Land Use Change in Hongta District in Yuxi City, China Based on Archived Landsat Data of the Past 30 Years
Journal of Computer and Communications, 2018, 6, 138-145 http://www.scirp.org/journal/jcc ISSN Online: 2327-5227 ISSN Print: 2327-5219 Land Use Change in Hongta District in Yuxi City, China Based on Archived Landsat Data of the Past 30 Years Shanyu Zhou, Chaonan Ji, Ran Kang, Hermann Kaufmann Navigation and Remote Sensing Group, Institute of Space Science, Shandong University, Weihai, China How to cite this paper: Zhou, S.Y., Ji, Abstract C.N., Kang, R. and Kaufmann, H. (2018) Land Use Change in Hongta District in Urban expansion, which has affected ecosystem functioning and services at Yuxi City, China Based on Archived Land- local to global scale, is projected to have aggravating impacts on landscape in sat Data of the Past 30 Years. Journal of the future. A detailed study on spatiotemporal patterns of Hongta District in Computer and Communications, 6, 138-145. https://doi.org/10.4236/jcc.2018.611013 Yuxi City over a relatively long timeframe was conducted using mul- ti-temporal Landsat TM, ETM+ and OLI data of 1987-2017 associated with Received: October 27, 2018 Geographic Information System techniques and landscape analysis ap- Accepted: November 12, 2018 proaches. Results showed that sealed surfaces (urban area) have expanded Published: November 19, 2018 from 1.4% to 11.8%, with an annually increasing rate of 7.63%. Trees, farm areas and barren lands all underwent a slight reduction during this time pe- riod, whereby 23.8% of farms and 9.8% of bare lands transferred into sealed surfaces. Focusing on the urban expansion pattern, it presents a uninuclear polarizing polygon mode illustrating the urbanization sprawl over time to all directions.
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