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<p>Dryland regions face complex interactions between urbanization and ecological changes, where effective coordination is essential for enhancing sustainability and resilience. However, most studies concentrate on the national or provincial scales, with insufficient research on county-level coordination, limiting the ability to provide targeted polifrom a precise perspective. This study addresses this gap by analyzing 39 counties within the Hohhot-Baotou-Ordos-Yulin Urban Agglomeration (HBOYUA), a typical dryland urban cluster in China. We use daytime and nighttime remote sensing images to track the spatio-temporal evolution of urbanization and ecological conditions from 1992 to 2023. A novel quantitative framework based on an improved coupling coordination degree (CCD) is proposed to assess their coordination relationship. The results reveal that: (1) Urbanization and ecological quality both exhibited fluctuating upward trends, with spatial heterogeneity increasing for urbanization and decreasing for the eco-environment. Regions with better ecological conditions had higher urbanization levels. (2) The overall coordinated level improved from imbalance (0.36) to low-level coordination (0.55), although its spatial distribution remained uneven, with central urban areas showing higher CCD than surrounding counties. (3) Socioeconomic factors exerted greater effects on CCD than natural factors, with GDP and land surface temperature (LST) playing a significant role in interaction analysis. (4) In western arid regions, urbanization did not necessarily harm ecosystems; instead, ecological conditions improved alongside urbanization. This research offers targeted and valuable references for county and city governments in resource allocation and sustainable development. The proposed methodology is also adaptable for urban resilience studies in other regions.</p>

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County-level coordination between urbanization and ecological change in dryland urban agglomerations: A quantitative approach based on remote sensing

  • 期刊论文

  • 发表日期：

    2025年9月23日

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  • Chunqiang Li,
  • Shanchuan Guo,
  • Zilong Xia,
  • Xiaoquan Pan,
  • Haowei Mu,
  • Hong Fang,
  • Pengfei Tang,
  • Peijun Du

摘要

Dryland regions face complex interactions between urbanization and ecological changes, where effective coordination is essential for enhancing sustainability and resilience. However, most studies concentrate on the national or provincial scales, with insufficient research on county-level coordination, limiting the ability to provide targeted polifrom a precise perspective. This study addresses this gap by analyzing 39 counties within the Hohhot-Baotou-Ordos-Yulin Urban Agglomeration (HBOYUA), a typical dryland urban cluster in China. We use daytime and nighttime remote sensing images to track the spatio-temporal evolution of urbanization and ecological conditions from 1992 to 2023. A novel quantitative framework based on an improved coupling coordination degree (CCD) is proposed to assess their coordination relationship. The results reveal that: (1) Urbanization and ecological quality both exhibited fluctuating upward trends, with spatial heterogeneity increasing for urbanization and decreasing for the eco-environment. Regions with better ecological conditions had higher urbanization levels. (2) The overall coordinated level improved from imbalance (0.36) to low-level coordination (0.55), although its spatial distribution remained uneven, with central urban areas showing higher CCD than surrounding counties. (3) Socioeconomic factors exerted greater effects on CCD than natural factors, with GDP and land surface temperature (LST) playing a significant role in interaction analysis. (4) In western arid regions, urbanization did not necessarily harm ecosystems; instead, ecological conditions improved alongside urbanization. This research offers targeted and valuable references for county and city governments in resource allocation and sustainable development. The proposed methodology is also adaptable for urban resilience studies in other regions.