Forestryadaptation measures at the decline of Norway Spruce (Picea abies karst.) stands as exemplified by the Silesian Beskids, CR

Abstract

At the beginning of this century, particularly after 2003, decline of Picea abies occurred at Forest District Jablunkov in the Silesian Beskids. This decline is of the complex character disease caused by the synergetic effects of abiotic, biotic and anthropogenic factors. Under conditions of climatic changes, it is possible to expect that similar episodes will repeat and appear also in other regions. Forestry will have to respond to them by changes in forest management. Measures proposed and discussed in this paper can be a starting point in their basic principles for other similar regions. Fundamental spheres of possible measures are as follows: chemical adaptations of the soil environment, i.e. liming or fertilization (if to realise them or not), changes in the species composition (particularly the rate of the decrease of Picea abies, participation of Fagus sylvatica and increasing the diversity of tree species), modification of the rotation (decrease) and regeneration period (increase).