Projects / Programmes
Ecological restoration of natural disturbances in forests
Code |
Science |
Field |
Subfield |
4.01.01 |
Biotechnical sciences |
Forestry, wood and paper technology |
Forest - forestry |
Code |
Science |
Field |
B430 |
Biomedical sciences |
Sylviculture, forestry, forestry technology |
Code |
Science |
Field |
4.01 |
Agricultural and Veterinary Sciences |
Agriculture, Forestry and Fisheries |
natural disturbance, windbreak, snowbreak, forest, fire, insect infestation, forest restoration, salvage logging, risk assessment, risk mapping, silviculture for stability, secondary succession, planting, sowing, multicriteria decision support model
Researchers (24)
no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
1. |
29881 |
Tomaž Adamič |
|
Technical associate |
2011 - 2014 |
32 |
2. |
02749 |
PhD Marko Bohanec |
Computer science and informatics |
Researcher |
2011 - 2014 |
639 |
3. |
10801 |
PhD Andrej Bončina |
Forestry, wood and paper technology |
Researcher |
2011 - 2014 |
517 |
4. |
11958 |
PhD Robert Brus |
Forestry, wood and paper technology |
Researcher |
2011 - 2014 |
743 |
5. |
08376 |
PhD Igor Dakskobler |
Biology |
Researcher |
2011 - 2014 |
701 |
6. |
15660 |
PhD Marko Debeljak |
Biology |
Researcher |
2011 - 2014 |
313 |
7. |
11253 |
PhD Jurij Diaci |
Forestry, wood and paper technology |
Head |
2011 - 2014 |
716 |
8. |
11130 |
PhD Sašo Džeroski |
Computer science and informatics |
Researcher |
2011 - 2014 |
1,204 |
9. |
27615 |
PhD Andrej Ficko |
Forestry, wood and paper technology |
Technical associate |
2011 - 2014 |
166 |
10. |
29426 |
PhD Dejan Firm |
Biotechnical sciences |
Researcher |
2011 - 2014 |
57 |
11. |
26070 |
PhD Kristjan Jarni |
Forestry, wood and paper technology |
Technical associate |
2011 - 2014 |
98 |
12. |
32063 |
Petra Kajdiž |
Biotechnical sciences |
Junior researcher |
2011 - 2014 |
5 |
13. |
28501 |
PhD Matija Klopčič |
Biotechnical sciences |
Researcher |
2011 - 2014 |
176 |
14. |
27605 |
PhD Milan Kobal |
Forestry, wood and paper technology |
Technical associate |
2011 - 2014 |
350 |
15. |
20842 |
PhD Aleksander Marinšek |
Forestry, wood and paper technology |
Researcher |
2011 - 2012 |
387 |
16. |
27544 |
PhD Thomas Andrew Nagel |
Biotechnical sciences |
Researcher |
2011 - 2014 |
234 |
17. |
25666 |
PhD Aleš Poljanec |
Forestry, wood and paper technology |
Researcher |
2011 - 2014 |
249 |
18. |
24368 |
PhD Andrej Rozman |
Forestry, wood and paper technology |
Researcher |
2011 - 2014 |
113 |
19. |
21043 |
PhD Dušan Roženbergar |
Forestry, wood and paper technology |
Technical associate |
2011 - 2014 |
231 |
20. |
30432 |
Tihomir Rugani |
|
Technical associate |
2011 - 2014 |
36 |
21. |
10264 |
PhD Primož Simončič |
Forestry, wood and paper technology |
Researcher |
2011 - 2014 |
702 |
22. |
32898 |
PhD Tina Simončič |
Forestry, wood and paper technology |
Technical associate |
2011 - 2014 |
82 |
23. |
22592 |
PhD Urša Vilhar |
Forestry, wood and paper technology |
Researcher |
2011 - 2014 |
420 |
24. |
22279 |
PhD Bernard Ženko |
Computer science and informatics |
Researcher |
2011 - 2014 |
172 |
Organisations (4)
Abstract
The strength and frequency of extreme weather events has been increasing in recent decades worldwide. At the same time, forests are becoming less resistant to natural disturbances (i.e. windthrow, fire, insect outbreaks) due to changes in forest structure and composition, environmental pollution, decreased tending, and ageing of forests. More than a third of the annual cut in Europe and Slovenia is for sanitary reasons, mainly due to natural disturbances. In the future, neglected tending and climate change will almost certainly result in more problems. To lessen the impacts on ecological and economical functions of forests, it is necessary to act in the areas of: 1) disturbance prevention (e.g. natural disturbance risk mapping and tending measures for stability); 2) improvement of post-disturbance forest restoration; and 3) effective decision-making after disturbance events. Restoration is associated with risks to property and people, and significant costs, so that all actions have to be optimized. However, in Slovenia research in this area is limited. Moreover, past forest restoration efforts have not been evaluated over longer time periods. Most of the research abroad deals with the vulnerability and post-disturbance restoration of even-aged conifer plantations. The originality of the proposed project is the study of post-disturbance restoration of natural forests as well as conifer plantations, which have been subject to gradual conversion for decades, resulting in multi-layered, mixed stands with advance regeneration. Therefore, our results will significantly contribute to the development of close-to-nature forestry in Europe. In addition, conventional post-disturbance forest restoration includes total salvage logging and planting, although tree islands, woody debris, pioneer trees and advance regeneration are vital for restoration of the site, stand and biodiversity. Therefore, in some cases "non-intervention" may be economically and environmentally more appropriate than salvage logging and planting, e.g. in less accessible forests with low timber value with low risk for forest health, and where forest protective functions are less important. Efficient forest restoration requires coordinated action to ensure forest health, multifunctionality, and ecosystem services, while also prevent economic losses. Optimal decisions regarding forest restoration methods can be improved by multicriteria decision support models, which are still poorly developed in this field. The project objectives are to: 1) examine the factors that influence vulnerability of forests to natural disturbance, forest disturbance risk mapping and to propose measures for improving forest stability (work package 1 - WP1); ??2) assess ecological