1. Poročilo o spremljanju stanja gozdov za leto 2025 : vsebinsko poročilo o spremljanju stanja gozdov v skladu s Pravilnikom o varstvu gozdov (2009)Anže Martin Pintar, Pia Höfferle, Janez Kermavnar, Luka Krajnc, Nike Krajnc, Gal Kušar, Lado Kutnar, Tom Levanič, Gal Oblišar, Nikica Ogris, Matej Rupel, Primož Simončič, Saša Šercer, Urša Vilhar, Daniel Žlindra, 2026, elaborat, predštudija, študija Ključne besede: varstvo gozdov, monitoring, stanje gozdov, zdravstveno stanje krošenj, popis povzročiteljev poškodb, meteorološke meritve, osutost dreves, poročila, Slovenija
Objavljeno v DiRROS: 09.07.2026; Ogledov: 65; Prenosov: 33
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2. Poročilo o izvedbi naloge javnega naročila: »Vzorčenje nadzemne žive in odmrle biomase ter tal v gozdovih 2025-2026« MEJNIK 3Andreja Ferreira, Polona Hafner, Luka Krajnc, Gal Kušar, Jaka Križaj, Tom Levanič, Boštjan Mali, Aleksander Marinšek, Iza Petek, Anže Martin Pintar, Mitja Skudnik, Primož Simončič, Polona Vukovič, Daniel Žlindra, 2026, elaborat, predštudija, študija Ključne besede: gozdna statistika, podnebni sklad, NGI
Objavljeno v DiRROS: 19.06.2026; Ogledov: 138; Prenosov: 0
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3. Lesna zaloga drevesnih in grmovnih vrst glede na višinske pasove v Sloveniji : primerjalna analiza in razvojne značilnostiAnže Martin Pintar, Andreja Ferreira, Gal Kušar, Mitja Skudnik, Luka Krajnc, 2026, izvirni znanstveni članek Povzetek: slovenski gozdovi spadajo med vrstno pestrejše, saj v njih raste kar 71 avtohtonih drevesnih vrst. navkljub veliki vrstni pestrosti slovenskih gozdov v lesni zalogi le teh s 60 % prevla-dujeta bukev (Fagus sylvatica) in navadna smreka (Picea abies). Lesna zaloga merskih dreves narašča z nadmorsko viši-no, tako ima zgornji višinski pas največjo lesno zalogo, in sicer 398 m3/ha. obratno od lesne zaloge merskih dreves in grmov se shannon-wienerjev indeks vrstne pestrosti z nadmorsko višino zmanjšuje. podobno je tudi pri shannon-wienerjevem indeksu vrstne pestrosti podmerskih dreves, s tem da je v ni-žinskem pasu nekoliko manjši. delež smreke v lesni zalogi merskih dreves se veča z nadmorsko višino. v nižinskem pasu (do 300 m) znaša 10,2 %, v najvišjem pa 49,4 %. bukev je v zadnjem obdobju postala najpogostejša drevesna vrsta v dele-žu lesne zaloge merskih in podmerskih drevesnih vrst, kar nakazuje tudi na prihodnje večanje lesne zaloge deleža mer-skih dreves bukve. v nižinskem in spodnjem višinskem pasu (nižjem od 700 m) je delež lesne zaloge podmerskih dreves: termofilnih listavcev – predvsem malega jesena (Fraxinus ornus), črnega gabra (Ostrya carpinifolia), tujerodne robinije (Robinia pseudoaccacia) in sencozdržnega belega gabra (Car-pinus betulus) precej večji od deleža lesne zaloge teh drevesnih vrst v lesni zalogi merskih dreves. v merski zalogi podmer-skih grmovnih vrst tako v celotni sloveniji kot tudi v vseh vi-šinskih pasovih prevladuje navadna leska (Corylus avellana), ta prav tako močno prevladuje v vseh višinskih pasovih – naj-večji delež ima v višinskem pasu od 700 do 1.000 m (91,3 %), najmanjšega pa v nižinskem pasu (61,9 %).
