Humification
What remain of the decomposed litter and faeces material are the humification products that are transferred to the humus pool, CLitter1 and 2→Humus and CFaeces→Humus. These fluxes depend on the humification fraction in the source pools, fh,l1:
where fcons,l1 is parameter, f(CNl1) and f(CLitter1) are response functions and Mpotcons is the potential microbial consumption as described above. The parameters fh,l2 and fh,f, give the fluxes from the litter 2 and faeces pools respectively.