Elevational patterns and environmental explanations
According to the results of polynomial regression, phylogenetic and
morphological structure as well as species richness (SR) in LSD all
exhibited significant (p< 0.05) linear or binomial pattern
along elevational gradient (Fig. 3 and S1; Table S5). In RED,
phylogenetic structure (SES.MPD) and morphological structure for
size-related morphological attributes (SES.PWsize)
exhibited non-linear relationship with elevation, shape-related
morphological structure and SR exhibited significant linear and quadric
relationship with elevation (Fig. 3 and S1; Table S5).
According to the results of forward selection, we found that the best
predictors varied across datasets and facets of community structure
(Table S6). In SEMs, there were positive correlations between
phylogenetic and morphological structures in LSD (Fig. 4, a), which were
extremely weak in RED (Fig. 4, b).