{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T18:56:14Z","timestamp":1784055374021,"version":"3.55.0"},"reference-count":50,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2020,6,2]],"date-time":"2020-06-02T00:00:00Z","timestamp":1591056000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Bohong Zheng","award":["51478470"],"award-info":[{"award-number":["51478470"]}]},{"name":"Bing Tu","award":["51704115"],"award-info":[{"award-number":["51704115"]}]},{"name":"Bing Tu","award":["61977022"],"award-info":[{"award-number":["61977022"]}]},{"name":"Qianming Li","award":["CX2018B075"],"award-info":[{"award-number":["CX2018B075"]}]},{"name":"Qianming Li","award":["502221802"],"award-info":[{"award-number":["502221802"]}]},{"name":"Zhiyuan Wang","award":["18YBQ106"],"award-info":[{"award-number":["18YBQ106"]}]},{"name":"Zhiyuan Wang","award":["19B480"],"award-info":[{"award-number":["19B480"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Rapid urbanization has given rise to serious urban problems. It is crucial to understand the urbanization process to accurately and quickly identify boundary changes in urban built-up areas and implement planning schemes and adjustments in scientific and effective ways. This study proposes a new method to automate and refine the extraction of urban built-up areas by using Landsat and nighttime light (NTL) imagery. The urban agglomeration of Dongting Lake Ecological Economic Zone (UADLEEZ) Landsat data are mapped to NTL data using resampling, superpixel segmentation, and assigning the blank part with the Euclidean distance method. We then compared our findings with those produced via traditional threshold extraction methods. In total, 33 built-up areas of UADLEEZ boundary maps were produced between 1992 and 2018. Thus, we reached the following conclusions: (1) the urban built-up areas obtained via our proposed method are finer than those obtained via other threshold extraction methods; (2) we applied the extraction method to UADLEEZ, and analyzed the expansion of the urban agglomeration based on expansion scale, gravity center offset, and landscape pattern index, the analysis of expansion process is consistent with the actual situation; (3) the proposed method can be used to draw long-term dynamic maps of urban extents in units of years, and the results can be used to update the existing products. This study can serve as a reference for future urban planning, and provide both adjustment programs for relevant departments, and an objective basis for governmental decision-making.<\/jats:p>","DOI":"10.3390\/rs12111797","type":"journal-article","created":{"date-parts":[[2020,6,3]],"date-time":"2020-06-03T04:12:09Z","timestamp":1591157529000},"page":"1797","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Refining Urban Built-Up Area via Multi-Source Data Fusion for the Analysis of Dongting Lake Eco-Economic Zone Spatiotemporal Expansion"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9293-9629","authenticated-orcid":false,"given":"Qianming","family":"Li","sequence":"first","affiliation":[{"name":"School of Architecture and Art, Central South University, Changsha 410083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bohong","family":"Zheng","sequence":"additional","affiliation":[{"name":"School of Architecture and Art, Central South University, Changsha 410083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bing","family":"Tu","sequence":"additional","affiliation":[{"name":"School of Information Science and Technology, Hunan Institute of Science and Technology, Yueyang 414000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yusheng","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Landscape Architecture, Central South University of Forestry and Technology, Changsha 410004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiyuan","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Architecture and Art, Central South University, Changsha 410083, China"},{"name":"School of Architecture, University of South China, Hengyang 421001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Jiang","sequence":"additional","affiliation":[{"name":"School of Information Science and Technology, Hunan Institute of Science and Technology, Yueyang 414000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kai","family":"Yao","sequence":"additional","affiliation":[{"name":"School of Information Science and Technology, Hunan Institute of Science and Technology, Yueyang 414000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiawei","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Information Science and Technology, Hunan Institute of Science and Technology, Yueyang 414000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,6,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Seto, K.C., Fragkias, M., G\u00fcneralp, B., and Reilly, M.K. 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