1,2,1,- 1Faculty of Geographical Sciences, Beijing Normal University, Beijing, China.
- 2Department of Health and Environmental Sciences, School of Science, Xi’an Jiaotong-Liverpool University, Suzhou, China.
- 3School of Geographical Sciences, Nanjing University of Information Science & Technology, Nanjing, China.
- 4Faculty of Geo-information Science and Earth Observation, University of Twente, Enschede, Netherlands.
Flash drought (faster-developing drought) has been pervasively intensified, posing detrimental constraints on vegetation productivity. However, the divergence in the underlying drivers governing vegetation productivity responses to flash and slow droughts (slower-developing droughts) remains unknown. We quantified the dominant drivers underlying vegetation productivity resilience (the departure of post-drought productivity anomalies to the long-term mean) to both flash and slow droughts. There exhibited significantly lower productivity resilience to flash drought at flash drought hotspots than non-hotspots. Carbon dioxide fertilization effect exerted the greatest positive effect on productivity resilience to both flash and slow droughts, although that effect was smaller under flash droughts. The productivity resilience to flash drought was more sensitive to reduction in productivity anomaly and intensified climate stress than slow drought at flash drought hotspots. This study highlights the increasing risk of flash drought spread on global ecosystem productivity resilience.
How to cite: Guo, R., Wu, X., Wang, P., Chen, T., Chen, X., Cai, J., Wang, X., Zhang, Z., Meng, Z., and Liu, Y.: Increased Spread of Global Flash Droughts Threatens Vegetation Productivity Resilience, EGU General Assembly 2026, Vienna, Austria, 3–8 May 2026, EGU26-2323, https://doi.org/10.5194/egusphere-egu26-2323, 2026.
