21. Analiza izbranih drevesnih modelov razvoja gozdov, primernih za modeliranje na velikoprostorski ravni, in možnosti njihove uporabe v SlovenijiJernej Jevšenak, Boštjan Mali, Mitja Skudnik, 2023, original scientific article Abstract: Prispevek obravnava drevesne modele razvoja gozdov, ki so pomembno orodje pri odločanju, upravljanju in strateških odločitvah na področju gospodarjenja z gozdovi. V Sloveniji smo šele v zadnjih letih pričeli s sistematičnim razvojem področja modeliranja gozdov, ki vključuje razvoj matričnega populacijskega modela, testiranje izbranih modelov iz tujine ter razvoj posameznih komponent modelov. Namen prispevka je predstaviti področje empiričnih drevesnih modelov za modeliranje razvoja gozdov na velikoprostorski ravni. Podrobneje predstavljamo uveljavljene metode za modeliranje posameznih komponent drevesnih modelov, kot so debelinska in višinska rast, razvoj krošnje, mortaliteta ter vrast in pomlajevanje. Opravili smo presojo primernosti izbranih drevesnih modelov z vidika možnost njihove uporabe v Sloveniji. Ugotavljamo, da imajo modeli SILVA, WEHAM, MASSIMO in CALDIS največje možnosti za uporabo v Sloveniji, saj so vsi primerni za različne gozdne tipe in mešane gozdove z raznomerno zgradbo, ki prevladujejo v Sloveniji. Poleg testiranja obstoječih modelov predlagamo razvoj novih modelov, prilagojenih raznomernim in mešanim sestojem v Sloveniji. Predlagamo tudi razširitev nabora kazalnikov pri gozdnih inventurah ter dodatne meritve značilnosti dreves, npr. lastnosti krošenj, ki bi razširile možnosti modeliranja razvoja gozdov v Sloveniji. V zaključkih razpravljamo tudi o možnosti uporabe strojnega učenja na področju modeliranja razvoja gozdov, saj bi tovrstni modeli lahko predstavljali naslednjo generacijo modelov.
Keywords: modeliranje, razvoj gozda, velikoprostorska gozdna inventura, stalne vzorčne ploskve, simulator razvoja gozdov, napovedovanje, gozdarska politika
Published in DiRROS: 27.06.2023; Views: 1338; Downloads: 612
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22. Winning combination of Cu and Fe oxide clusters with an alumina support for low-temperature catalytic oxidation of volatile organic compoundsTadej Žumbar, Iztok Arčon, Petar Djinović, Giuliana Aquilanti, Alenka Ristić, Goran Dražić, Janez Volavšek, Gregor Mali, Margarita Popova, Nataša Zabukovec Logar, Nataša Novak Tušar, Albin Pintar, Gregor Žerjav, 2023, original scientific article Published in DiRROS: 23.06.2023; Views: 503; Downloads: 205
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23. Environmental acceptability of geotechnical composites from recycled materials : comparative study of laboratory and field investigationsMarija Đurić, Vesna Zalar Serjun, Ana Mladenovič, Alenka Mauko Pranjić, Radmila Milačič, Janez Ščančar, Janko Urbanc, Nina Mali, Alenka Sešek Pavlin, Janez Turk, Primož Oprčkal, 2023, original scientific article Abstract: The environmental properties of three geotechnical composites made by recycling wastes were investigated on a laboratory scale and in the field with the use of lysimeters designated for the revitalization of degraded mining sites. Composites were prepared by combining the mine waste with paper-mill sludge and foundry sand (Composite 1), with digestate from municipal waste and paper ash (Composite 2), and with coal ash, foundry slag and waste incineration bottom ash (Composite 3). The results of laboratory leaching tests proved that Composites 1 and 3 are envi- ronmentally acceptable, according to the legislative limits, as the potentially hazardous substances were immobilized, while in Composite 2, the legislative limits were exceeded. In the field lysimeters, the lowest rate of leaching was determined for optimally compacted Composites 1 and 3, while for Composite 2 the leaching of Cu was high. This study proved that optimally installed Composites 1 and 3 are environmentally acceptable for use in construction as an alternative to virgin materials, for the revitalization of degraded mining sites or, along with Composite 2, for closure operations with landfills. In this way, locally available waste streams are valorised and channelized into a beneficial and sustainable recycling practice.
