 · 研究领域：Urban Transport and Accessibility、Urban Green Space and Health、Physical Activity and Health

• Establish a Physical Activity Diversity Index (PADI). • Adjust accessibility assessment model based on PADI. • Accurately identifies areas severely lacking urban green spaces. • Considering PADI narrows the accessibility gap in certain areas. • Improving PADI helps mitigate socioeconomic disparities of accessibility. Urban green spaces (UGS) contribute to residents’ health by promoting physical activity. However, there are significant spatial and socioeconomic disparities in UGS accessibility, leading to unequal access to UGS benefits among residents. Current assessments of UGS accessibility often overlook the role of UGS in promoting physical activity. Additionally, the consideration of UGS components typically focuses on their quantity rather than diversity. In light of this, our study proposes an evaluation method for the Physical Activity Diversity Index (PADI) of UGS and revises the supply scale parameter in the Gaussian two-step floating catchment area (Ga2SFCA) model based on this index. Taking Harbin, China as an example, we measure UGS accessibility and explore its association with residents’ income levels using the bivariate Moran’s I and multiple linear regression models. Our findings indicate that a higher PADI can partially compensate for insufficient UGS area, thereby increasing accessibility in certain areas and alleviating the relative disadvantage of low-income groups in accessing UGS. Considering PADI can more accurately identify underserved areas, providi...