Quantifying Vegetation Stability under Drought in the Middle Reaches of Yellow River Basin, China

Under the background of climate warming, increase in frequency and severity drought leads to vegetation facing severe challenges. A comprehensive systematic assessment stability under stress middle reaches Yellow River basin (MRYRB) will help grasp characteristics response drought. In this study, normalized difference index (NDVI) was used achieve quantitative qualitative assessments drought, smoothed monthly standardized precipitation evapotranspiration (SPEI) describe events 2005/2006 identified parameters using a anomaly NDVI across space, which included resistance duration, resilience threshold, lag time. Vegetation dominated by less resilience. The event affected most study area, growth inhibited. duration over 100 days accounted for 65.7%, 89.4% regions could return normal within days. threshold gradually decreased from northwest southeast, time mainly concentrated 1 3 months. These findings contribute better understanding effects on environment, as well scientific references reducing ecological, economic, social losses future droughts, promoting ecological environmental governance high-quality development MRYRB.