When extracting raw materials from the forest we also extract nutrients. This usually only occurs to a limited degree since nutrients are primarily found in branches and needles, which are left behind on the ground. However, when branches and treetops — which are used in the production of bioenergy — are harvested, the amount of nutrients extracted increases. It is for this reason that Sodra is now developing a service to return nutrients to the forest in the form of bio-ash after harvesting branches and treetops.
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