{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T22:07:16Z","timestamp":1781734036907,"version":"3.54.5"},"reference-count":37,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2022,7,4]],"date-time":"2022-07-04T00:00:00Z","timestamp":1656892800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2016YFC1400906"],"award-info":[{"award-number":["2016YFC1400906"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["20160533B80"],"award-info":[{"award-number":["20160533B80"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Hangzhou Social Development Self-declaration Project","award":["2016YFC1400906"],"award-info":[{"award-number":["2016YFC1400906"]}]},{"name":"Hangzhou Social Development Self-declaration Project","award":["20160533B80"],"award-info":[{"award-number":["20160533B80"]}]},{"name":"Hangzhou Normal University Undergraduate Innovation Capacity Enhancement Project (the \u201cStarlight\u201d Project)","award":["2016YFC1400906"],"award-info":[{"award-number":["2016YFC1400906"]}]},{"name":"Hangzhou Normal University Undergraduate Innovation Capacity Enhancement Project (the \u201cStarlight\u201d Project)","award":["20160533B80"],"award-info":[{"award-number":["20160533B80"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Nighttime light remote sensing technologies provide methods for studying spatiotemporal changes in urban areas. In this research, we study the changes in the urban zone in Zhejiang Province based on NPP\/VIIRS nighttime light data. Moreover, we propose a methodology to extract urban zones through a buffer threshold analysis method and apply the standard deviation ellipse, urban scale increment, \u201cdual-core\u201d primacy and urban-scale Gini index to uncover the evolution of urban dynamics in Zhejiang Province. The results show that the highest overall urban area extraction accuracy was 95.9%; the highest Kappa coefficient was 91%. The nighttime light intensity changes observed in most cities in Zhejiang Province reflected three periods: \u201chigh-speed growth\u201d from 2012\u20132014, \u201clow-speed growth\u201d from 2014\u20132018 and \u201chigh-speed growth\u201d from 2019\u20132020. The growth rates observed during the 2019\u20132020 \u201chigh-speed growth\u201d period exceeded those of the 2012\u20132014 period. Over nine years, the growth rates of the total nighttime light values in all cities ranged from 40% to 319%. Third-tier cities such as Quzhou and Lishui showed significant increases. Second-tier cities, such as Jinhua, Huzhou and Taizhou, had growth rates over 100%. From 2012\u20132014, the development rates increased in cities in southern Zhejiang Province, such as in Wenzhou and Taizhou, thus promoting a southward shift in the center of gravity. After 2014, the development rates increased in cities in northern Zhejiang Province, such as Hangzhou, Ningbo and Jiaxing, thus promoting a northward shift in the center of gravity, with the center stabilizing in the Keqiao District-Yuecheng District of Shaoxing. According to the changes observed in the \u201cdual-core\u201d primacy and urban-scale Gini index results derived from 2012 to 2020, the development of cities in Zhejiang Province has become more balanced over the past nine years.<\/jats:p>","DOI":"10.3390\/rs14133212","type":"journal-article","created":{"date-parts":[[2022,7,4]],"date-time":"2022-07-04T20:59:18Z","timestamp":1656968358000},"page":"3212","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Analyzing the Dynamic Spatiotemporal Changes in Urban Extension across Zhejiang Province Using NPP-VIIRS Nighttime Light Data"],"prefix":"10.3390","volume":"14","author":[{"given":"Yangyang","family":"Yan","sequence":"first","affiliation":[{"name":"Institute of Remote Sensing and Earth Sciences, College of Information science and technology, Hangzhou Normal University, Hangzhou 311121, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hui","family":"Lei","sequence":"additional","affiliation":[{"name":"Institute of Remote Sensing and Earth Sciences, College of Information science and technology, Hangzhou Normal University, Hangzhou 311121, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yihong","family":"Chen","sequence":"additional","affiliation":[{"name":"Institute of Remote Sensing and Earth Sciences, College of Information science and technology, Hangzhou Normal University, Hangzhou 311121, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bin","family":"Zhou","sequence":"additional","affiliation":[{"name":"Institute of Remote Sensing and Earth Sciences, College of Information science and technology, Hangzhou Normal University, Hangzhou 311121, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,4]]},"reference":[{"key":"ref_1","first-page":"3","article-title":"Firmly march on the path of socialism with Chinese characteristics and strive to complete the building of a moderately prosperous society in all respects\u2013Report to the 18th National Congress of the Chinese Communist Party","volume":"22","author":"Hu","year":"2012","journal-title":"Qiushi"},{"key":"ref_2","first-page":"13","article-title":"Basic rules and key paths for high-quality development of the new urbanization in China","volume":"38","author":"Fang","year":"2019","journal-title":"Geogr. 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