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Conference paper2013Peer reviewed

Optimal allocation of harvest levels to forest estates within a geographically scattered forest holding

Holmstrom, H.; Berglund, M.; Wikstrom, P.


SFastAB holds approx. 25 000 hectares of forest land in 26 forest estates, scattered all over Sweden. These forests are managed by approx. 15 foresters, as geographically scattered as the forests. Here, a forest management problem occurs when the foresters make decisions considering not only his/her estate(s), but also considering all other estates in the forest holding. The decision support system Heureka PlanWise was used to derive a strategic management plan, economically optimal with sustainable harvest levels, for the entire holding. The average harvest level, for a planning horizon of 100 years, was 5.3 m(3)sk/ha, yr. For a forest owner with a large holding but without any industries, even-flow constraints regarding harvest levels are still of importance. Nevertheless, an uneven flow can be accepted at the estate level as long as this is beneficial for the entire holding. This means that a forester of a certain estate is ready to increase or decrease the harvest level, allowing for increasing or decreasing harvest levels at the other estates. The aim of this study was to rank the estates according to their relative need of harvest. In order to prioritize harvests among the estates, a harvest priority value was derived as the harvest level (m(3) sk/ha, yr) divided by the current estates average net growth (m(3)sk/ha, yr). The most prioritized estate showed a relative harvest of 2.2 in the first five-year period, i.e. suggesting more than twice the growth to be harvested (alas, dropping to 0.3 in the second five- year period). Several estates showed a low priority with relative harvests between 0.06 and 0.12 in the first five-year period. In practice, the acquired results lead to a minor increase in suggested harvests at the holding level, by approx. 5%. For some of the estates though, major changes in the harvest levels were outlined, for some as much as three times the supposed harvests (before any analyses).


Forestry; Decision support system; Long-term forest management planning; Sustainable harvest levels; Even-flow constraints; Optimization

Published in

Title: Implementation of DSS tools into forestry practice. Reviewed conference proceedings
ISBN: 978-80-228-2510-8
Publisher: Technical University in Zvolen, Slovakia


1st International Scientific Conference on Implementation of DSS Tools into the Forestry Practice, MAY 10-12, 2012, Zvolen, SLOVAKIA