Rotation time
In forestry, the rotation time is the expected period from the establishment of the stand to the end use by logging. The term is closely tied to a single forestry; In today's forestry practice in Central Europe, due to the lack of a better calculation basis, it is used solely as a calculation variable - in particular for tax assessment, which is also carried out annually for an industry that thinks in centuries.
The rotation times depend on the tree species, the location and the operational objectives and are therefore variable. Examples in normal operation would be a rotation period of 80 years for the relatively fast growing spruce and a rotation period of 180 years for the slower growing sessile oak .
The rotation times can be determined using various criteria (examples):
- Technical turnaround time
- Rotation time of the largest forest cleaning yield (the highest profitability)
- Rotation time of the highest soil clean yield (financial rotation time)
- Rotation time of the highest mass yield
If, as in the last case, the production target only depends on the biomass yield, the rotation times are significantly shorter. In so-called short rotation plantations , stocks are driven off after 3 to 10 years.