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寻找食物:运用地理信息系统测量食物获取情况中的问题与挑战

Finding food: Issues and challenges in using Geographic Information Systems to measure food access.

作者信息

Forsyth Ann, Lytle Leslie, Riper David Van

机构信息

Cornell University.

出版信息

J Transp Land Use. 2010 Apr 1;3(1):43-65. doi: 10.5198/jtlu.v3i1.105.

Abstract

A significant amount of travel is undertaken to find food. This paper examines challenges in measuring access to food using Geographic Information Systems (GIS), important in studies of both travel and eating behavior. It compares different sources of data available including fieldwork, land use and parcel data, licensing information, commercial listings, taxation data, and online street-level photographs. It proposes methods to classify different kinds of food sales places in a way that says something about their potential for delivering healthy food options. In assessing the relationship between food access and travel behavior, analysts must clearly conceptualize key variables, document measurement processes, and be clear about the strengths and weaknesses of data.

摘要

人们为了寻找食物会进行大量的出行。本文探讨了使用地理信息系统(GIS)来衡量食物获取情况时所面临的挑战,这在出行和饮食行为研究中都很重要。它比较了现有的不同数据来源,包括实地调查、土地利用和地块数据、许可信息、商业名录、税收数据以及在线街景照片。它提出了对不同类型的食品销售场所进行分类的方法,以此说明它们提供健康食品选择的潜力。在评估食物获取与出行行为之间的关系时,分析人员必须清晰地概念化关键变量,记录测量过程,并清楚数据的优缺点。

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