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Landscape Ecological Risk and Drivers of Land-Use Transition under the Perspective of Differences in Topographic Gradient

Author

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  • Xuebin Zhang

    (College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou 730070, China
    Key Laboratory of Resource Environment and Sustainable Development of Oasis, Lanzhou 730070, China
    Gansu Engineering Research Center of Land Utilization and Comprehension Consolidation, Lanzhou 730070, China)

  • Jiale Yu

    (College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou 730070, China)

  • Haoyuan Feng

    (College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou 730070, China)

  • Litang Yao

    (College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou 730070, China)

  • Xuehong Li

    (College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou 730070, China)

  • Hucheng Du

    (College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou 730070, China)

  • Yanni Liu

    (College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou 730070, China)

Abstract

Human activities have caused different degrees of land-use change on different topographic gradients, with impacts on the landscape and ecosystem. Effectively preventing and addressing ecological risk (ER) and achieving harmonious coexistence between humans and nature are important aspects of sustainable development. In this study, we used Gansu Province as an example, adopted five periods of land-use data in 1980, 1990, 2000, 2010 and 2020, and used the geoinformatic Tupu method and the terrain distribution index to study land-use changes under different topographic gradients, and then constructed the landscape ecological risk assessment (LERA) model based on the landscape pattern index to analyze landscape ecological risk (LER) spatiotemporal changes under different topographic gradients, and finally explored the LER driving factors using the geodetector model. The results showed that (1) the dominant land-use types were unused land and grassland, accounting for approximately 74% of the land. The situation of transferring and changing each type was more drastic. The distribution and changes in cropland and built-up land were easily found in low topographic gradient areas with low elevations and small slopes; the distribution and changes in woodland, grassland and water areas were easily found in high topographic gradient areas with high elevations and large slopes. (2) The landscape ecological risk index (LERI) was 0.018, 0.019, 0.019, 0.019 and 0.020, respectively, with spatial expressions of high in the northwest and low in the southeast. Low LER was concentrated in high topographic gradient ecological reserves; high LER was concentrated in low topographic gradient human interference areas and high topographic gradient natural environmental complex areas. (3) Natural factors mainly acted on the LER on moderate and high topographic position gradients; socioeconomic factors mainly acted on the LER on low topographic position gradients. Human interference interacted with natural factors more than human interference alone on LER. This study can provide a scientific basis for ensuring ecological security and sustainable development in areas with complex topography and geomorphology.

Suggested Citation

  • Xuebin Zhang & Jiale Yu & Haoyuan Feng & Litang Yao & Xuehong Li & Hucheng Du & Yanni Liu, 2024. "Landscape Ecological Risk and Drivers of Land-Use Transition under the Perspective of Differences in Topographic Gradient," Land, MDPI, vol. 13(6), pages 1-20, June.
    • Handle: RePEc:gam:jlands:v:13:y:2024:i:6:p:876-:d:1416804
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    References listed on IDEAS

    as
    1. Di Liu & Hai Chen & Hang Zhang & Tianwei Geng & Qinqin Shi, 2020. "Spatiotemporal Evolution of Landscape Ecological Risk Based on Geomorphological Regionalization during 1980–2017: A Case Study of Shaanxi Province, China," Sustainability, MDPI, vol. 12(3), pages 1-16, January.
    2. Lei Zhao & Zhengtao Shi & Guangxiong He & Li He & Wenfei Xi & Qin Jiang, 2023. "Land Use Change and Landscape Ecological Risk Assessment Based on Terrain Gradients in Yuanmou Basin," Land, MDPI, vol. 12(9), pages 1-19, September.
    3. Jian Gong & Jianxin Yang & Wenwu Tang, 2015. "Spatially Explicit Landscape-Level Ecological Risks Induced by Land Use and Land Cover Change in a National Ecologically Representative Region in China," IJERPH, MDPI, vol. 12(11), pages 1-24, November.
    4. Hengrui Zhang & Jianing Zhang & Zhuozhuo Lv & Linjie Yao & Ning Zhang & Qing Zhang, 2023. "Spatio-Temporal Assessment of Landscape Ecological Risk and Associated Drivers: A Case Study of the Yellow River Basin in Inner Mongolia," Land, MDPI, vol. 12(6), pages 1-15, May.
    5. Ziyang Wang & Peiji Shi & Jing Shi & Xuebin Zhang & Litang Yao, 2023. "Research on Land Use Pattern and Ecological Risk of Lanzhou–Xining Urban Agglomeration from the Perspective of Terrain Gradient," Land, MDPI, vol. 12(5), pages 1-20, April.
    6. Litang Yao & Xuebin Zhang & Jun Luo & Xuehong Li, 2023. "Identification of Ecological Management Zoning on Arid Region from the Perspective of Risk Assessment," Sustainability, MDPI, vol. 15(11), pages 1-22, June.
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