将人们与食物联系起来:一个网络方法来缓解食物沙漠
Anna Sisk1, Kristen Rappazzo2, Tom Luben2
1Department of Mathematics, University of Tennessee, 1403 Circle Dr, 227 Ayres Hall Knoxville, TN 37916, USA.
Journal of transport & health
|May 24, 2024
概括
在美国各地的食物沙漠中,公共交通对杂货店的访问有很大差异. 改善公共交通网络可以帮助贫困地区的居民获得基本的粮食资源.
科学领域:
- 城市规划是城市规划.
- 公共卫生 公共卫生
- 运输科学 运输科学
背景情况:
- 粮食不安全影响了1380万美国人,不成比例地影响了弱势社区.
- 粮食沙漠的特点是贫困和有限的营养食物,与肥胖和糖尿病等健康问题有关.
- 公共交通是减轻食物沙漠影响的潜在解决方案.
研究的目的:
- 分析公共交通在将食物沙漠居民与杂货店连接起来的作用.
- 模拟和评估公共交通网络与五个美国地点的食物获取相关.
- 通过公共交通提供数据驱动的建议,以改善通过公共交通获得食物的机会.
主要方法:
- 使用食品沙漠,杂货店和公共交通系统的数据进行网络建模.
- 对五个代表性地点的网络中心性指标 (程度和接近度) 的分析.
- 评估在30分钟的运输时间内靠近公共汽车站和杂货店的可用性.
主要成果:
- 中心度的结果各不相同,其中一个位置在所有食物沙漠附近有一个公共汽车站,而另一个位置在附近没有.
- 接近的中心性揭示了显著的差异,一些食物沙漠有众多附近的商店,而另一些则在30分钟内没有商店.
- 罗利的44%的食物沙漠没有零杂货店,可以在30分钟的公共交通车程内到达.
结论:
- 公共交通网络在将食物沙漠居民连接到食物来源方面表现出显著的变化.
- 对公共交通基础设施的有针对性的改进可以提高贫困社区获得营养食品的机会.
- 提出了政策建议,以帮助城市领导人解决和消除食物沙漠.
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