Fig. 4: Map of vegetation sensitivities to drought and four concurrent hydroclimatic factors.
From: Higher vegetation sensitivity to meteorological drought in autumn than spring across European biomes
a–c Vegetation sensitivities to drought, \({\gamma }_{d}\) using SPEI. d–f Vegetation sensitivities to SM―soil moisture, g–i vegetation sensitivities to VPD―vapor pressure deficit, j–l vegetation sensitivities to Rn―net radiation, and m–o vegetation sensitivities to aCO2―atmospheric CO2 concentration, during three vegetation seasons. These maps show the ensemble mean sensitivities using seven vegetation indicators at the time scale when vegetation-drought correlation reaches the strongest level among time scales ranging from 1 to 24 months. Positive values indicate vegetation growth increasing with increases in hydroclimatic factors (or decreases in drought intensity), and negative values indicate the opposite.
