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<p>Ecosystem stability (ESB) is fundamental to regional ecological security and sustainable development, yet it remains insufficiently studied in the ecologically fragile South China Karst (SCK). This study assessed ESB in the SCK from 2000 to 2020 using a structure–process–function framework and applied the geographical detector method to identify its driving factors. The results showed that: (1) ESB improved significantly, with 57.75% of counties showing improvement, 36.35% remaining stable, and 5.90% declining; (2) natural factors were the dominant drivers of ESB spatial differentiation, although their influence weakened over time, while the effects of social factors and their interactions with natural factors increased; and (3) Ecological restoration programs, including the Grain for Green Program and karst desertification control, have contributed to sustained improvements in ecosystem stability by enhancing environmental conditions and strengthening ecosystem self-regulation. These findings clarify the spatiotemporal dynamics and driving mechanisms of ESB in the SCK and provide scientific support for ecological restoration, desertification control, and regional sustainable development.</p>

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Assessment of ecosystem stability and analysis of its driving mechanisms in the South China Karst: a structure-process-function framework perspective

  • 期刊论文

  • 发表日期：

    2026年7月17日

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  • Haijun Tang,
  • Kangning Xiong,
  • Jingli Jin,
  • Lu Luo,
  • Yi Chen,
  • Jiaying Chen

摘要

Ecosystem stability (ESB) is fundamental to regional ecological security and sustainable development, yet it remains insufficiently studied in the ecologically fragile South China Karst (SCK). This study assessed ESB in the SCK from 2000 to 2020 using a structure–process–function framework and applied the geographical detector method to identify its driving factors. The results showed that: (1) ESB improved significantly, with 57.75% of counties showing improvement, 36.35% remaining stable, and 5.90% declining; (2) natural factors were the dominant drivers of ESB spatial differentiation, although their influence weakened over time, while the effects of social factors and their interactions with natural factors increased; and (3) Ecological restoration programs, including the Grain for Green Program and karst desertification control, have contributed to sustained improvements in ecosystem stability by enhancing environmental conditions and strengthening ecosystem self-regulation. These findings clarify the spatiotemporal dynamics and driving mechanisms of ESB in the SCK and provide scientific support for ecological restoration, desertification control, and regional sustainable development.