A study of protection efficiency of beech-dominated forests in the Soteska gorge in NW Slovenia, where a main state road and railway are at risk, was performed. Forest structure data was obtained from 47 sample plots and detailed descriptions of forest stand. TopRunDF model was used for delineation of debris flow influential areas. For rock-fall hazard assessment we used RockyFor3D model. For long term protection efficiency, regeneration patches must be established in even-aged stands. However, on some release areas – debris fans, abundance of coarse material caused dieback of forest. It must be salvaged from torrent streams to avoid future debris flow expansion. In some areas silvicultural measures cannot provide sufficient protection of road and railway. In those areas we suggest application of technical measures.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 3261350The protective role of forests against avalanches and rockfalls is well recognized in the world as well as in Slovenia. Its importance is increasing as a result of recent catastrophic events. The detailed analysis of protection forests has not been carried out yet. In the article orographic, vegetation and stand characteristics of the protective forests are presented, and management of protection forests in Switzerland as an example of an active approach for improving the protective effects of forest against different natural hazards is described. Some suggestions for improving forest management in protection forests in Slovenia are presented.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 32472621The presented completion of silvicultural management is based on natural hazard type, forest type (site and stand conditions) and assessment of infrastructural object endangerment from natural hazards. Such an assessment enables more rational decision making regarding management or non-management and eases the silvicultural planning. This planning should consider the type (non-management, only cutting of trees, cutting and extraction of trees) and mode of (technical aspect) measures, long-term spatiotemporal dynamics of measure, and cost-benefit analysis.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 3143078Within the conference a round table was organized, where various forestry experts defined main problems and presented suggestions for the protection forest legislation changes. Management of protection forests can be stimulated with focused activities within several fields: 1) Modification of protection forest categorization, 2) Completion of criteria for protection forest (direct and indirect) delineation, 3) Improvement of inventory methods, 4) Measures in protection forests (direct and indirect), 5) Execution of measures and control, 6) Co-financing system, 7) Education and public relations and 8) Management of protection forests (direct and indirect) is included in system of integral natural hazard mitigation.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 3485606Study of harvesting technology indicates influence of timber quality structure and high costs of wood harvesting (cutting and extraction of trees) on economical aspect. Positive outcome (in protection forest) was confirmed when tree volume exceeded 1 m3, except if the skidding distance was maximal. The damages on the edge trees which remained in the stand were assessed. We confirmed lower frequency of tree damages when ‘’Gap type cutting’’ was used compared to other types (stand thinning) of tree-length logging. We recommend this technology on areas where ecological aspect is not threatened and the use of skidding corridors (e.g. gaps) is consistent.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 3562662