Fig. 1: Schematic diagram to quantify drought recovery and the governing processes.
From: Widespread spring phenology effects on drought recovery of Northern Hemisphere ecosystems
Two different trajectories of drought recovery (time required for an ecosystem to recover to its predrought functional state from extreme drought events) were specified depending on the interacting effects of vegetation phenology, drought timing and other bioclimatic and soil factors. a, Drought recovery can occur within a single growing season (RSGS) or extends to the subsequent growing season (drought recovery within multiple growing seasons) (RMGS). Under RMGS, the drought recovery is suspended by vegetation dormancy and is strongly dependent on climate conditions during the dormancy period. Both the climate and vegetation growth conditions in the 6 months preceding extreme drought events (predrought) were considered. Drought response lag was defined as the duration (months) between the onset of extreme drought event and the deepest suppression of vegetation growth induced from the drought events. b, Vegetation phenology effects on drought recovery through both biophysical and biological effects, interacted with multiple bioclimatic and soil factors as well as the drought sensitivity. SOSdrought_year and SOSsubsequent_year are the start of growing season in the drought year and the subsequent year, respectively, and EOSdrought_year is the end of growing season in the drought year. The progression of seasons is from left to right in a and b. Only single extreme drought events are considered in this study (Methods).
