[1]LIN Zhiqiang,PENG Shuangyun,HONG Liang,et al.Dynamic Monitoring and Spatial-Temporal Pattern Evolution of Built-up Areas in Central Yunnan Based on Nighttime Light Data[J].Research of Soil and Water Conservation,2021,28(01):265-271.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 01
Page number:
265-271
Column:
Public date:
2021-01-10
- Title:
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Dynamic Monitoring and Spatial-Temporal Pattern Evolution of Built-up Areas in Central Yunnan Based on Nighttime Light Data
- Author(s):
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LIN Zhiqiang1,2, PENG Shuangyun1,2, HONG Liang1,2, XU Quanli1,2, ZHOU Yanlian
1
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(1.College of Tourism and Geography, Yunnan Normal University, Kunming 650500, China; 2.Yunnan Geospatial Information Technology Engineering Technology Research Center, Kunming 650500, China)
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- Keywords:
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night light remote sensing; central Yunnan urban agglomeration; DMSP/OLS; urban expansion; space-time analysis
- CLC:
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P237
- DOI:
-
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- Abstract:
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Timely and accurate acquisition of spatial information of urban built-up areas in urban agglomerations and monitoring of the spatiotemporal changes of urban expansion are of great significance to the optimization of land use methods and the construction of ecological civilization. Based on the DMSP/OLS night light remote sensing data and the comparison method based on statistical data, the built-up area information of central Yunnan urban agglomeration from 1993 to 2013 was extracted to explore the dynamic changes of the spatial pattern of the built-up area of central Yunnan urban agglomeration during the 20 years. The results show that:(1)in the past 20 years, the central Yunnan urban agglomeration had gradually formed a central radial cluster form centered on Kunming;(2)the area of urban built-up areas in central Yunnan had increased 8-fold from 1993 to 2013, especially the growth of built-up areas in Kunming;(3)there were obvious differences between different cities and different stages of expansion speed and expansion intensity: Before 2003, cities in central Yunnan were in a stage of slow growth trend. In the past 20 years, the expansion intensity of central Yunnan urban agglomeration had shown a trend of decreasing first—then increasing—then decreasing.