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<p>In the context of the Anthropocene, the escalating crisis in human-environment interactions poses a growing threat to regional ecosystems worldwide. China’s rapid urbanization and intense anthropogenic pressures exemplify this global challenge, underscoring the need for ecosystem management strategies that account for geographic heterogeneity and adopt spatially differentiated approaches. The tri-provinces junctional region of China, characterized by its marginal geographic location and fragmented administrative boundaries, faces particular obstacles to ecological conservation and cross-jurisdictional governance. To address these issues, this study evaluated the eco-quality and eco-risk of the region and employed a four-quadrant model-based zoning method. The main findings are as follows: (1) Eco-quality exhibited non-stationary spatiotemporal patterns, with an initial improvement followed by stabilization and a persistent north–south disparity. (2) Overall eco-risk showed a monotonic decline, with a clear spatial bifurcation along the 400 mm isohyet. (3) The study area was classified into four ecological zones and eight sub-zones, which displayed positive spatial continuity and pronounced zonal differentiation; their areal proportions followed the order:Key zone &gt; Excellent zone &gt; Conflict-high risk zone &gt; Conflict-low quality zone. (4) The proportions of the Excellent zone and Conflict-low quality zone increased over time, while those of the Key zone and Conflict-high risk zone decreased. This was accompanied by a westward expansion of the Excellent zone and the replacement of the Key zone in its northeastern and southern parts. Overall, inter-zonal transformations were predominantly positive. Within nature reserves, intra-zonal changes remained largely stable, with local improvements slightly outweighing degradation. These findings are expected to provide a scientific basis for formulating transboundary ecological conservation plans and implementing differentiated management strategies in China’s tri-provinces junctional region.</p>

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Eco-zoning for transboundary sustainability: Integrating eco-quality and eco-risk in China’s tri-provinces junctional region

  • 期刊论文

  • 发表日期：

    2026年7月29日

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  • Yida An,
  • Lei Zhang,
  • Ying Han,
  • Yanguo Liu,
  • Qing Wang

摘要

In the context of the Anthropocene, the escalating crisis in human-environment interactions poses a growing threat to regional ecosystems worldwide. China’s rapid urbanization and intense anthropogenic pressures exemplify this global challenge, underscoring the need for ecosystem management strategies that account for geographic heterogeneity and adopt spatially differentiated approaches. The tri-provinces junctional region of China, characterized by its marginal geographic location and fragmented administrative boundaries, faces particular obstacles to ecological conservation and cross-jurisdictional governance. To address these issues, this study evaluated the eco-quality and eco-risk of the region and employed a four-quadrant model-based zoning method. The main findings are as follows: (1) Eco-quality exhibited non-stationary spatiotemporal patterns, with an initial improvement followed by stabilization and a persistent north–south disparity. (2) Overall eco-risk showed a monotonic decline, with a clear spatial bifurcation along the 400 mm isohyet. (3) The study area was classified into four ecological zones and eight sub-zones, which displayed positive spatial continuity and pronounced zonal differentiation; their areal proportions followed the order:Key zone > Excellent zone > Conflict-high risk zone > Conflict-low quality zone. (4) The proportions of the Excellent zone and Conflict-low quality zone increased over time, while those of the Key zone and Conflict-high risk zone decreased. This was accompanied by a westward expansion of the Excellent zone and the replacement of the Key zone in its northeastern and southern parts. Overall, inter-zonal transformations were predominantly positive. Within nature reserves, intra-zonal changes remained largely stable, with local improvements slightly outweighing degradation. These findings are expected to provide a scientific basis for formulating transboundary ecological conservation plans and implementing differentiated management strategies in China’s tri-provinces junctional region.