Urban sprawl in a megaregion: A multiple spatial and temporal perspective

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Urban sprawl in a megaregion: A multiple spatial and temporal perspective
	Zhou, Weiqi ; Jiao, Min ; Yu, Wenjuan ; Wang, Jia
刊名	ECOLOGICAL INDICATORS
	2019-01
卷号	96 页码:54-66
关键词	Sprawl Moran's I Land consumption per capita Land use efficiency Scale Spatial pattern Beijing-Tianjin-Hebei urban megaregion
ISSN号	1470-160X
英文摘要	Numerous studies have been conducted to examine the characteristics of urban sprawl at multiple scales, ranging from neighborhood, to city, and metropolitan statistical area. However, few studies have investigated urban sprawl in a megaregion, particularly from a multiple spatial and temporal scale perspective. Focusing on the Beijing-Tianjin-Hebei (BTH) megaregion, one of the largest urban megaregion in China, we quantified the multiscale characteristics of urban sprawl, and how they changed by time, using a combination of density (land consumption per capita) and centrality (Moran's I coefficient of developed land) indicators. We found: (1) The BTH urban megaregion experienced rapid urban expansion during 1984-2015, with large variations in annual growth rates, and the two measures of sprawl among cities and counties. (2) Land consumption per capita in the megaregion had a clear increasing trend at all three levels, suggesting decreased density and land use efficiency, and thus increased urban sprawl. (3) In contrast, Moran's I coefficient had trends of increase at multiple scales, suggesting urban developed lands tended to become more clustered spatially. (4) Nonlinear relationships between the two measures of sprawl and the total area and proportional cover of developed lands at county level. Land consumption per capita first increased, and then decreased with the increase of the total area and proportional cover of developed lands, following the pattern of the reversed U shape curve. Similar patterns were found for Moran's I coefficient. Our results highlight the importance of quantifying urban sprawl at multiple temporal and spatial scales, using multi-dimensional indicators. Results from this study can enhance our understanding on the spatiotemporal characteristics of urban sprawl, and can provide important insights to inform public policy for urban growth management and planning.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42877]
专题	生态环境研究中心_城市与区域生态国家重点实验室
作者单位	1.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Res Ctr Ecoenvironm Sci, 18 Shuangqing Rd, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Weiqi,Jiao, Min,Yu, Wenjuan,et al. Urban sprawl in a megaregion: A multiple spatial and temporal perspective[J]. ECOLOGICAL INDICATORS,2019,96:54-66.
APA	Zhou, Weiqi,Jiao, Min,Yu, Wenjuan,&Wang, Jia.(2019).Urban sprawl in a megaregion: A multiple spatial and temporal perspective.ECOLOGICAL INDICATORS,96,54-66.
MLA	Zhou, Weiqi,et al."Urban sprawl in a megaregion: A multiple spatial and temporal perspective".ECOLOGICAL INDICATORS 96(2019):54-66.