Fig. 5

Monthly variations of different plant functional communities aboveground and belowground biomass under different drought stresses during the growing season in the S. breviflora desert steppe (Note: W1: natural rainfall (control); W2: rain reduction by 30%; W3: rain reduction by 50%; Different lowercase letters indicate significant differences between the treatments in total plant aboveground or belowground biomass (P < 0.05)).