Identification of Polycentric Cities in China Based on NPP-VIIRS Nighttime Light Data
Nighttime light data play an important role in the research on cities, while the urban centers over a large spatial scale are still far from clearly understood. Aiming at the current challenges in monitoring the spatial structure of cities using nighttime light data, this paper proposes a new method...
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doaj-28e923a8386d4b2ab40e94c66871a1c02020-11-25T03:47:13ZengMDPI AGRemote Sensing2072-42922020-10-01123248324810.3390/rs12193248Identification of Polycentric Cities in China Based on NPP-VIIRS Nighttime Light DataMingguo Ma0Qin Lang1Hong Yang2Kaifang Shi3Wei Ge4School of Geographical Sciences, Southwest University, Chongqing Jinfo Mountain Field Scientific Observation and Research Station for Karst Ecosystem, Ministry of Education, Chongqing 400715, ChinaChongqing Engineering Research Center for Remote Sensing Big Data Application, School of Geographical Sciences, Southwest University, Chongqing 400715, ChinaSchool of Geographical Sciences, Southwest University, Chongqing Jinfo Mountain Field Scientific Observation and Research Station for Karst Ecosystem, Ministry of Education, Chongqing 400715, ChinaChongqing Engineering Research Center for Remote Sensing Big Data Application, School of Geographical Sciences, Southwest University, Chongqing 400715, ChinaShenzhen State High-Tech Industrial Innovation Center, Shenzhen 518057, ChinaNighttime light data play an important role in the research on cities, while the urban centers over a large spatial scale are still far from clearly understood. Aiming at the current challenges in monitoring the spatial structure of cities using nighttime light data, this paper proposes a new method for identifying urban centers for massive cities at the large spatial scale based on the brightness information captured by the Suomi National Polar-Orbiting Partnership’s Visible Infrared Imaging Radiometer Suite (NPP-VIIRS) sensor. Based on the method for extracting the peak point based on digital elevation model (DEM) data in terrain analysis, the maximum neighborhood and difference algorithms were applied to the NPP-VIIRS data to extract the pixels with the peak nighttime light intensity to identify the potential locations of urban centers. The results show 7239 urban centers in 2200 cities in China in 2017, with an average of 3.3 urban centers per city. Approximately 68% of the cities had significant polycentric structures. The developed method in this paper is useful for identifying the urban centers and can provide the reference to the city planning and construction.https://www.mdpi.com/2072-4292/12/19/3248NPP-VIIRSpolycentric urban pointspeak pixel extractionspatiotemporal patternneighborhood algorithm |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mingguo Ma Qin Lang Hong Yang Kaifang Shi Wei Ge |
spellingShingle |
Mingguo Ma Qin Lang Hong Yang Kaifang Shi Wei Ge Identification of Polycentric Cities in China Based on NPP-VIIRS Nighttime Light Data Remote Sensing NPP-VIIRS polycentric urban points peak pixel extraction spatiotemporal pattern neighborhood algorithm |
author_facet |
Mingguo Ma Qin Lang Hong Yang Kaifang Shi Wei Ge |
author_sort |
Mingguo Ma |
title |
Identification of Polycentric Cities in China Based on NPP-VIIRS Nighttime Light Data |
title_short |
Identification of Polycentric Cities in China Based on NPP-VIIRS Nighttime Light Data |
title_full |
Identification of Polycentric Cities in China Based on NPP-VIIRS Nighttime Light Data |
title_fullStr |
Identification of Polycentric Cities in China Based on NPP-VIIRS Nighttime Light Data |
title_full_unstemmed |
Identification of Polycentric Cities in China Based on NPP-VIIRS Nighttime Light Data |
title_sort |
identification of polycentric cities in china based on npp-viirs nighttime light data |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2020-10-01 |
description |
Nighttime light data play an important role in the research on cities, while the urban centers over a large spatial scale are still far from clearly understood. Aiming at the current challenges in monitoring the spatial structure of cities using nighttime light data, this paper proposes a new method for identifying urban centers for massive cities at the large spatial scale based on the brightness information captured by the Suomi National Polar-Orbiting Partnership’s Visible Infrared Imaging Radiometer Suite (NPP-VIIRS) sensor. Based on the method for extracting the peak point based on digital elevation model (DEM) data in terrain analysis, the maximum neighborhood and difference algorithms were applied to the NPP-VIIRS data to extract the pixels with the peak nighttime light intensity to identify the potential locations of urban centers. The results show 7239 urban centers in 2200 cities in China in 2017, with an average of 3.3 urban centers per city. Approximately 68% of the cities had significant polycentric structures. The developed method in this paper is useful for identifying the urban centers and can provide the reference to the city planning and construction. |
topic |
NPP-VIIRS polycentric urban points peak pixel extraction spatiotemporal pattern neighborhood algorithm |
url |
https://www.mdpi.com/2072-4292/12/19/3248 |
work_keys_str_mv |
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