Shao et al. (2026) Response of Paddy Rice Ecosystems to Drought with Solar-Induced Chlorophyll Fluorescence over the Jianghan Plain, China, During 2000–2021

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Identification

• Journal: Land
• Year: 2026
• Date: 2026-09-26
• Authors: Qihui Shao, Hong Chi, Rui Chen, Mengting Chen, Yulian Pan, Lingjie Xu, Weiting Li, Yujing Yang
• DOI: 10.3390/land15101814

Research Groups

• Institute of Soil Science, Chinese Academy of Sciences
• University of Agricultural Sciences, China

Short Summary

This study investigates the impact of drought on paddy rice ecosystems in the Jianghan Plain using satellite-derived solar-induced chlorophyll fluorescence (SIF) and considers three cropping systems. The results highlight the importance of cropping system characteristics and phenological stages in modulating rice drought responses.

Objective

• Investigate the effects of drought on paddy rice ecosystems considering different cropping systems

Study Configuration

• Spatial Scale: Jianghan Plain, China
• Temporal Scale: 2000-2021

Methodology and Data

• Models used: Pixel-specific phenological matching framework
• Data sources: Satellite-derived solar-induced chlorophyll fluorescence (SIF), standardized precipitation evapotranspiration index (SPEI)

Main Results

• Seasonal drought suppressed rice SIF, but the magnitude of decline was not linearly correlated with SPEI
• DCR exhibited the greatest SIF reduction, possibly due to two consecutive growing seasons exposed to water stress
• IFRA showed the smallest reduction, potentially associated with persistent field water storage
• The vegetative stage, particularly during tillering, was most sensitive to drought

Contributions

• This study provides insights into drought assessment and water resource management under diverse cropping systems
• It highlights the importance of considering cropping system characteristics and phenological stages in modulating rice drought responses

Funding

• National Natural Science Foundation of China (Grant No. 41877014)
• Chinese Academy of Sciences Youth Innovation Promotion Association (Grant No. 2018134)

Citation

@article{Shao2026Response,
  author = {Shao, Qihui and Chi, Hong and Chen, Rui and Chen, Mengting and Pan, Yulian and Xu, Lingjie and Li, Weiting and Yang, Yujing},
  title = {Response of Paddy Rice Ecosystems to Drought with Solar-Induced Chlorophyll Fluorescence over the Jianghan Plain, China, During 2000–2021},
  journal = {Land},
  year = {2026},
  doi = {10.3390/land15101814},
  url = {https://doi.org/10.3390/land15101814}
}