Bulletin of Surveying and Mapping ›› 2024, Vol. 0 ›› Issue (10): 52-57.doi: 10.13474/j.cnki.11-2246.2024.1009.

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Remote sensing monitoring of desertification in Datong coalfield based on NDVI-Albedo feature space

XIAO Yulei1, ZHANG Yufei2,3,4, YANG Wenfu2,3,4,5   

  1. 1. China University of Mining and Technology, Xuzhou 221116, China;
    2. Key Laboratory of Survey, Monitoring and Protection of Natural Resources in Mining Cities, Ministry of Natural Resources, Jinzhong 030600, China;
    3. Coal Geological Geophysical Exploration Surveying & Mapping Institute of Shanxi Province, Jinzhong 030600, China;
    4. Shanxi Provincial Key Laboratory of Geological Hazard Monitoring, Early Warning and Prevention, Jinzhong 030600, China;
    5. Coal Geological Exploration Research Institute of Shanxi Province, Taiyuan 030032, China
  • Received:2024-01-25 Published:2024-11-02

Abstract: Desertification is one of the important ecological and environmental problems that threatens regional development and human survival. Therefore, desertification monitoring is an important basic work in desertification prevention and control. This article takes the Datong coalfield in Shanxi as an example, uses the NDVI-Albedo feature space to construct the desertification difference index (DDI) from 2000 to 2021, monitors its spatiotemporal changes in desertification, and finally uses geographical detectors to analyze the influencing factors of desertification. The results show that from 2000 to 2021, the desertification of Datong coalfield changed from severe to mild, the area of severe and extremely severe desertification decreased significantly, and the area of mild desertification increased significantly. Overall, 57.75% of the regions showed a significant improvement in desertification, but at the same time, 0.03% of the regions showed an aggravating trend. The results of geographical detection show that vegetation is the main factor affecting desertification, and the impact of vegetation on natural factors such as rainfall and elevation has increased significantly. At the same time, the impact of vegetation on human activities such as land use and population density cannot be ignored.

Key words: desertification, Datong coalfield, NDVI-Albedo characteristic space, spatio-temporal dynamic monitoring

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