Peng et al. (2026) Wildfires diminish vegetation control on surface runoff

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Science Advances
• Year: 2026
• Date: 2026-10-09
• Authors: Yuanyuan Peng, Kun� Shi, Shun Bi, Qi Guan
• DOI: 10.1126/sciadv.aei3713

Research Groups

• Department of Earth Sciences, University of California, Berkeley
• NASA Jet Propulsion Laboratory, California Institute of Technology
• National Center for Atmospheric Research (NCAR), Boulder, Colorado

Short Summary

This study assesses the impact of wildfires on the coupling between vegetation and hydrological cycles globally, revealing a systematic weakening of vegetation control on runoff after fires.

Objective

• Investigate how wildfire disturbances alter the sensitivity of surface runoff to vegetation dynamics across climatic gradients and fire regimes.

Study Configuration

• Spatial Scale: Global terrestrial ecosystems
• Temporal Scale: Multidecadal (decadal-scale observations)

Methodology and Data

• Models used: Spatially explicit framework for quantifying pre- and postfire runoff-vegetation sensitivity
• Data sources: Satellite observations (e.g., Landsat, MODIS) and reanalysis datasets (e.g., ERA5, MERRA2)

Main Results

• Widespread and systematic weakening of vegetation control on runoff after wildfires
• Attenuation of hydrology-vegetation interactions modulated by aridity and fire intensity
• Most pronounced sensitivity losses in fragile drylands

Contributions

• Provides a mechanistic understanding of how compound climate-fire perturbations accelerate terrestrial water flux instability
• Exposes critical blind spot in traditional hydrological models that overlook disturbance-driven vegetation shifts

Funding

• NASA Terrestrial Hydrology Program (NNX16AC96G)
• National Science Foundation's Division of Earth Sciences (EAR-1844461)

Citation

@article{Peng2026Wildfires,
  author = {Peng, Yuanyuan and Shi, Kun� and Bi, Shun and Guan, Qi},
  title = {Wildfires diminish vegetation control on surface runoff},
  journal = {Science Advances},
  year = {2026},
  doi = {10.1126/sciadv.aei3713},
  url = {https://doi.org/10.1126/sciadv.aei3713}
}