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Spatiotemporal Analysis of Urban Expansion in the Mountainous Hindu Kush Himalayas Region

Author

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  • Zhenhua Chao

    (School of Geographic Science, Nantong University, Nantong 226007, China)

  • Zhanhuan Shang

    (College of Ecology, Lanzhou University, Lanzhou 730000, China)

  • Chengdong Fei

    (School of Geographic Science, Nantong University, Nantong 226007, China)

  • Ziyi Zhuang

    (School of Geographic Science, Nantong University, Nantong 226007, China)

  • Mengting Zhou

    (School of Geographic Science, Nantong University, Nantong 226007, China)

Abstract

As a major human activity, urbanization exerts a strong impact on the fragile ecosystem in the Hindu Kush Himalayas (HKH) region. To maintain sustainable development, reliable data on urban land change are required to assess the impact of urbanization. Here, the reliability evaluation of four global fine-resolution impervious surface area (ISA) products: global annual impervious area (GAIA), global annual urban dynamics (GAUD), global impervious surface area (GISA), and global urban expansion (GUE) was carried out. The characteristics of urban expansion for five representative cities including Kabul, Lhasa, Lijiang, Thimphu, and Xining were remarkably different. Based on the results of incremental analysis and the spatial difference of the ISA, it was found that the GAIA dataset at a 30-m spatial resolution could provide better ISA information than the others in characterizing urban expansion in the mountainous region. Subsequently, the changes in the urban area were analyzed using the GAIA dataset from 1993 to 2018. In general, human settlements had grown, with the transformation of small villages into larger towns and some towns into major cities. Urban expansion would continuously intensify the contradictions between human activity and sustainability and exert a more significant impact on the fragile ecosystem in the HKH region. More attention should be paid to the impact of urbanization on the fragile mountainous ecosystem.

Suggested Citation

  • Zhenhua Chao & Zhanhuan Shang & Chengdong Fei & Ziyi Zhuang & Mengting Zhou, 2023. "Spatiotemporal Analysis of Urban Expansion in the Mountainous Hindu Kush Himalayas Region," Land, MDPI, vol. 12(3), pages 1-13, February.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:3:p:576-:d:1082640
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    1. Altaf Hussain & Susanne Schmidt & Marcus Nüsser, 2023. "Dynamics of Mountain Urbanisation: Evidence from the Trans-Himalayan Town of Kargil, Ladakh, India," Land, MDPI, vol. 12(4), pages 1-16, April.

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