FIGURE 4 . Response of relative shoot biomass of plant species
(Stipa breviflora , Agropyron mongolicum ,Cleistogenes squarrosa , Chenopodium aristatum and other
species) to nitrogen addition (N) and phosphorus addition (P) in
mycorrhizal (black bars; non-benomyl addition) and
mycorrhizal-suppressed (white bars; benomyl addition) plots in 2019 (a,
b) and 2020 (c, d).