[An informatic management model for Norway spruce planations in Belgian Ardennes] | Un modele de gestion informatise pour les plantations d'epicea commun en Ardenne belge
2000
Lejeune, P. | Thibaut, A. | Pauwels, D. (Faculte universitaire des Sciences agronomiques, Gembloux (Belgium) Unite de Gestion et Economie forestieres)
Norway spruce (Picea abies (L.) Karst.) is the first forest species devoted to production in the Wallonian region. Many private and public foresters have to face management problems for these stands : rotation length, definition of thinning type, harvesting scheduling, future income and profitability estimation. The management model is made of two components : on one hand, a growth model predicts stand growth in connection with site index and silvicultural parameters, and, on the other hand several modules compute silvicultural indicators (stability index, mortality rate, assortments, ...) and financial indicators (prediction of future incomes and profitability). The management model allows to test and compare in a flexible way different scenarios applicable to stands described by their initial stage (number of stems and basal area per hectare, dominant height). These tools are integrated in a spreadsheet application using Excell, which makes it very easy to use by the forest manager who wants to base his management on objective criteria.
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