Fig. 15

Process flow diagram (PFD) of Wood Harvesting and Storage with Wood Vault. The Natural Processes and the Engineered processes are clearly separated, defining the engineering system boundary. The two types of wood sourcing (wood residual reception or Type-A vs. harvesting or Type-B) correspond to somewhat different system boundaries. WHS takes advantage of ‘free’ photosynthesis and a simple engineering process to minimize wood decay, thus offering an effective, efficient, and low-cost Nature-Engineering combo solution for semi-permanent carbon sequestration