Bivariate relationships of diversity, stand factors with
ecosystem functions and stability
Both stand biomass and productivity were strongly correlated with
DBHmax (r = 0.68 ~ 0.92), at each grain
size from 400 to 2500 m2 (Table 1). However, they were
only occasionally related to diversity indices significantly, except for
FRic, which still showed correlations markedly lower than
DBHmax. In contrast, the stabilities of biomass and
productivity were significantly related to diversity at most grain
sizes, especially for richness metrics (taxonomic, phylogenetic and
functional richness), but were rarely related to stand factors. These
results imply that stand factors may be the main drivers for forest
biomass and productivity, while diversity may be mainly responsible for
their temporal stability.