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Based on nighttime lighting data, this study employed spatial direction analysis, exploratory spatial data analysis, and social network analysis to explore the spatial characteristics of economic development and analyzed the economic connection network structures within urban agglomerations in the New Western Land-sea Corridor (NWLSC) in western China. The results show that the spatial pattern of the Tianshan North slope urban agglomeration, Guanzhong Plain urban agglomeration, and Lanzhou\u2013Xining urban agglomeration shrank, while other urban agglomerations expanded. The city economy of the Chengdu\u2013Chongqing urban agglomeration (CCUA) and the Beibu Gulf urban agglomeration varied dramatically according to a LISA space-time transition analysis, which indicates a strong spatial dependence between cities in the local space. Within urban agglomerations, the economic connection between cities increased significantly, and central cities were at the core of the network and significantly influenced other cities. Among the urban agglomerations, economic connections among neighboring urban agglomerations in geographic space increased during the study period. The CCUA gradually developed into the center of the economic network in the NWLSC. Network density positively influenced economic connections. The degree centrality, closeness centrality, and betweenness centrality significantly enhanced the economic connections between city agglomerations. The study\u2019s conclusions and methods can serve as the policy support for the cooperative development of urban agglomerations in NWLSC serve as a guideline for the development of other economically underdeveloped regions in the world.<\/jats:p>","DOI":"10.3390\/ijgi11100522","type":"journal-article","created":{"date-parts":[[2022,10,17]],"date-time":"2022-10-17T21:11:51Z","timestamp":1666041111000},"page":"522","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Application of Social Network Analysis in the Economic Connection of Urban Agglomerations Based on Nighttime Lights Remote Sensing: A Case Study in the New Western Land-Sea Corridor, China"],"prefix":"10.3390","volume":"11","author":[{"given":"Bin","family":"Zhang","sequence":"first","affiliation":[{"name":"Center for China Western Modernization, Guizhou University of Finance and Economics, University City, Huaxi District, Guiyang 550025, China"},{"name":"College of Big Data Application and Economics, Guizhou University of Finance and Economics, University City, Huaxi District, Guiyang 550025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jian","family":"Yin","sequence":"additional","affiliation":[{"name":"Center for China Western Modernization, Guizhou University of Finance and Economics, University City, Huaxi District, Guiyang 550025, China"},{"name":"School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Xiangfang District, Harbin 150050, China"},{"name":"Guizhou Key Laboratory of Big Data Statistical Analysis, Huaxi District, Guiyang 550025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongtao","family":"Jiang","sequence":"additional","affiliation":[{"name":"Center for China Western Modernization, Guizhou University of Finance and Economics, University City, Huaxi District, Guiyang 550025, China"},{"name":"College of Big Data Application and Economics, Guizhou University of Finance and Economics, University City, Huaxi District, Guiyang 550025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuanhong","family":"Qiu","sequence":"additional","affiliation":[{"name":"Center for China Western Modernization, Guizhou University of Finance and Economics, University City, Huaxi District, Guiyang 550025, China"},{"name":"College of Big Data Application and Economics, Guizhou University of Finance and Economics, University City, Huaxi District, Guiyang 550025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"102801","DOI":"10.1016\/j.cities.2020.102801","article-title":"The spatial integration and coordinated industrial development of urban agglomerations in the Yangtze River Economic Belt, China","volume":"104","author":"Liu","year":"2020","journal-title":"Cities"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Qin, X., Qian, Y., Zeng, J., and Wei, X. 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