Development, Role and Formation of the Management Class an an Instrument for Planning

1989

S. 27-58

3 Abb., 30 Lit. Ang.

Unselbständiges Werk

200047404

The role and formation of the management class have to be looked at from the dialectic point of view. Namely the classes change in time as a consequence of the development itself and the entire profession, as well as due to the more numerous demands on the forests. The latter is also the reason for the great variations among European countries. The role of the management class can be defined within each planning phase of the skeleton planning and silviculture, that is from surveying to keeping records. Each of these phases represents specific demands when forming the classes. The extremely strict demands on classes within a unit, are a result of the analysis of previous management, while for regional classes they are a result of goal determination, guideliness, capability, and silvicultural operations. The criteria for the formation of classes within a unit are: site, stand characteristics and economic goals (functions). In the first case the basis is the phytogenic classification. In most case it as a question of subassociations - under the condition that the differences among individual sites are visible, recognizable to foresters and that the ecological differences among sites result in economically important characteristics of the plant associations (stability, fertility, tree structure ...). When classifying according to stand, the following indicators are important: tree composition, structure, functioning, silvicultural problems, development characteristics. The function as a criterion is present particularly where one of the functions dictates forest management. To avoid a too high number of classes and to suitably evaluate individual critera, we have to take the 4 principles which are superior to the criteria, into account: rationalization, evaluation, homogeneity (heterogenesis) and comparability within the area. For local classes, silvicultural problems are the most important criterion, because classes are an instrument for the orientation of the evolution of forest with a simultaneous solution of silvicultural problems. Classes have to be defined only generally, from the site point of view (similar production potential), they have to have similar tree composition and structure, and through this also a similar way of functioning. The formation of classes is a constituent part of the planning process and therefore has to be a result of either the area or the unit.