Adkins Arlie, Makarewicz Carrie, Scanze Michele, Ingram Maia, Luhr Gretchen
Arlie Adkins is an assistant professor of planning in the School of Landscape Architecture and Planning at the University of Arizona. Carrie Makarewicz is an assistant professor in the College of Architecture and Planning at the University of Colorado, Denver. Michele Scanze is a recent graduate of the planning master's program at the University of Arizona. Maia Ingram is the codirector of the Arizona Prevention Research Center at the University of Arizona. Gretchen Luhr is a research associate at the Institute on Aging at Portland State University.
J Am Plann Assoc. 2017;83(3):296-314. doi: 10.1080/01944363.2017.1322527. Epub 2017 Jul 12.
Supportive built environments for walking are linked to higher rates of walking and physical activity, but little is known about this relationship for socioeconomically disadvantaged (e.g., low-income and racial/ethnic minority) populations. We review 17 articles and find that most show that the built environment has weaker effects on walking and physical activity for disadvantaged than advantaged groups. Those who lived in supportive built environments walked more and were more physically active than those who did not, but the effect was about twice as large for advantaged groups. We see this difference because disadvantaged groups walked more in unsupportive built environments and less in supportive built environments, though the latter appears more influential.
Defining walkability entirely in built environment terms may fail to account for important social and individual/household characteristics and other non-built environment factors that challenge disadvantaged groups, including fear of crime and lack of social support. Planners must be sensitive to these findings and to community concerns about gentrification and displacement in the face of planned built environment improvements that may benefit more advantaged populations. We recommend five planning responses: Recognize that the effects of the built environment may vary by socioeconomics; use holistic approaches to improve walkability; expand walkability definitions to address a range of social and physical barriers; partner across agencies, disciplines, and professions; and evaluate interventions in different socioeconomic environments.
问题、研究策略与发现:适宜步行的建成环境与较高的步行率和身体活动水平相关,但对于社会经济弱势群体(如低收入群体以及少数族裔)而言,这种关系鲜为人知。我们回顾了17篇文章,发现大多数研究表明,建成环境对弱势群体的步行和身体活动的影响比对优势群体的影响要弱。生活在适宜步行的建成环境中的人比那些没有生活在这种环境中的人步行更多,身体活动也更多,但这种影响在优势群体中大约是弱势群体的两倍。我们看到这种差异是因为弱势群体在不适宜步行的建成环境中步行更多,而在适宜步行的建成环境中步行较少,尽管后者的影响力似乎更大。
完全从建成环境的角度来定义适宜步行性可能无法考虑到重要的社会以及个人/家庭特征和其他非建成环境因素,这些因素对弱势群体构成挑战,包括对犯罪的恐惧和缺乏社会支持。面对可能使更具优势的人群受益的建成环境改善计划,规划者必须对这些发现以及社区对绅士化和人口迁移的担忧保持敏感。我们建议采取五种规划应对措施:认识到建成环境的影响可能因社会经济状况而异;采用整体方法来提高适宜步行性;扩大适宜步行性的定义以应对一系列社会和物理障碍;跨机构、学科和专业进行合作;并评估在不同社会经济环境中的干预措施。