Ma et al. (2026) Flash Drought Assessment in the Black Soil Region of Northeast China Using FDHI

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Identification

• Journal: Agriculture
• Year: 2026
• Date: 2026-05-24
• Authors: Sunai Ma, Xiaodong Na, Yizhe Wang, Xubin Li, Zeyu Zhang
• DOI: 10.3390/agriculture16111153

Research Groups

Not specified in the provided text.

Short Summary

The study developed a daily-scale Flash Drought Hazard Index (FDHI) to evaluate the spatiotemporal patterns and hydroclimatic drivers of flash droughts in the Black Soil Region of Northeast China from 2000 to 2020.

Objective

• To assess the spatiotemporal patterns of flash drought hazards and identify the dominant driving factors (precipitation, temperature, soil moisture, and runoff) in the Black Soil Region of Northeast China.

Study Configuration

• Spatial Scale: Black Soil Region of Northeast China (with specific focus on the Songnen Plain and Liaohe Plain).
• Temporal Scale: 2000–2020 (daily resolution).

Methodology and Data

• Models used: Flash Drought Hazard Index (FDHI), which integrates the Standardized Precipitation Evapotranspiration Index, Standardized Soil Moisture Index, Standardized Soil Temperature Index, and Standardized Runoff Index.
• Data sources: Hydrometeorological variables (precipitation, evapotranspiration, soil moisture, soil temperature, and runoff).

Main Results

• Frequency: Flash droughts were most frequent in the southern Black Soil Region, specifically in the Songnen Plain (5.98 events/year) and the Liaohe Plain (5.80 events/year).
• Trends: A significant increasing trend in flash drought severity was observed in the Liaohe Plain over the last decade.
• Regional Drivers:
  • Liaohe Plain: Primarily driven by precipitation deficits and enhanced evapotranspiration.
  • Songnen Plain: Primarily driven by soil moisture depletion and temperature anomalies.

Contributions

• Developed a new daily-scale FDHI for high-resolution agricultural flash drought monitoring.
• Revealed pronounced regional heterogeneity in the mechanisms triggering flash droughts within the Black Soil Region of Northeast China.

Funding

Not specified in the provided text.

Citation

@article{Ma2026Flash,
  author = {Ma, Sunai and Na, Xiaodong and Wang, Yizhe and Li, Xubin and Zhang, Zeyu},
  title = {Flash Drought Assessment in the Black Soil Region of Northeast China Using FDHI},
  journal = {Agriculture},
  year = {2026},
  doi = {10.3390/agriculture16111153},
  url = {https://doi.org/10.3390/agriculture16111153}
}