At the research plot Osankarica on Pohorje we have studied the impacts of heavy forest machinery on forest soils and fine root growth with use of minirhizotrons and ingrowth soil cores. The experiment was established in undistrubed soils, nearby the cart track, within the cart track of the harvester and within the cart track of the harvester and the forwarder. The results show a negative effect of heavy machinery in the cart track, also a few years after its use ended. The results contribute to preparation of background directives for use of forest heavy machinery on differently vulnerable forest sites.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 3147174Forest soils are the major stocks of organic carbon in terrestrial ecosystems.The dynamics of carbon in soil is closely related to soil (micro)organisms, predominantly symbiotic organisms. Key symbionts in forest soils regarding their taxonomic and functional diversity are ectomycorrhizal fungi. In the present study, we have analysed ectomycorrhizal community in beech dominated forest stands using morphological and molecular identification of ectomycorrhizae. Several new types were discovered and briefly described in soil samples taken in beech forest stands, down to 20 cm deep. Based on ectomycorrhizal type abundance, we have calculated the (static)content of total carbon in each of the type. Quantities of carbon stored in ectomycorrhizae were compared with modelled quantities of total carbon in forest soils. We summarise the role and importance of ectomycorrhizae for carbon dynamics in beech dominated forest ecosystems.
F.27 Contribution to preserving/protecting natural and cultural heritage
COBISS.SI-ID: 2467750Within the invited lecture which was part of the session on the influences of ozone on soil processes, the conclusions on the influences of ozone were presented on the changes of mycorrhizal forms and ectomycorrhizal communities, and their implications for hormonal regulation of mycorrhizal plants.
B.04 Guest lecture
COBISS.SI-ID: 3336614The results of the study of the impoacts of heavy forest machinery on fine root growth and forest management were used for preparation of professional textsin the manual entitled Gorest management for forest owners, which is aimed also to forest management planners and policy makers.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 255198464Carbon (C) storage in forest soils represents the largest terrestrial C pool. The sink of the available carbon into the chemical and biological structures in such a heterogeneous ecosystem as forest and, above all, processes in the soil part of C cycle, are poorly understood because of our limited ability to observe them. The release of CO2 through respiration of roots and microorganisms is an important part of carbon fluxes; the same is the role of litter decomposition for C flux in the soil organic matter (SOM). At the Slovenian Forestry Institute several research methods for estimation of parameters needed for modeling of C dynamics in forest soils and used in modeling of C budgets in forest ecosystem have been applied and/or developed. In this article we present a short review of methods for studies of the selected processes in forest soils, especially fine root turnover and litter decomposition.
F.23 Development of new system-wide, normative and programme solutions, and methods
COBISS.SI-ID: 3336102