Assessing Interannual Urbanization of China’s Six Megacities Since 2000
As a large and populous developing country, China has entered the rapid urbanization stage since 2000. Until 2018, China has accounted for nearly 1/5 of global megacities. Understanding their urbanization processes is of great significance. Given the deficiencies of existing research, this study exp...
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doaj-62b7c684209249a6a2ba20b7916e81562020-11-25T01:04:30ZengMDPI AGRemote Sensing2072-42922019-09-011118213810.3390/rs11182138rs11182138Assessing Interannual Urbanization of China’s Six Megacities Since 2000Sisi Yu0Zengxiang Zhang1Fang Liu2Xiao Wang3Shunguang Hu4Aerospace information research institute, Chinese Academy of Sciences, Beijing 100101, ChinaAerospace information research institute, Chinese Academy of Sciences, Beijing 100101, ChinaAerospace information research institute, Chinese Academy of Sciences, Beijing 100101, ChinaAerospace information research institute, Chinese Academy of Sciences, Beijing 100101, ChinaAerospace information research institute, Chinese Academy of Sciences, Beijing 100101, ChinaAs a large and populous developing country, China has entered the rapid urbanization stage since 2000. Until 2018, China has accounted for nearly 1/5 of global megacities. Understanding their urbanization processes is of great significance. Given the deficiencies of existing research, this study explored the interannual urbanization process of China’s six megacities during 2000−2018 from four aspects, namely, the basic characteristics of urban land expansion, expansion types, cotemporary evolution of urban land−population−economy, and urbanization effects on the local environment. Results indicated that (1) urban lands in China’s six megacities increased by 153.27%, with distinct differences across megacities; (2) all of six megacities experienced the expansion processes from high-speed to low-speed, but they varied greatly in detail; (3) the speeds of urban land expansion in China’s megacities outpaced the population growth but lagged behind in GDP increase; and (4) urbanization has triggered an environmental crisis, which is represented by the decline in vegetation coverage and the increase in land surface temperature in newly expanded urban lands. This study enriched the content of urbanization, supplemented the existing materials of megacities, and provided a scientific reference for designing rational urban planning.https://www.mdpi.com/2072-4292/11/18/2138megacitiesChinaurbanizationcotemporary evolutionenvironment |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sisi Yu Zengxiang Zhang Fang Liu Xiao Wang Shunguang Hu |
spellingShingle |
Sisi Yu Zengxiang Zhang Fang Liu Xiao Wang Shunguang Hu Assessing Interannual Urbanization of China’s Six Megacities Since 2000 Remote Sensing megacities China urbanization cotemporary evolution environment |
author_facet |
Sisi Yu Zengxiang Zhang Fang Liu Xiao Wang Shunguang Hu |
author_sort |
Sisi Yu |
title |
Assessing Interannual Urbanization of China’s Six Megacities Since 2000 |
title_short |
Assessing Interannual Urbanization of China’s Six Megacities Since 2000 |
title_full |
Assessing Interannual Urbanization of China’s Six Megacities Since 2000 |
title_fullStr |
Assessing Interannual Urbanization of China’s Six Megacities Since 2000 |
title_full_unstemmed |
Assessing Interannual Urbanization of China’s Six Megacities Since 2000 |
title_sort |
assessing interannual urbanization of china’s six megacities since 2000 |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2019-09-01 |
description |
As a large and populous developing country, China has entered the rapid urbanization stage since 2000. Until 2018, China has accounted for nearly 1/5 of global megacities. Understanding their urbanization processes is of great significance. Given the deficiencies of existing research, this study explored the interannual urbanization process of China’s six megacities during 2000−2018 from four aspects, namely, the basic characteristics of urban land expansion, expansion types, cotemporary evolution of urban land−population−economy, and urbanization effects on the local environment. Results indicated that (1) urban lands in China’s six megacities increased by 153.27%, with distinct differences across megacities; (2) all of six megacities experienced the expansion processes from high-speed to low-speed, but they varied greatly in detail; (3) the speeds of urban land expansion in China’s megacities outpaced the population growth but lagged behind in GDP increase; and (4) urbanization has triggered an environmental crisis, which is represented by the decline in vegetation coverage and the increase in land surface temperature in newly expanded urban lands. This study enriched the content of urbanization, supplemented the existing materials of megacities, and provided a scientific reference for designing rational urban planning. |
topic |
megacities China urbanization cotemporary evolution environment |
url |
https://www.mdpi.com/2072-4292/11/18/2138 |
work_keys_str_mv |
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