Ključne besede: nacionalna gozdna inventura, Slovenija, gozdovi, višinski pasovi, raznolikost, drevesne vrste, grmovne vrste, lesna zaloga
Objavljeno v DiRROS: 04.06.2026; Ogledov: 218; Prenosov: 187
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4. Efficient forest policy design under the EU Green Deal : aligning ecosystem service potential with public valuesKaja Plevnik, Anže Martin Pintar, Anže Japelj, 2026, izvirni znanstveni članek Povzetek: The efficient implementation of forest-related policies under the European Green Deal requires assessing the capacity of ecosystems to deliver ecosystem services (ES) and involving stakeholders in the decision-making process. Public involvement ensures that policies align with local needs, relevant ES are identified, ES supply is optimised, and acceptance of measures is increased. We conducted a nationwide public survey (n = 813) in Slovenia, consisting of three sections: (1) knowledge and perceptions related to ES and the bioeconomy, (2) a discrete choice experiment (DCE) to elicit preferences for possible changes in the supply of forest ES and products based on them (FPS) that support the strategic objectives of the EU Green Deal, and (3) questions on socio-demographics, lifestyle, and consumer behaviour. The results of the DCE, together with respondents’ place of residence using Moran’s I statistic, allowed us to identify areas of distinct preferences (ADP), either positive or negative, for FPS. Based on biophysical indicators, we assessed the potential supply of FPS within and outside ADP and found statistically significant differences. Then we compared potential supply with public preferences (demand) for FPS, which yielded several findings, most notably three cases where higher potential supply of FPS within the ADP coincided with positive preferences in the same ADP: high-quality wood, strictly protected forests, and forest tourism involving non-owners. In all these cases, mobilising additional FPS would benefit communities within the ADP (meeting allocative efficiency), and their high potential supply makes this feasible as well (meeting resource use efficiency).
Ključne besede: forest ecosystem services, public preferences, potential ES supply, spatial matching, EU forest-related policies, policy efficiency
Objavljeno v DiRROS: 09.04.2026; Ogledov: 281; Prenosov: 238
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5. Developing National Forest Inventory-based indicators for monitoring minority ravine forestsAnže Martin Pintar, Janez Kermavnar, Luka Krajnc, Gal Kušar, Lado Kutnar, 2026, izvirni znanstveni članek Povzetek: Ravine forests represent a priority habitat type of the European Natura 2000 network for which empirical data are limited, particularly regarding the influence of stand structure on biodiversity. Assessment of forest habitats can largely be supported by National Forest Inventory (NFI) data, which enable frequent and spatially dense monitoring of the stand conditions and potential vulnerability of forest habitat types. In this study, we established an independent, nationwide classification system of close-to-nature managed ravine forests dominated by different characteristic broadleaf trees, based on stratifying NFI data into homogeneous subtypes. On the basis of tree species composition, which is a basic component in forest habitat types, we identified three subtypes of ravine forests, dominated by Acer pseudoplatanus, Fraxinus excelsior, and Tilia spp. We examined these subtypes using structural, compositional, deadwood, and diversity-related indicators. The Tilia-dominated subtype was more common in the lower altitudinal belt (≤ 502 m), while the Acer-dominated subtype was more prominent in the higher belt (> 502 m). The Acer-dominated subtype predominated in stands with SDI lower than 432, while the Tilia-dominated subtype was relatively more common in stands with higher SDI. In stands with Evenness values lower than 0.3, the Acer-dominated subtype predominated, while in stands with higher Evenness index values, the Fraxinus-dominated subtype was more common. In the Fraxinus-dominated subtype, the volume of standing dead trees was statistically significantly higher than in the other two subtypes (14 m3 /ha compared to 8 m3 /ha) due to the high mortality rate of trees caused by ash dieback. In all three subtypes of ravine forests, we observed a lack of natural regeneration of key tree species, which is crucial for maintaining the favorable conservation status of the habitat type. The observed ranges of structural and compositional attributes, deadwood components, and diversity indices provide empirical reference conditions that reflect the current nationwide variability of ravine forests.
Ključne besede: National Forest Inventory, Tilio-Acerion, characteristic broadleaf trees, forest composition, forest structure, deadwood biomass
Objavljeno v DiRROS: 08.04.2026; Ogledov: 266; Prenosov: 193
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6. Factors supporting a high level of understorey plant diversity in ravine forests (EU priority habitat type)Lado Kutner, Anže Martin Pintar, Aleksander Marinšek, Janez Kermavnar, 2026, izvirni znanstveni članek Povzetek: In addition to being influenced by global drivers, forest herb-layer communities are also shaped by various local factors, such as topography, stand characteristics and soil properties. The responses of ground vegetation were studied in the ravine forests of a Natura 2000 site in eastern Slovenia. A high species richness of 218 plant species was observed in the herb layer, including some woody species. On average, 52.8 different plant species were recorded per plot. Species richness was significantly associated with topographic and forest stand factors, rather than soil characteristics. It was positively associated with altitude and the amount of deadwood and negatively associated with tree height. However, the main predictors for the species composition of the ground vegetation were tree layer cover and soil pH. Among the studied ravine forests, Tilia-dominated stands are characterised by the highest species diversity and the lowest herb-layer cover, indicating a composition of less competitive, site-specific species inhabiting sites with high resource heterogeneity and diverse microhabitats. To preserve the high level of biodiversity of heterogeneous ravine forests and to maintain their favourable conservation status, it is crucial to sustain the natural state of forest soils and stands by implementing appropriate management measures. Such measures may include close-to-nature forest management, which is already being implemented in the studied ravine forests.
