Structural equation models linking aboveground biomass and species richness in the primary <i>Pinus kesiya</i> forest.

Abstract

<p>(a) Effects of species richness, soil nutrient regime and stand age on aboveground biomass. (b) Effects of species richness, soil nutrient regime, stand age and climate moisture index on aboveground biomass. (c) and (d) The model with climate moisture index as the linking mechanism. The coefficients are standardized prediction coefficients indicate each path. Solid lines represent significant paths (<i>P</i><0.05) and dash lines indicate non-significant paths (<i>P</i>≥0.05).</p