Impact of Power on Uneven Development: Evaluating Built-Up Area Changes in Chengdu Based on NPP-VIIRS Images (2015–2019)

Long Liu, Zhichao Li, Xinyi Fu, Xuan Liu, Zehao Li and Wenfeng Zheng
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Long Liu: School of Political Science and Public Administration, East China University of Political Science and Law, Shanghai 200042, China
Zhichao Li: School of International and Public Affairs, Shanghai Jiao Tong University, Shanghai 200240, China
Xinyi Fu: School of Public Affairs and Administration, University of Electronic Science and Technology of China, Chengdu 611731, China
Xuan Liu: School of Public Affairs and Administration, University of Electronic Science and Technology of China, Chengdu 611731, China
Zehao Li: School of Information Engineering, China University of Geosciences, Beijing 100083, China
Wenfeng Zheng: School of Automation, University of Electronic Science and Technology of China, Chengdu 611731, China

Land, 2022, vol. 11, issue 4, 1-21

Abstract: In the context of uneven development studies of China, urban built-up area changes are the index of the impact of power, as the local government is the only party that is able to acquire agricultural land and convert it to construction urban land. Existing studies generally use statistical data to describe the built-up area changes and struggle to meet the requirement of an updated and inexpensive monitoring of uneven development, especially for western cities with tight budgets. Open access NPP-VIIRS (Suomi National Polar-orbiting Partnership Visible Infrared Imaging Radiometer Suite), NDVI (Normalized Difference Vegetation Index), and nighttime LST (Land Surface Temperature) data ranging from 2015 to 2019 were analyzed with a stratified SVM (Support Vector Machine) method in this study to track urban built-up area changes in Chengdu, one of the biggest cities in Western China. The SDE (Standard Deviation Ellipse) and Moran’s I were then applied to evaluate the spatial variations of the built-up area changes. It was revealed that the spatial evolution of built-up area change in Chengdu over the period 2015–2019 demonstrated a “northwest-southeast” spatial expansion pattern, and the change distance in the center of gravity in 2018 and 2019 was greater than that from 2015 to 2017, which reflected the faster uneven development in 2018 and 2019 in Chengdu. The results were verified with finer resolution Landsat-8 OLI images; the high OA (all larger than 92%) and KAPPA (all larger than 0.6) values showed the accuracy of the method. The methodology proposed in this study offers a practical way for cities with tight budgets to monitor uneven development, and this study suggests a further adaption using higher-resolution remote sensing images and field experiments.

Keywords: uneven developments; urban urban built-up area; Chengdu; NPP-VIIRS (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (23)

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