Fig. 4: Estimated forest-level woody productivity in relation to standing biomass and temperature among 60 plots in eastern Asia.
a Forest-level aboveground woody productivity estimated from original data P (i.e., estimates based on constituent species productivity) against forest aboveground biomass per area. b Estimated woody productivity representing the species response hypothesis, PspecRes, against forest biomass; PspecRes is obtained assuming that all species populations across 60 plots respond to the species productivity-biomass power-law specific to each plot of interest, and that frequency distribution of species biomass of the plot is the same as the distribution of all species populations of all plots. c Estimated woody productivity representing the community structure hypothesis, PcommStr, against forest biomass, where inferred species woody productivity is resampled from a species population with similar biomass drawn from all the plots. In a–c, regression lines indicate mean with 95% confidence intervals are shown for tropical (≥24 °C, red line) versus cool-temperate/sub-boreal forests (<12 °C, blue line) predicted by power-law models. Estimates and coefficient of determination for the power-law model are shown in each panel. d Forest-level woody productivity distribution in five biomes grouped by mean annual temperature (MAT): coloured areas show the distribution of woody productivity with kernel density estimation; inside symbols with bars are mean and 95% confidence intervals of predicted productivity at the forest biomass of 160 Mg C ha–1 (mean across 60 plots). Source data are provided as a Source Data file.
