Temporal and spatial evolution of landscape ecological risks and driving forces in the Mu Us Sandy Land
Received date: 2025-04-30
Revised date: 2025-06-27
Online published: 2025-09-27
This article takes the Mu Su Sandy Land as the research object， based on 8 periods of remote sensing data， constructs a landscape ecological risk index， integrates landscape pattern index and geographic detector model， and reveals the spatiotemporal evolution law of desert landscape ecological risk， as well as the impact process of the interaction between natural and human factors on ecological risk. The results showed that from 1990 to 2023， there were significant changes in sandy landscape， with an increase of 5.70×103 km2 in grassland area and a decrease of 8.01×103 km2 in unused land area； With the launch of national ecological projects such as the "Three North" project and the return of farmland to forests and grasslands， low-risk areas of sandy land are concentrated in Shenmu City， Wushen Banner and other places， with an increase of 2.04×104 km2 in area. High risk areas are concentrated in Etuoke Banner and Etuoke Front Banner where the sandy land is located， with a decrease of 0.05×103 km2 in area； NDVI （with a contribution rate of over 30%） and annual precipitation dominate the risk evolution in natural factors， while the impact of population density in socio-economic factors continues to increase. The interaction between the two significantly enhances the explanatory power of risk； Ecological projects such as the Three-North Shelterbelt Program have reduced the medium and high ecological risk areas by 57.3%， verified the long-term effectiveness of policy intervention on ecological restoration in vulnerable areas， and provided theoretical and data support for sand control and ecological security barrier construction.
Siqi Li , Haibing Wang , Xiaofei Yuan , Huricha Ao , Haoqin Yang . Temporal and spatial evolution of landscape ecological risks and driving forces in the Mu Us Sandy Land[J]. Journal of Desert Research, 2025 , 45(5) : 230 -240 . DOI: 10.7522/j.issn.1000-694X.2025.00129
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