Keywords: waste, recycling, lysimeter, potentiali hazardous substances, immobilization, revitalisation, environmental, open access
Published in DiRROS: 29.05.2023; Views: 365; Downloads: 266
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24. Development of groundwater flow models for the integrated management of the alluvial aquifer systems of Dravsko polje and Ptujsko polje, SloveniaAda Vengust, Anja Koroša, Janko Urbanc, Nina Mali, 2023, original scientific article Abstract: With increasing exploitation of groundwater resources and implementation of various activities in their recharge areas, it is vital to conduct a comprehensive assessment of aquifers to ensure their conservation and sustainable management. In the present study, we used a comprehensive approach to conceptualise and identify the functioning of two connected aquifer systems in north-eastern Slovenia: the Quaternary porous aquifers Dravsko polje and Ptujsko polje. The study presents the conceptual models of both aquifers and their interconnectedness using separate mathematical-numerical models with the aim of ensuring an integrated management of these alluvial aquifer systems. It also highlights the importance of understanding connections between such systems for simulating groundwater flow and transport of different contaminants.
Keywords: hydrogeological model, Modflow model, aquifer geometry, aquifer recharge, modelling
Published in DiRROS: 27.03.2023; Views: 506; Downloads: 169
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25. Dizajn trajnih raziskovalnih ploskev za spremljanje zalog ogljika za vse rabe zemljišč : LIFE IP CARE4CLIMATE (LIFE17 IPC/SI/000007)Gal Kušar, Boštjan Mali, 2022, treatise, preliminary study, study Keywords: raba zemljišč, monitoring, zaloge ogljika, skladišča ogljika, vzorčenje
Published in DiRROS: 03.02.2023; Views: 447; Downloads: 118
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27. Pridobivanje podatkov o spremembah zalog ogljika v živi in odmrli biomasi v gozdovih : vmesno poročilo (Mejnik 3) za: Javno naročilo: 430-204/2021/19Mitja Skudnik, Polona Hafner, Andrej Grah, Jernej Jevšenak, Gal Kušar, Luka Krajnc, Tom Levanič, Boštjan Mali, Anže Martin Pintar, Janez Zafran, 2022, treatise, preliminary study, study Keywords: odmrla lesna biomasa, temeljnica, površina gozda, lesna zaloga, vzorčne ploskve, starost gozdov, kakovost stoječih dreves
Published in DiRROS: 17.01.2023; Views: 628; Downloads: 0 |
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29. Lesni izdelki v Sloveniji ponazarjajo vir ponora ogljikaŠpela Ščap, Boštjan Mali, 2022, professional article Keywords: lesni izdelki, ponor ogljika, skladiščenje ogljika, žagan les, lesne plošče, furnir, pozitiven trend
Published in DiRROS: 15.09.2022; Views: 657; Downloads: 194
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30. Synoptic risk assessment of groundwater contamination from landfillsSonja Cerar, Luka Serianz, Katja Koren, Joerg Prestor, Nina Mali, 2022, original scientific article Abstract: Waste management in Europe has improved in recent years, reducing the amount of waste disposed at landfills. However, there are still many landfills in the countries. It is well known that landfills that do not have measures in place to control leachate entering groundwater can contaminate groundwater long after the landfill is closed. Collecting monitoring results from all landfills allows permitting and management agencies to improve action plans. This relies on a synoptic risk assessment that allows prioritization and milestones to be set for required actions. The developed method of synoptic risk assessment is based on a conceptual model of the landfill and the results of chemical groundwater monitoring tested at 69 landfills in Slovenia. The study confirms that most landfills have a direct or indirect impact on groundwater quality. All landfills were classified into three priority classes on the basis of the synoptic risk assessment. The results show that a total of 24 landfills have a clearly pronounced impact on groundwater. A total of 31 landfills have a less pronounced impact due to the favorable natural attenuation capacity of the soil or the technically appropriate design of the landfill itself. A total of 14 landfills have a less pronounced or negligible impact on groundwater.
Keywords: conceptual model, synoptic risk assessment, landfill, groundwater, chemical analysis
Published in DiRROS: 19.07.2022; Views: 613; Downloads: 319
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