Ključne besede: ravine forests, ground vegetation, herb layer, forest stands, topography, soil, Tilio–Acerion, Slovenia
Objavljeno v DiRROS: 23.03.2026; Ogledov: 277; Prenosov: 235
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7. Development and testing of an innovative model for managing ecosystems in the Rački ribniki–Požeg landscape parkAnže Japelj, Andreja Ferreira, Andrej Kobler, Anže Martin Pintar, Kaja Plevnik, Pia Höfferle, 2026, izvirni znanstveni članek Povzetek: The article presents the process of designing and testing an ecosystem-based governance model (EBGM). The EBGM is an innovative and highly participatory approach to addressing management challenges in protected areas. The implementation of the EBGM makes it possible to define a management approach that seeks to balance the interests of various stakeholders, ensure the long-term availability of ecosystem services, and meet the conservation goals of nature protection in important areas. The study focused on Natura 2000 sites affected by climate change (altered precipitation patterns, higher temperatures, more frequent natural disturbances, the spread of invasive alien species, etc.) while also facing management challenges (conflicting stakeholder interests, lack of management capacity, preparation of management plans, etc.). The EBGM consists of six elements, representing phases in the search for shared governance solutions. It incorporates seven fundamental principles and three key management dimensions. The model was developed iteratively and tested in practice through two participatory workshops involving key stakeholders of the Rački ribniki–Požeg Landscape Park, which, at the time of the study, was undergoing a revision of its protection act and the preparation of a management plan. The outcomes of testing the EBGM included the establishment of a stakeholder network, an assessment of the park’s importance for nature conservation and provision of ecosystem services, an evaluation of past and future development trends, and the delineation of management zones for the entire area of the park. The EBGM is sufficiently flexible to be applied in other contexts and under different ecosystem management regimes.
Ključne besede: ecosystem services, protected areas, spatial analysis, participatory approach, ecosystem governance model, management zones
Objavljeno v DiRROS: 27.02.2026; Ogledov: 432; Prenosov: 278
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8. Identification of even- and uneven-aged forest stand structures using freely available national airborne laser scanning data on National Forest Inventory plots in spruce-beech-fir dominated regionsAnže Martin Pintar, 2026, izvirni znanstveni članek Povzetek: Even-aged forests are still predominant across Europe. However, due to the higher resilience and resistance of uneven-aged forests to disturbances and climate change, their proportion is expected to increase both in Europe and globally. The primary objective of this study is to demonstrate the feasibility of distinguishing between uneven- and even-aged forest stand structures on National Forest Inventory (NFI) permanent sample plots solely based on freely available, national airborne low-resolution laser scanning data, without the use of field-based estimates or measurements. Forest structure was described and classified based on canopy closure, dominant height, and canopy height diversity derived from the canopy height model (CHM) and voxel-based metrics calculated from the point cloud. Comparable results were obtained using both approaches for assessing forest structural diversity: canopy height diversity derived from the canopy height model (CHDCHM) and from voxel-based metrics (CHDV). However, differences in vertical diversity between uneven- and even-aged stands were more pronounced when using CHM-based metrics. Therefore, we conclude that in areas with low-density laser scanning data, CHM analysis represents a more suitable method for evaluating the vertical heterogeneity of forest stand structures. The CHDCHM values were estimated at 1.71 for uneven-aged forests, with values of 1.24 and 1.54 observed in mature even-aged forests. In comparison, CHDV values were 2.50 for uneven-aged forests, while mature even-aged forests showed values of 2.18 and 2.24.
Ključne besede: vertical heterogeneity, national forest inventory, canopy height model, voxels, uneven- aged forests, even-aged forests
Objavljeno v DiRROS: 26.02.2026; Ogledov: 325; Prenosov: 250
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9. Končno poročilo analize stanja ekosistemskih storitev in ocene ogroženosti s predlogi ukrepovPia Höfferle, Anže Japelj, Anže Martin Pintar, Andreja Ferreira, Mišo Andjelov, Peter Frantar, 2025, končno poročilo o rezultatih raziskav Ključne besede: ekosistemske storitve, raba prostora, kras, Komen
Objavljeno v DiRROS: 19.02.2026; Ogledov: 443; Prenosov: 0
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10. Pregled in analiza virov podatkov o poseku na nacionalni ravniGal Kušar, Andrej Ficko, Matjaž Guček, Polona Hafner, Luka Krajnc, Anže Martin Pintar, Rok Pisek, Aleš Poljanec, Mitja Skudnik, Špela Ščap, 2025, elaborat, predštudija, študija Ključne besede: posek, gozdna statistika
Objavljeno v DiRROS: 10.02.2026; Ogledov: 672; Prenosov: 150
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