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原文传递 Effect of Urban Structure on PM_(2.5) in China: A Multiscale Landscape Analysis of 362 Cities

题名：	Effect of Urban Structure on PM_(2.5) in China: A Multiscale Landscape Analysis of 362 Cities
正文语种：	eng
作者：	He, Qingsong;Rao, Yingxue;Dai, Jingyi;Dai, Deyi;Ou, Guoliang
作者单位：	Huazhong Univ Sci & Technol Coll Publ Adm 1037 Luoyu Rd Wuhan 430074 Hubei Peoples R China;South Cent Univ Nationalities Coll Publ Adm Wuhan 430074 Hubei Peoples R China\|South Cent Univ Nationalities Res Ctr Hubei Ethn Minor Areas Econ & Social Dev Wuhan 430074 Hubei Peoples R China;Huazhong Univ Sci & Technol Sch Environm Sci & Engn 1037 Luoyu Rd Wuhan 430074 Hubei Peoples R China;Hubei Univ Econ Sch Business Adm Wuhan 430205 Hubei Peoples R China;Shenzhen Polytech Sch Construct & Environm Engn Shenzhen 518057 Peoples R China
关键词：	Urban polycentricity;Urban growth patterns;Spatial regression;PM2 5;Chinese cities
摘要：	Rapid urbanization adversely impacts urban air quality, impacting human health and the ecological environment. However, few studies have systematically explored air quality from the perspective of urban structural evolution. This can be done using two scales: one focusing on microscopic patches and one focusing on the macroscopic built-up area. Based on polycentricity at a city scale, urban growth patterns at a patch scale, and other natural and socioeconomic data for 362 cities in China, this study applied spatial regression models to quantify the impact of urban structure on PM2.5. The PM2.5 data were downloaded from the NASA Earth Observing System Data and Information System (EOSDIS) data center. The results show the following: (1) at a city scale, the polycentricity index had a significant and negative relationship with PM2.5, the development of polycentric cities supports improvements in air quality; (2) at a patch scale, three urban growth patterns (edge-expansion, outlying, and infilling) all significantly and negatively impact PM2.5. Urban growth continues to increase PM2.5 pollution in China; and (3) road density, the built-up area, population density, land-use mix, and other control variables have an influence on the PM2.5 concentration, and this study verified the existence of a scale effect. In addition, considering the different urban development trajectories of developed and developing countries, this study makes targeted recommendations for urban managers wanting to make reasonable development policies. In general, quantifying the relationship between urban structure and PM2.5 helps provide a scientific basis for city planners and managers to optimize urban layouts.
出版年：	2022
期刊名称：	Journal of Urban Planning and Development
卷：	148
期：	2
页码：	05022010.1-05022010.13