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With climate change intensifying, the frequency of extreme compound weather events—such as heatwaves and droughts—continues to rise. Flash droughts, characterized by their rapid onset and severe impacts, are becoming a new normal in the 21st century. Events like the 2012 U.S. Midwest flash drought and the 2022 Yangtze River drought have led to substantial declines in terrestrial carbon sinks and crop yields. Assessing ecosystem resilience to flash droughts is crucial for developing adaptation strategies, yet global-scale, long-term studies on vegetation resistance remain scarce.