qian et al. (2026) Opposing effects of vegetation structural and physiological changes on future flash drought risk in East China

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

Identification

• Journal: Environmental Research Letters
• Year: 2026
• Date: 2026-07-14
• Authors: shenang qian, Xing Yuan, Sisi Chen, Linying Wang
• DOI: 10.1088/1748-9326/ae8a6c

Research Groups

• Institute for Climate and Application Research (ICAR)
• State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG)

Short Summary

This study investigates the impact of vegetation responses to rising CO2 levels on future flash droughts in China, using high-resolution land surface modeling. The results show that both leaf area index changes and CO2-induced physiological adjustments significantly influence the characteristics of flash droughts.

Objective

• Investigate how vegetation responses to rising CO2 levels affect the characteristics of future flash droughts in China

Study Configuration

• Spatial Scale: Regional scale, focusing on northeastern (NE) and northern China (NC)
• Temporal Scale: Subseasonal time scales, with a focus on the onset speed of subseasonal drought

Methodology and Data

• Models used: High-resolution land surface model
• Data sources: Sensitivity experiments using reanalysis data

Main Results

• Leaf area index (LAI) changes increase the flash drought ratio by 2.3% and 3.8% in NE and NC, respectively
• LAI changes accelerate subseasonal drought onset by 1.8% and 3.0% in NE and NC, respectively
• CO2 physiological effect suppresses transpiration and improves water-use efficiency, reducing the flash drought ratio by 10.4% and 8.6% across NE and NC

Contributions

• This study highlights the necessity of incorporating both structural and physiological vegetation responses into future projections of flash droughts and related hydroclimatic extremes
• The results provide new insights into the complex interactions between vegetation, climate change, and flash droughts in China

Funding

• National Natural Science Foundation of China (NSFC)
• Key Research Program of Frontier Sciences, Chinese Academy of Sciences

Citation

@article{qian2026Opposing,
  author = {qian, shenang and Yuan, Xing and Chen, Sisi and Wang, Linying},
  title = {Opposing effects of vegetation structural and physiological changes on future flash drought risk in East China},
  journal = {Environmental Research Letters},
  year = {2026},
  doi = {10.1088/1748-9326/ae8a6c},
  url = {https://doi.org/10.1088/1748-9326/ae8a6c}
}