| Popis: |
The aim of this study was to evaluate silvicultural alternatives for conversion of secondary plantations of Norway spruce [Picea abies (L.) Karst] in Denmark. To enable simulations that could possibly aid decision making for policy as well as for forestry practice, the German growth simulator SILVA was calibrated for Norway spruce and beech in Denmark. Calibration comprised changes to the main driving functions of SILVA, such as the height and the diameter growth potentials of individual trees. The calibrated model was evaluated against observed growth for a number of sample plots. Scenarios for different methods for conversion of Norway spruce on former heathland were calculated and analysed, including uniform shelterwood, irregular shelterwood, and target diameter harvest. The predictions of growth and regeneration did not show any limitations to a successful conversion, but resulted in different growth patterns and species compositions. |
