Fig. 1: Distribution and comparison of annual global soil respiration (RS) and gross primary productivity (GPP).
From: Historically inconsistent productivity and respiration fluxes in the global terrestrial carbon cycle
a Distributions of global gross primary productivity (GPPlit and GPPRs); b Joint distribution of annual global soil respiration (RS) and gross primary productivity (GPP); c Distribution of global soil respiration (Rslit and RsGPP) estimates. Two distributions are shown: literature-reported GPP (GPPlit) versus GPP implied by those RS estimates (GPPRs); or literature-reported RS (Rslit) versus RS implied by those GPP estimates (RsGPP); Distributions are based on 10,000 random draws of the underlying estimates from published literature (summarized in supplementary Fig. 8). The red arrow represents from GPPlit to calculate RsGPP, the light-blue arrow represents from Rslit to calculate GPPRs, and the blue dots and line represent RS from the random forest model developed in this study and based on that to calculate the GPPRs. The arrows and direction corresponding to the arrows in supplementary Fig. 1.
