The 15-minute community life circle for older people: Walkability measurement based on service accessibility and street-level built environment – A case study of Suzhou, China

IF 6 1区 经济学 Q1 URBAN STUDIES Cities Pub Date : 2024-11-26 DOI:10.1016/j.cities.2024.105587
Zhonghui Jiang , Chunliang Wu , Hyungchul Chung
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Abstract

The 15-minute community life circle (15-min CLC) concept focuses on providing accessible services for older adults within a short walking distance. However, few studies have developed a comprehensive evaluation system of 15-min CLC walking accessibility for older people, and little is known about the effects of street-level environment characteristics and human perception on 15-min CLC. This study used the Baidu API and an optimized cumulative opportunity method to measure the 5-, 10-, and 15-min CLC walkability for older adults in Suzhou, China. Street-level characteristics and human perception scores, derived from street view semantic segmentation and deep learning, were incorporated into regression models to assess global and local effects on walkability. The results revealed that there was a significant spatial heterogeneity of CLC walkability in Suzhou. The 5- and 10-min CLCs were found lacking in facilities, particularly senior care services. The regression model showed a positive association between perceived safety and CLC walkability, while the proportion of street vegetation negatively affected walkability. The study suggests enhancing senior care, medical, and leisure facilities, especially within 10-min CLCs. Improving service integration in county-level cities and suburbs, and increasing street vegetation in older urban areas, could further enhance the walking environment for older adults.
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老年人 15 分钟社区生活圈:基于服务可达性和街道建筑环境的步行可达性测量--中国苏州案例研究
15 分钟社区生活圈(15-min CLC)概念的重点是在短距离步行范围内为老年人提供无障碍服务。然而,很少有研究对老年人 15 分钟社区生活圈的步行可达性进行全面的评估,而且人们对街道环境特征和人的感知对 15 分钟社区生活圈的影响也知之甚少。本研究使用百度 API 和优化的机会累积法测量了中国苏州老年人 5 分钟、10 分钟和 15 分钟 CLC 步行可达性。通过街景语义分割和深度学习得出的街道级别特征和人类感知分数被纳入回归模型,以评估对步行能力的整体和局部影响。研究结果表明,苏州的CLC步行能力存在明显的空间异质性。5分钟和10分钟的社区中心缺乏设施,尤其是养老服务设施。回归模型显示,安全感与社区中心步行能力呈正相关,而街道植被比例对步行能力有负面影响。研究建议加强养老、医疗和休闲设施的建设,尤其是在 10 分钟社区中心范围内。改善县级城市和郊区的服务整合,增加老城区的街道植被,可以进一步改善老年人的步行环境。
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来源期刊
Cities
Cities URBAN STUDIES-
CiteScore
11.20
自引率
9.00%
发文量
517
期刊介绍: Cities offers a comprehensive range of articles on all aspects of urban policy. It provides an international and interdisciplinary platform for the exchange of ideas and information between urban planners and policy makers from national and local government, non-government organizations, academia and consultancy. The primary aims of the journal are to analyse and assess past and present urban development and management as a reflection of effective, ineffective and non-existent planning policies; and the promotion of the implementation of appropriate urban policies in both the developed and the developing world.
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