Fig. 4: The productivity-tree density relationship is contingent upon mean DBH. | Communications Biology

Fig. 4: The productivity-tree density relationship is contingent upon mean DBH.

From: Global patterns of tree density are contingent upon local determinants in the world’s natural forests

Fig. 4: The productivity-tree density relationship is contingent upon mean DBH.

Graphical representation of tree density as a function of the interaction between mean tree size (Mean DBH) and productivity calculated as 0.232NPP + 0.237CEC (being NPP the climatic Net Primary Productivity, and CEC the Cation Exchange Capacity). Shadowed areas represent the 95% confidence intervals of model predictions. The right panels display the distributions of mean DBH and productivity, respectively. Results support the idea that the positive influence of productivity on tree density reinforces towards higher values of mean tree size.

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