Wpływ trzebieży na zróżnicowanie strukturalne drzewostanów sosnowych

The impact of two different kinds of thinning on structural diversity of pure, even−aged Scots pine stand, is analysed. The real thinning, performed in the field, is compared with simulated computer thinning. Both thinnings make use of the same set of future (elite) trees, but differ in respect to method of marking of trees for removing. To determine the impact of thinning mode on stand structure, the overall diameter distributions, as well as some structural indices (diameter differentiation, dominance index, contagion index), before and after thinnings, are analysed and compared.