20.500.12556/RUL-162528 Prispevek globalnih in lokalnih izpustov metana iz govedoreje k podnebnim spremembam Contribution of global and local methane emissions from cattle farming to climate change Metan je kratko obstojen toplogredni plin, ki prispeva h globalnem segrevanju ozračja. Izpuste toplogrednih plinov ocenjujemo po metodi za ocenjevanje izpustov toplogrednih plinov na podlagi potenciala globalnega segrevanja posameznih toplogrednih plinov za obdobje stotih let (GWP100), vendar je ta metoda preveč poenostavljena. Za bolj točno oceno učinka toplogrednih plinov na podnebje se uporablja novejša metoda, ki ocenjuje izpuste toplogrednih plinov na podlagi potenciala globalnega segrevanja posameznih toplogrednih plinov za obdobje stotih let in upošteva obstojnost toplogrednih plinov v ozračju (GWP*). Metoda GWP100 nam prikaže samo dejanske izpuste metana in tudi ostalih toplogrednih plinov, medtem ko metoda GWP* upošteva še čas njihovega obstoja v ozračju. Učinek metana po metodi GWP* je znatno manjši kot po metodi GWP100. Med sabo smo primerjali obe omenjeni metodi in na podlagi pridobljenih podatkov za Slovenijo, Evropsko unijo (EU-27) in svet ugotovili, da je za obdobje 2018-2022 učinek govedoreje na segrevanje podnebja z metodo GWP100 v Sloveniji precenjen za 2,6-krat, v svetu pa za 65 %. Največja razhajanja so bila ugotovljena za Evropsko unijo, kjer metoda GWP100 kaže, da govedoreja podnebje segreva, GWP* pa da ga ohlaja. Methane is a short-lived greenhouse gas that contributes to global warming. Greenhouse gas emissions are typically assessed using the method that evaluates emissions based on the global warming potential of individual greenhouse gases over a hundred-year period (GWP100), but this approach is oversimplified. A newer method, which provides a more accurate estimate of the impact of greenhouse gases on the climate, assesses emissions based on the global warming potential of individual greenhouse gases over a hundred-year period, while also considering the lifespan of these gases in the atmosphere (GWP*) is used to estimate the impact of greenhouse gases on the climate more accurately. The GWP100 method only shows the actual emissions of methane and other greenhouse gases, whereas the GWP* method also takes into account their atmospheric lifetime. The impact of methane according to the GWP* method is significantly lower than with the GWP100 method. We compared the two methods mentioned above and, based on the data obtained for Slovenia, the European Union (EU-27) and the world, we concluded that the impact of cattle farming on global warming for the period 2018-2022 using the GWP100 method was overestimated by 2.6 times in Slovenia and by 65 % in the world. The largest discrepancies were found for the European Union, where the GWP100 method shows that cattle farming warms the climate, while the GWP* method shows that it cools it. kmetijstvo govedoreja toplogredni plini metan izpusti podnebne spremembe agriculture cattle breeding greenhouse gasses methane emissions climate changes true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2024-09-25 07:17:12 2024-09-25 07:17:16 2024-10-03 13:57:08 0000-00-00 00:00:00 2024 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 246773 210115331 44199.pdf 44199.pdf 1 F0F6164961D7D28D49D0F5F80E340FF4 ba4f753d63f57f2292bc8f36b03c013d3516b4b330b0c77aafcf87474b4d9bf1 506e8e89-7afd-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=191873 Biotehniška fakulteta 0 0 0