Street trees and equity: evaluating the spatial distribution of an urban amenity
Street trees and equity: evaluating the spatial distribution of an urban amenity
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DOI：
10.1068/a41236
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发表时间：
2009-11-01
影响因子：
4.2
通讯作者：
Chakraborty, Jayajit
中科院分区：
文献类型：
--
作者：
Landry, Shawn M.;Chakraborty, Jayajit
虽然城市缺陷和污染源在环境正义研究中受到相当多的关注，但很少有研究考察与理想土地用途分配相关的社会空间不平等。在本文中，我们通过研究行道树对环境公平的影响来解决这一局限性，行道树是一种重要的公共资助设施，为城市居民提供了多种直接和间接的好处。具体目标是确定美国佛罗里达州坦帕市公共路权树的空间分布在种族、民族、收入和住房保有权方面是否公平。我们寻求通过几种方法创新来扩展对城市设施公平分析的研究，包括：(a) 考虑城市土地利用的异质性； (b) 利用高分辨率遥感技术量化特定地块的树木覆盖率； (c) 使用多元回归模型来控制数据内的空间依赖性。结果表明，在非裔美国人、低收入居民和租房者比例较高的社区中，公共通行权上的树木覆盖比例显着较低，从而支持了不平等假说。这些发现对地方公共投资和政策战略具有重要影响。
While urban disamenities and pollution sources have received considerable attention in environmental justice research, few studies have examined sociospatial inequities associated with the distribution of desirable land uses. In this paper we focus on addressing this limitation by investigating the environmental equity implications of street trees-an important publicly financed amenity that provides several direct and indirect benefits to urban residents. The specific objective was to determine if the spatial distribution of public right-of-way trees is equitable with respect to race and ethnicity, income, and housing tenure in the city of Tampa, Florida, USA. We seek to extend research on equity analysis of urban amenities through several methodological innovations, including: (a) accounting for the heterogeneity of urban land use; (b) utilizing high-resolution remote sensing techniques to quantify parcel-specific tree cover; and (c) using multivariate regression models that control for spatial dependence within the data. The results support the inequity hypothesis by indicating a significantly lower proportion of tree cover on public right-of-way in neighborhoods containing a higher proportion of African-Americans, low-income residents, and renters. These findings have important implications for local public investment and policy strategies.