Figure legends
Figure 1 Effects of warming (W),
nitrogen addition (N) and their interactions on flowering time, duration
of flowering and plant dominance of C3 plants (includesS. breviflora, C. ammannii and A. frigida ) and C4plants (includes C. songorica and K. prostrata ) from 2013 to
2022, based on a repeated-measures analysis of variance (ANOVA).
Uppercase letters indicate significant difference among treatments
determined by Tukey’s HSD test at P <0.05.
Figure 2 Effects of warming and N addition on 0-30cm soil moisture and
soil temperature during a decade (2013-2022) of study in a desert steppe
in China. Error bars show one standard error of the mean.
Figure 3 Structural equation model analysis showing the pathways through
which warming and N addition affect flowering phenology and plant
dominance. Results of model fitting: Sb: RMSEA=0.102, CFI=0.971,
χ2=28.167, df=22, p=0.170; Ca: RMSEA=0.158, CFI=0.831, χ2=36.757, df=22,
p=0.025; At: RMSEA=0.162, CFI=0.853, χ2=31.639, df=22, p=0.02; Af:
RMSEA=1.98, CFI=0.99, χ2=27.678, df=22, p=0.008; Cs: RMSEA=0.130,
CFI=0.907, χ2=32.022, df=22, p=0.077; Kp: RMSEA=0.128, CFI=0.907,
χ2=31.709, df=22, P=0.082; The proportion of variation explained is
expressed in R2. Bold arrows indicate significant
positive (black) and negative (red) paths (P <0.05), and
gray arrows indicate non-significant paths. The numbers next to the
arrows are normalized path coefficients.
Figure 1