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Povzetek: Life Cycle Assessment (LCA) method was applied to evaluate the environmental impacts of winter road maintenance managed by an innovative road-weather information system and the impacts of vehicles passing the road during the snowstorm event. A case study refers to 10-hour lasting snowstorm event, considering a specific road section and application of a road-weather information management system to help winter road maintenance agency optimizing activities (salt gritting and/or plowing). Reliable information on the timing of the beginning of the snowstorm event affects (1) the activities of winter road maintenance, (2) the mobility of all vehicles passing the road, and (3) the fuel consumption of the vehicles. Since activities are optimized in case of preventive operation of winter road maintenance, less salt is needed overall. The road remains free of snow cover in case of preventive winter road maintenance operation, meaning that passenger cars and trucks pass the road at normal speed, without undesirable acceleration and braking caused by wheels slipping if snow accumulates on the road. Fuel consumption of vehicles passing salted and snow-free road remains unchanged, while fuel consumption increases in case of snow cover. Reduction of environmental burdens in case of such optimized winter road maintenance operation, is shown in this case study. The overall results of the comparative LCA analysis showed that the use of the road-weather information system in road traffic allows for as much as 25% reduction of environmental footprints. In the scenario where the winter service does not use information system the winter service also uses 40% more salt, which is also related with additional environmental impacts.
Ključne besede: LCA, okoljski odtisi, cesta, snežne razmere, preventivno delovanje, promet, poraba goriva, varnost, LCA, environmental impacts, road, snow cover, preventive operation, traffic, fuel consumption, safety
Objavljeno v DiRROS: 11.12.2023; Ogledov: 166; Prenosov: 104
Celotno besedilo (19,01 MB)
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Ključne besede: gospodarjenje z gozdovi, gozdna rastišča, škoda po divjadi, paša v gozdu, promet z lesom, gojitveni načrti, sečno-spravilni načrti, informacijski sistem
Objavljeno v DiRROS: 10.10.2020; Ogledov: 1536; Prenosov: 447
Celotno besedilo (75,25 KB)

Povzetek: Lišaje smo uporabili kot pasivne odzivne bioindikatorje za ugotavljanje onesnaženosti zraka na lokacijah ob izbranih slovenskih cestah z različno gostoto prometa. S popisi na različnih oddaljenostih od roba cestišča na vsaki izmed izbranih lokacij smo ugotavljali tudi vplivno območje emisij iz prometa na kakovost zraka. Izbrali smo dve različni metodi popisov, in sicer preprosto oceno kakovosti zraka na podlagi številčnosti in pokrovnosti različnih rastnih oblik lišajev (SI metoda) ter zahtevnejšo metodo, ki temelji na beleženju vrst lišajev (metoda VDI). Ugotovili smo, da tudi na lokacijah z zmerno gostoto prometa (povprečni dnevni promet < 20.000) emisije iz prometa vplivajo na kakovost zraka, a le v ozkem pasu ob cesti (< 100 m), saj vrstna sestava lišajev, število različnih vrst ter tudi izračunani indeks izračne čistosti po obeh izbranih metodah kažejo na to, da je na izbranih lokacijah vpliv le v 1. popisnem pasu, torej tik ob cestah, a z oddaljenostjo od ceste hitro upada.
Ključne besede: lišaji, promet, popisi lišajev, bioindikatorji, Slovenija
Objavljeno v DiRROS: 12.07.2017; Ogledov: 4508; Prenosov: 2236
Celotno besedilo (676,59 KB)