Site potential is depicted by the Maximum Above Ground Biomass (also known as M) spatial layer within the Full Carbon Accounting Model (FullCAM). The Long-Term Average Forest Productivity Index (FPIavg) spatial layer within FullCAM represents the sum of key site-factors driving growth toward M (e.g. soil type, fertility and climate). Both layers are embedded within FullCAM and are provided here to facilitate extraneous analysis.