Yuan et al. (2026) Extreme Hydrological Events and Lake-Wetland Landscape Dynamics: Toward Adaptive Management in Large Freshwater Systems-Insights from Poyang Lake, China

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Identification

• Journal: Land
• Year: 2026
• Date: 2026-09-02
• Authors: Lyu Yuan, Xinggen Liu, Jinfeng Zeng, Zhiming Song
• DOI: 10.3390/land15091620

Research Groups

Not specified in the provided text.

Short Summary

This study analyzes the impact of compound drought and flood disturbances on Poyang Lake, identifying critical water level thresholds that trigger abrupt transitions in landscape connectivity and habitat stability.

Objective

• To quantify the propagation process from meteorological drought to hydrological drought and identify the critical water level thresholds governing abrupt landscape transitions in the Poyang Lake system.

Study Configuration

• Spatial Scale: Poyang Lake, China (specifically comparing the Nanji Wetland National Nature Reserve and the Poyang Lake National Nature Reserve).
• Temporal Scale: Not explicitly stated (analysis includes a 21-day lag time for hydrological response).

Methodology and Data

• Models used: Morphological Spatial Pattern Analysis (MSPA), piecewise regression, and drought indices.
• Data sources: Remote sensing data.

Main Results

• The optimal lag time for the lake water area to respond to meteorological drought is 21 days.
• Identified critical water level thresholds: 12.50 m for maintaining lake-wide connectivity and 12.73 m for preserving core deep-water habitats.
• The water level range between 9.75 m and 14.44 m is the key sensitive interval for rapid landscape reorganization.
• Spatial heterogeneity exists in landscape response: the Nanji Wetland National Nature Reserve is more sensitive to drought-induced fragmentation than the Poyang Lake National Nature Reserve.

Contributions

• Provides quantitative water level thresholds and identifies spatial variations in vulnerability, offering a scientific basis for the adaptive management and resilience improvement of floodplain lake-wetland systems facing extreme hydrological events.

Funding

Not specified in the provided text.

Citation

@article{Yuan2026Extreme,
  author = {Yuan, Lyu and Liu, Xinggen and Zeng, Jinfeng and Song, Zhiming},
  title = {Extreme Hydrological Events and Lake-Wetland Landscape Dynamics: Toward Adaptive Management in Large Freshwater Systems-Insights from Poyang Lake, China},
  journal = {Land},
  year = {2026},
  doi = {10.3390/land15091620},
  url = {https://doi.org/10.3390/land15091620}
}