FIGURE 1. Response of above-ground net primary productivity (ANPP) 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) and 2020 (b). Data are presented as means + SE. *p < 0.05; **p < 0.01; NS p > 0.05.