and economic factors associated with salvage logging versus non-intervention (WP2); 3) compare natural regeneration and planting (WP3); 4) develop a multicriteria decision support model for planning (WP4); and 5) synthesize and transfer the results to multiple stakeholders (WP5). Effective post-disturbance forest restoration requires participation of experts from various disciplines; therefore the project is interdisciplinary and brings together all the key research organizations dealing with forest ecosystems in Slovenia. The project is important for the forestry practice because it will improve methods of disturbance prevention and forest restoration, enhance decision-making, and facilitate knowledge transfer into practice through conferences and publications. The project will result in: 1) improved management of natural disturbance events (public administration), 2) significant reduction in costs for artificial regeneration, and 3) advancement of nature conservation (natural regeneration, abandonment of salvage logging). With the involvement of international centres for forest restoration and complementary international projects, we expect the project to be of major importance in the European context.
Significance for science
The ecological role of natural disturbances, however, is a stark contrast to the destructive nature of disturbances from the perspective of economics and protective functioning. As a result, in forested areas worldwide, salvage logging and artificial regeneration are commonly practiced to recover economic value of dead trees, increase future economic value, and re-establish protection functions following natural disturbances. If predictions of increased frequency and severity of natural disturbances due to climate change prove true, widespread salvage logging and forest restoration will be a likely outcome. As such, gaining a better understanding of the ecological, social, and economic impacts of natural disturbance and forest restoration remains an important task for foresters and ecologists alike. Project provided several important conclusions for forest management after disturbances in the future. Assessing the spatial extent and type of disturbances in Slovenia is important for comparison of current situation and future trends on regional and European level. We contributed important findings regarding effects of salvage logging after medium scale disturbances (that are the most common in central part of Europe) in mixed beech forest (main forest type this part of Europe), since there are no such studies. Results show there were no significant differences on forest restoration between salvage logging and site without intervention. On the karst area (which is a part of Mediterranean, where forest fire is a major disturbance) no intervention was better option than machine harvesting, which damages shallow soils. Comparison of natural and artificial restoration indicated that planting is important on rich fertile soils and on site where protection functions of forest are important, while on several other sites natural regeneration was sufficient. These conclusions are important for whole central Europe that has similar climate conditions. We also discovered that overabundant ungulate populations have negative effect on restoration of palatable broadleaves, which was also reported, form other countries. We were the first to establish decision support model for restoration technique after disturbance. ForestMAS model that simulates secondary succession consists of numerous ecological parameters of tree species as well as environmental factors (exposition, inclination, soil depth) and is therefore less "mechanistic" than similar models and better reflects ecological conditions.
Significance for the country
Several project results give an insight in effect and extent of different disturbances in last period, success of different restoration techniques (natural, artificial, no intervention) after disturbances and criteria in process of decision for restoration technique and modelling succession after disturbance. Project conclusions were implemented in curriculum of lectures and field excursions on Department of Forestry. Developed ForestMAS model simulates secondary succession of forest after planned harvests, land abandonment or disturbances. Multicriteria decision support model uses less of the data input and is therefore useful when deciding for optimal restoration technique in practise. Project involved numerous (17) diploma (BSc and MSc) theses and a PhD of a young researcher. Results were directly presented to public via interviews and public statements after severe sleet storm that hit Slovenian forests in 2014. We co-organized the conference on forest restoration after disturbances at Slovenian Forestry Institute in 2012. We cooperated at training for restoration after sleet storm in Idrija. Restoration methods were presented for forest owners at farmers fair AGRA in Gornja Radgona. We collaborated on forest restoration training in Germany (Baden-Württemberg). We published several professional and scientific papers. Another four scientific papers will be published, two of them are already in peer review process. PhD thesis is in the phase of conclusion. Conclusions can be directly implemented in forest practise. Results regarding restoration after fires in Kras area, sanitary logging after disturbances in mixed beech forest, experience regarding planting, direct seeding and natural regeneration can be already implemented after next disturbance. Implementation can drastically reduce the costs of artificial regeneration.
Most important scientific results
Annual report
2011,
2012,
2013,
final report,
complete report on dLib.si
Most important socioeconomically and culturally relevant results
Annual report
2011,
2012,
2013,
final report,
complete report on dLib.si