A comparative study of spatiotemporal patterns of urban expansion in six major cities of the Yangtze River Delta from 1980 to 2015

Introduction: China has been experiencing dramatic urbanization in parallel with its economic boom over the past three to four decades. The Yangtze River Delta (YRD), as the most important engine in the Chinese economy, has pioneered in the rapid urbanization road of China since the late 1970s. We q...

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Autores principales:	Chenyu Fang, Shuqing Zhao
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2018
Materias:	Urban growth type landscape metrics remote sensing buffer analysis directional variability urban agglomeration Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/7f94d096ff94413e938a87da7d916fcc
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spelling	oai:doaj.org-article:7f94d096ff94413e938a87da7d916fcc2021-12-02T17:35:24ZA comparative study of spatiotemporal patterns of urban expansion in six major cities of the Yangtze River Delta from 1980 to 20152096-41292332-887810.1080/20964129.2018.1469960https://doaj.org/article/7f94d096ff94413e938a87da7d916fcc2018-04-01T00:00:00Zhttp://dx.doi.org/10.1080/20964129.2018.1469960https://doaj.org/toc/2096-4129https://doaj.org/toc/2332-8878Introduction: China has been experiencing dramatic urbanization in parallel with its economic boom over the past three to four decades. The Yangtze River Delta (YRD), as the most important engine in the Chinese economy, has pioneered in the rapid urbanization road of China since the late 1970s. We quantified and compared the spatiotemporal patterns of urban expansion in six major cities in the YRD urban agglomeration between 1980 and 2015. Outcomes: We found that Shanghai, Nanjing, Hangzhou, Wuxi, Suzhou and Ningbo expanded by an annual rate of 5.4%, 5.9%, 9.6%, 7.4%, 6.3% and 8.1% from 1980 to 2015, suggesting larger cities generally possess lower growth rates. Spatiotemporal patterns of urban expansion are defined by multiple forces including physical conditions and urban planning and policy. The urbanization processes in Shanghai, Nanjing and Hangzhou generally conformed with the diffusion-coalescence theory as the number of patches (NP) and patch density (PD) of urbanized land peaked and the proportion of leapfrogging urban growth type began to decrease around 2005, which separating their urbanization processes into diffusion phase before and coalescence phase after. In contrast, Suzhou, Wuxi and Ningbo is either in the diffusion or in the transition phase from diffusion to coalescence, not showing temporal dynamics of diffusion-coalescence phase across the study period, which might be related to the fact that the urban areas in these three cities were more dispersive in space than that of other cities. Conclusions: These spatially explicit findings are the fundamental cornerstone to understand the characteristics, drivers and consequences of urban expansion in the urban agglomerations, and then detect the feasibility of general urbanization theories and further advance in-depth theoretical understanding to support a sustainable urban future.Chenyu FangShuqing ZhaoTaylor & Francis GrouparticleUrban growth typelandscape metricsremote sensingbuffer analysisdirectional variabilityurban agglomerationEcologyQH540-549.5ENEcosystem Health and Sustainability, Vol 4, Iss 4, Pp 95-114 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Urban growth type landscape metrics remote sensing buffer analysis directional variability urban agglomeration Ecology QH540-549.5
spellingShingle	Urban growth type landscape metrics remote sensing buffer analysis directional variability urban agglomeration Ecology QH540-549.5 Chenyu Fang Shuqing Zhao A comparative study of spatiotemporal patterns of urban expansion in six major cities of the Yangtze River Delta from 1980 to 2015
description	Introduction: China has been experiencing dramatic urbanization in parallel with its economic boom over the past three to four decades. The Yangtze River Delta (YRD), as the most important engine in the Chinese economy, has pioneered in the rapid urbanization road of China since the late 1970s. We quantified and compared the spatiotemporal patterns of urban expansion in six major cities in the YRD urban agglomeration between 1980 and 2015. Outcomes: We found that Shanghai, Nanjing, Hangzhou, Wuxi, Suzhou and Ningbo expanded by an annual rate of 5.4%, 5.9%, 9.6%, 7.4%, 6.3% and 8.1% from 1980 to 2015, suggesting larger cities generally possess lower growth rates. Spatiotemporal patterns of urban expansion are defined by multiple forces including physical conditions and urban planning and policy. The urbanization processes in Shanghai, Nanjing and Hangzhou generally conformed with the diffusion-coalescence theory as the number of patches (NP) and patch density (PD) of urbanized land peaked and the proportion of leapfrogging urban growth type began to decrease around 2005, which separating their urbanization processes into diffusion phase before and coalescence phase after. In contrast, Suzhou, Wuxi and Ningbo is either in the diffusion or in the transition phase from diffusion to coalescence, not showing temporal dynamics of diffusion-coalescence phase across the study period, which might be related to the fact that the urban areas in these three cities were more dispersive in space than that of other cities. Conclusions: These spatially explicit findings are the fundamental cornerstone to understand the characteristics, drivers and consequences of urban expansion in the urban agglomerations, and then detect the feasibility of general urbanization theories and further advance in-depth theoretical understanding to support a sustainable urban future.
format	article
author	Chenyu Fang Shuqing Zhao
author_facet	Chenyu Fang Shuqing Zhao
author_sort	Chenyu Fang
title	A comparative study of spatiotemporal patterns of urban expansion in six major cities of the Yangtze River Delta from 1980 to 2015
title_short	A comparative study of spatiotemporal patterns of urban expansion in six major cities of the Yangtze River Delta from 1980 to 2015
title_full	A comparative study of spatiotemporal patterns of urban expansion in six major cities of the Yangtze River Delta from 1980 to 2015
title_fullStr	A comparative study of spatiotemporal patterns of urban expansion in six major cities of the Yangtze River Delta from 1980 to 2015
title_full_unstemmed	A comparative study of spatiotemporal patterns of urban expansion in six major cities of the Yangtze River Delta from 1980 to 2015
title_sort	comparative study of spatiotemporal patterns of urban expansion in six major cities of the yangtze river delta from 1980 to 2015
publisher	Taylor & Francis Group
publishDate	2018
url	https://doaj.org/article/7f94d096ff94413e938a87da7d916fcc
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A comparative study of spatiotemporal patterns of urban expansion in six major cities of the Yangtze River Delta from 1980 to 2015

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