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<p>Enhancing ecological resilience is critical for promoting regional sustainable development and green transformation. However, the specific gradient evolution patterns of ecological resilience in large-scale basins and the underlying driving mechanisms remain insufficiently understood. This research establishes a comprehensive ecological resilience assessment model based on the “resistance-adaptability-recovery” framework. Utilizing multi-source remote sensing data linked to land use information, this study examines the spatiotemporal evolution of the ecological resilience gradient across 1,070 counties in the Yangtze River Economic Belt (YREB) and investigates the mechanisms driving this evolution. The results show that ecological resilience in the YREB remained relatively low and followed a modest decline–rebound trajectory from 2000 to 2020, decreasing by 2.17% between 2000 and 2010 and subsequently increasing by 1.90% between 2010 and 2020. At the basin scale, the longitudinal and latitudinal gradients remained generally stable, with ecological resilience decreasing toward higher longitudes and latitudes. At the urban agglomeration scale, ecological resilience in the Middle Reaches of the Yangtze River Urban Agglomeration (MRYRU) was 8.64% and 23.70% higher than that in the Yangtze River Delta Urban Agglomeration (YRD) and Chengdu–Chongqing Urban Agglomeration (CCU), respectively. From the core to the periphery, the three urban agglomerations exhibited distinct “decline–increase”, “decline”, and “increase” gradient patterns. Comparisons across scales indicate that basin-wide geographical differences provide the broad spatial context for ecological resilience, while regional urbanization further reshapes the basin-wide gradient within urban agglomerations. The GeoDetector and geographically and temporally weighted regression (GTWR) analyses further reveal that the factors influencing ecological resilience gradually shifted from natural-background factors, represented by forest coverage, toward human-related factors, represented by industrial structure and population density. Forest coverage exerted an overall positive effect, whereas the direction and magnitude of the effects of industrial structure and population density varied substantially across space. These findings reveal the multi-scale mechanisms through which basin-scale natural gradients and urbanization within urban agglomerations jointly shape the spatial pattern of ecological resilience, providing a scientific basis for tiered and differentiated resilience governance in the YREB.</p>

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Spatiotemporal Gradient Evolution and Driving Mechanisms of Ecological Resilience in the Yangtze River Economic Belt: A Multi-Scale Analysis

  • 期刊论文

  • 发表日期：

    2026年7月23日

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  • Ruzi Li,
  • Xuanpeng Tang,
  • Sixian Meng,
  • Weifeng Deng,
  • Guoen Wei,
  • Chenghao Liu,
  • Yaobin Liu

摘要

Enhancing ecological resilience is critical for promoting regional sustainable development and green transformation. However, the specific gradient evolution patterns of ecological resilience in large-scale basins and the underlying driving mechanisms remain insufficiently understood. This research establishes a comprehensive ecological resilience assessment model based on the “resistance-adaptability-recovery” framework. Utilizing multi-source remote sensing data linked to land use information, this study examines the spatiotemporal evolution of the ecological resilience gradient across 1,070 counties in the Yangtze River Economic Belt (YREB) and investigates the mechanisms driving this evolution. The results show that ecological resilience in the YREB remained relatively low and followed a modest decline–rebound trajectory from 2000 to 2020, decreasing by 2.17% between 2000 and 2010 and subsequently increasing by 1.90% between 2010 and 2020. At the basin scale, the longitudinal and latitudinal gradients remained generally stable, with ecological resilience decreasing toward higher longitudes and latitudes. At the urban agglomeration scale, ecological resilience in the Middle Reaches of the Yangtze River Urban Agglomeration (MRYRU) was 8.64% and 23.70% higher than that in the Yangtze River Delta Urban Agglomeration (YRD) and Chengdu–Chongqing Urban Agglomeration (CCU), respectively. From the core to the periphery, the three urban agglomerations exhibited distinct “decline–increase”, “decline”, and “increase” gradient patterns. Comparisons across scales indicate that basin-wide geographical differences provide the broad spatial context for ecological resilience, while regional urbanization further reshapes the basin-wide gradient within urban agglomerations. The GeoDetector and geographically and temporally weighted regression (GTWR) analyses further reveal that the factors influencing ecological resilience gradually shifted from natural-background factors, represented by forest coverage, toward human-related factors, represented by industrial structure and population density. Forest coverage exerted an overall positive effect, whereas the direction and magnitude of the effects of industrial structure and population density varied substantially across space. These findings reveal the multi-scale mechanisms through which basin-scale natural gradients and urbanization within urban agglomerations jointly shape the spatial pattern of ecological resilience, providing a scientific basis for tiered and differentiated resilience governance in the YREB.