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<p>The second-largest freshwater lake of China, Dongting Lake, along with its surrounding regions, serves as a critical nexus for socio-ecological interactions, yet faces unprecedented pressures from rapid urbanization and climate change that threaten both ecosystem service provision and human well-being. Existing ecological security frameworks inadequately address the complex supply-demand dynamics of ecosystem services (ES) and their spatial mismatches in large freshwater lake regions. This study introduces a novel socio-ecological security pattern (SESP) framework that innovatively integrates ecologically risk-adjusted ES supply capacity, human spatial accessibility, and circuit theory. This study introduces a novel socio-ecological security pattern (SESP) framework that innovatively uses social-ecological coupling methodology to integrate ecologically risk-adjusted ES supply capacity, human spatial accessibility, and circuit theory. We systematically analyzed supply-demand dynamics and spatial mismatches of six key ecosystem services (water yield, soil retention, carbon sequestration, urban cooling, flood regulation, and habitat quality) for 2000, 2010, and 2020, and constructed the socio-ecological security pattern based on these ecosystem services assessments. Spatial disparities were observed between ES potential demand and potential supply, with central and northern areas exhibiting significantly lower levels of supply. In the socio-ecological security pattern, there are 53 supply source areas (mainly woodland, 9351&#xa0;km²), 99 ecological corridors (1773&#xa0;km), 69 ecological pinch points (mostly woodland and water), and 42 ecological barrier points (arable, construction, and unused land). Meanwhile, there are 39 demand sources (mostly urban construction land, 1226&#xa0;km²), 88 supply and demand corridors (1249&#xa0;km), and 83 supply-demand nodes (mainly arable land, water bodies, and forest land). This research provides the first comprehensive socio-ecological security pattern framework for large freshwater lake regions, providing scientific foundation for sustainable regional development and practical applications in territorial spatial planning and wetland protection policy.</p>

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Modelling the socio-ecological security pattern for large freshwater lake regions: supply-demand mismatch in the Dongting lake area

  • 期刊论文

  • 发表日期：

    2026年2月5日

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  • Zhenyu Wang,
  • Yuhao Gong,
  • Le Xia,
  • Keyu Luo,
  • Tao Jiang,
  • Yi Ying,
  • Miaomiao Xie

摘要

The second-largest freshwater lake of China, Dongting Lake, along with its surrounding regions, serves as a critical nexus for socio-ecological interactions, yet faces unprecedented pressures from rapid urbanization and climate change that threaten both ecosystem service provision and human well-being. Existing ecological security frameworks inadequately address the complex supply-demand dynamics of ecosystem services (ES) and their spatial mismatches in large freshwater lake regions. This study introduces a novel socio-ecological security pattern (SESP) framework that innovatively integrates ecologically risk-adjusted ES supply capacity, human spatial accessibility, and circuit theory. This study introduces a novel socio-ecological security pattern (SESP) framework that innovatively uses social-ecological coupling methodology to integrate ecologically risk-adjusted ES supply capacity, human spatial accessibility, and circuit theory. We systematically analyzed supply-demand dynamics and spatial mismatches of six key ecosystem services (water yield, soil retention, carbon sequestration, urban cooling, flood regulation, and habitat quality) for 2000, 2010, and 2020, and constructed the socio-ecological security pattern based on these ecosystem services assessments. Spatial disparities were observed between ES potential demand and potential supply, with central and northern areas exhibiting significantly lower levels of supply. In the socio-ecological security pattern, there are 53 supply source areas (mainly woodland, 9351 km²), 99 ecological corridors (1773 km), 69 ecological pinch points (mostly woodland and water), and 42 ecological barrier points (arable, construction, and unused land). Meanwhile, there are 39 demand sources (mostly urban construction land, 1226 km²), 88 supply and demand corridors (1249 km), and 83 supply-demand nodes (mainly arable land, water bodies, and forest land). This research provides the first comprehensive socio-ecological security pattern framework for large freshwater lake regions, providing scientific foundation for sustainable regional development and practical applications in territorial spatial planning and wetland protection policy.