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  • Aug. 14, 2025

Arid Land Geography ›› 2025, Vol. 48 ›› Issue (5): 825-837.doi: 10.12118/j.issn.1000-6060.2024.305

• Biology and Pedology • Previous Articles     Next Articles

Spatiotemporal pattern evolution of land desertification sensitivity in Hulun Buir grassland from 2001 to 2020

Wujisiguleng 1(), Narisu 1(), LI Na2, YIN Shan1, Wuyundalai 1, LI Mingxing1, LAI Shaojie1   

  1. 1. College of Geographical Sciences, Inner Mongolia Normal University, Hohhot 010022, Inner Mongolia, China
    2. College of Economic and Trading Management, Inner Mongolia Normal University, Hohhot 010022, Inner Mongolia, China
  • Received:2024-05-17 Revised:2024-07-19 Online:2025-05-25 Published:2025-05-13
  • Contact: Narisu E-mail:wujisiguleng0318@163.com;nars2022@163.com

Abstract:

Desertification is among the most pressing environmental challenges affecting human society. Understanding the temporal and spatial changes in desertification sensitivity and revealing its driving factors are crucial for implementation of effective control measures. This study utilized the MEDALUS model, geographic information system (GIS) spatial analysis, geographic detectors, and other methods to develop a desertification sensitivity assessment model. By integrating various natural and human activity factors, this study aimed to identify desertification-sensitive areas and reveal the spatiotemporal evolution patterns and driving mechanisms of desertification sensitivity in the Hulun Buir grasslands, located in Hulun Buir City, Inner Mongolia Autonomous Region, China. The results showed the following. (1) From 2001 to 2020, the desertification sensitivity in the Hulun Buir grassland showed the trend of declining, rising and declining. From 2001 to 2010, the sensitivity exhibited a declining pattern, and then followed by an rising trend from 2010 to 2015, and finally, another phase of decline from 2015 to 2020. (2) Spatial analysis revealed that the desertification sensitivity decreased from west to east across the Hulun Buir grasslands. The sensitivity levels were classified as extreme, high, moderate, mild, and insensitive. (3) Climate and vegetation and soil factors were found to exert the greatest influence on desertification sensitivity. Human interference factors played a secondary role, while topographic factors had the least influence. Furthermore, the interaction between any two factors demonstrated a greater effect than individual factors alone. The results of this study can offer valuable insights for desertification control and strategy formulation in the Hulun Buir grasslands.

Key words: desertification sensitivity, MEDALUS model, geodetector, Hulun Buir grassland