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Study on Urban Spatial Expansion and Its Scale Benefit in the Yellow River Basin

Author

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  • Zhongwu Zhang

    (College of Geographic Science, Shanxi Normal University, Taiyuan 030031, China
    Institute of Human Geography, Shanxi Normal University, Taiyuan 030031, China
    Institute of Ecology and Environment of Yellow River Basin, Taiyuan 030031, China)

  • Liping Liu

    (College of Geographic Science, Shanxi Normal University, Taiyuan 030031, China)

  • Jinyuan Zhang

    (College of Geographic Science, Shanxi Normal University, Taiyuan 030031, China)

Abstract

Based on nighttime light data from 2000, 2005, 2010, 2015 and 2020, the urban built-up area of 90 prefecture-level cities in the Yellow River Basin was extracted, and the urban spatial expansion characteristics of 90 prefecture-level cities were explored from the two elements of expansion speed and expansion intensity. The entropy method was used to calculate the comprehensive level of economic-, social- and ecological-scale benefits of 90 prefecture-level cities. The gray correlation degree was used to measure the correlation between urban spatial expansion and scale benefits, and the geographical detector was used to identify the driving factors of urban spatial expansion. The results show the following: (1) The urban spatial expansion characteristics of 90 prefecture-level cities in the Yellow River Basin are clearly different. From 2000 to 2020, the urban spatial area increased to 2.94 times the original, and the expansion speed and intensity increased but fluctuated significantly. (2) The comprehensive level of economic-, social- and ecological-scale benefits of 90 prefecture-level cities in the Yellow River Basin has gradually improved. (3) There is a high correlation between urban spatial expansion and economic-, social- and ecological-scale benefits in 90 prefecture-level cities in the Yellow River Basin, but there are obvious regional differences in the eastern, central and western prefecture-level cities. (4) The urban spatial expansion of the Yellow River Basin is the result of the joint action of natural factors, the economic development level, industrial structure, government regulation ability, population size and opening level. Among them, per capita GDP, population density and the proportion of secondary and tertiary industry output value to the total output value are the most important driving factors.

Suggested Citation

  • Zhongwu Zhang & Liping Liu & Jinyuan Zhang, 2023. "Study on Urban Spatial Expansion and Its Scale Benefit in the Yellow River Basin," Sustainability, MDPI, vol. 15(18), pages 1-18, September.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:18:p:13747-:d:1240184
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    References listed on IDEAS

    as
    1. Lintao Liu & Shouchao Yu & Hengjia Zhang & Yong Wang & Chao Liang, 2023. "Analysis of Land Use Change Drivers and Simulation of Different Future Scenarios: Taking Shanxi Province of China as an Example," IJERPH, MDPI, vol. 20(2), pages 1-19, January.
    2. Zhongwu Zhang & Yuanfang Liu, 2022. "Spatial Expansion and Correlation of Urban Agglomeration in the Yellow River Basin Based on Multi-Source Nighttime Light Data," Sustainability, MDPI, vol. 14(15), pages 1-16, July.
    3. Yuxi Liu & Cheng Huang & Lvshui Zhang, 2023. "The Spatio-Temporal Patterns and Driving Forces of Land Use in the Context of Urbanization in China: Evidence from Nanchang City," IJERPH, MDPI, vol. 20(3), pages 1-17, January.
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