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Monitoring Three-Decade Expansion of China’s Major Cities Based on Satellite Remote Sensing Images

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School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China
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State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
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The Collaborative Innovation Center for Geospatial Technology, Wuhan 430079, China
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School of Urban Design, Wuhan University, Wuhan 430072, China
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Changjiang River Scientific Research Institute, Changjiang Water Resources Commission, Wuhan 430015, China
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Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(3), 491; https://doi.org/10.3390/rs12030491
Received: 15 December 2019 / Revised: 25 January 2020 / Accepted: 2 February 2020 / Published: 4 February 2020
(This article belongs to the Section Urban Remote Sensing)
As the largest developing country, China has experienced dramatic urban expansion since the “reform and opening-up” policy started at the end of the 1970s. In this paper, we monitor three decades of urban expansion in China’s 36 major cities, based on the spectral mixture analysis of remotely sensed satellite images. The results demonstrated that these major cities have expanded by 5.85 times from 1986 to 2015, with 15.51 km2 average expansion area per city per year. We found the urban expansion trajectories showed three different modes, i.e., exponential, linear and s-shaped, which were closely related to the city development level. In the old city zones, however, there was an interesting common tendency of the impervious surface area (ISA) first increasing and then decreasing, which could be largely attributed to the phenomenon of urban village reconstruction in China’s cities. Based on the Granger Causality Test (GCT), the interaction between urban ISA and Gross Domestic Product (GDP) per capita (GDPPC) suggested that the former was the driver of the latter. Meanwhile, taking the Yangtze River as the division between north and south China, there exists a north–south territorial differentiation for the interaction between ISA and total population at the year-end (TP). View Full-Text
Keywords: urbanization; satellite remote sensing; urban expansion trajectories; urban village; north-south differentiation urbanization; satellite remote sensing; urban expansion trajectories; urban village; north-south differentiation
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MDPI and ACS Style

Shen, Y.; Shen, H.; Cheng, Q.; Huang, L.; Zhang, L. Monitoring Three-Decade Expansion of China’s Major Cities Based on Satellite Remote Sensing Images. Remote Sens. 2020, 12, 491.

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