Extended Data Fig. 3: Warming effects on C3 and C4 plant biomasses and microbial DNA yield under different precipitation levels.
From: Drought amplifies warming-induced soil carbon loss in a decade-long experiment
(a, b) Mean C3 and C4 plant biomasses from 2009 to 2020. (c) Mean microbial DNA yield from 2009 to 2020. Data were pooled across clipping treatments and all measured years, and each bar shows the mean plus standard error (SE) (n = 92, (4 clipped+4 unclipped) × 11 years plus 4 clipped plots in 2009). Non-significant interactive effects of warming and altered precipitations were observed on C3 and C4 plant biomasses (P > 0.152), while there was a significant interactive effect on microbial biomass based on DNA yield by the linear mixed-effects models (P < 0.017). Thus, percent changes of DNA yield by warming are labeled above the bars under drought and wet conditions. P value of the two-sided paired t-test is labeled by ** P < 0.01.
