市中心
可行走性
空气污染
污染
环境科学
地理
环境规划
建筑环境
土木工程
工程类
生态学
生物
考古
作者
Yehua Dennis Wei,Yangyi Wu,Weiye Xiao,Ivis García,Ming Wen
标识
DOI:10.1016/j.jth.2023.101686
摘要
Walkability is an essential concern in urban and public policy, as it is highly related to public health, social equity, and climate change. This paper examines the impacts of urban space and air pollution on walking behaviors across census block groups in Salt Lake County (SLCo), Utah, including walking trip origins, destinations, and paths. Local Moran's I index is applied to capture the spatial clustering of walking behaviors. Non-spatial and spatial generalized linear models based on the quasi-Poisson function were then comparatively constructed to explore the relationships between urban form, air pollution, and walking behavior, using walking time and frequency as dependent variables. We found that downtown Salt Lake City was the main place for walking activities, and more walking activities occurred in eastern SLCo than in the western part, while the western part has a higher concentration of minority populations. Compact development may promote local walking behavior, but types of mixed land use matter: while job mixture was a catalyst for walking, job-housing mixture was not. Concerning the role of air pollution, particulate matter and volatile organic compounds significantly reduced the length of walks. However, taking frequent short walks might further expose people to pollutants such as ammonia and sulfur oxides in urban centers. This study explored the intra-urban relationships between urban form, air pollution, and walkability. Air pollution is a critical concern for walkability. Promoting compact development alone is insufficient; efforts should also be made to improve job mixture, reduce air pollution, and, more broadly, promote polycentric development.
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