257 research outputs found

    Lastniki gozdov in prodaja toplote iz lesa

    Get PDF

    Farmers and forest owners as heat sellers

    Get PDF

    Drva in lesni sekanci : kakovost lesnih goriv

    Get PDF

    Introduction

    Get PDF

    Computer model for the assessment of socio-economic and environmental aspects of biomass use - a comparison of results obtained in two selected regions in Slovenia and Croatia

    Get PDF
    Lesna biomasa je pomemben obnovljiv vir energije, ki ima lahko ┼ítevilne pozitivne socialno-ekonomske in okoljske vplive. V ─Źlanku ┼żelimo predstaviti novo ra─Źunalni┼íko aplikacijo za oceno 15 socialno-ekonomskih in okoljskih vplivov pove─Źane rabe lesne biomase. Ra─Źunalni┼íka aplikacija omogo─Źa lo─Źeno oceno vplivov glede na mesto nastanka v tehnolo┼íki verigi pridobivanja, predelave in rabe lesne biomase. Predlagana aplikacija omogo─Źa oceno jakosti naslednjih socialno-ekonomskih in okoljskih vplivov: nova delovna mesta, pove─Źan prihodek v regiji, dodatne aktivnosti na kmetijah, zmanj┼íevanje nezaposlenosti, pove─Źana samooskrba z energijo, pove─Źani javni dohodki v regiji. Med pomembnej┼íe in hkrati z aplikacijo merljive okoljske vplive sodijozmanj┼íevanje emisij CO2, zmanj┼íevanje stro┼íkov odlaganja odpadkov, vplivna rabo lesnih ostankov, prispevek h gospodarjenju z gozdovi ter vpliv narabo druge lesne biomase v regiji. Izra─Źun novih delovnih mest je razdeljen na neposredna, posredna in inducirana delovna mesta. Ra─Źunalni┼íka aplikacija je bila preizku┼íena v izbrani regiji v Sloveniji in na Hrva┼íkem.Wood biomass is an important renewable source of energy, which can have numerous positive socio-economical and environmental effects. In the present article we would like to present a new model for the estimation of 15 socioeconomic and environmental aspects of the increased use of wood biomass. The presented model enables a selected estimation of different aspects in different chains of biomass production, preparation and use, as well as an estimation of the following socio-economic and environmental aspects: net labour income, net profit, regional public finance receipts, net direct jobs, net indirect jobs, net induced jobs, total net jobs, contribution to forest management, impact on wood waste utilization, impact on other woody biomass utilization, avoided costs of land fuel, saving CO2 emissions, possible impacton regional unemployment, avoided costs of unemployment, additional jobsfor farmers, additional activities on farms (from indirect and induced jobs) and self-sufficiency in electricity production. The most important is the estimation of new jobs, which is the reason why they were divided into direct, indirect and induced now jobs. The model was tested in two selected region in Slovenia and in Croatia

    Roundwood and wood waste flow analysis for slovenia

    Get PDF
    Namen raziskave je preu─Źiti tokove in rabe okroglega lesa in lesnih ostankov vSloveniji za referen─Źno leto 2004. Izdelan je bil model, na podlagi katerega smo napravili dve bilanci okroglega lesa in bilanco lesnih ostankov v Sloveniji. Opravljen je bil pregled razpolo┼żljivih virov podatkov, ocenjena kakovost in podan predlog izbolj┼íav spremljanja. Rezultati raziskave ka┼żejo, da bilanca okroglega lesa v primeru uporabe uradnih podatkov o poseku izkazujeprimanjkljaj v vi┼íini 536.000 m3. Rezultati modelne bilance okroglegalesa izkazujejo pozitiven rezultat. V bilanci lesnih ostankov ostaja po namenu evidentirane rabe nerazvr┼í─Źenih 297.000 ton lesnih ostankov. Viri podatkov in njihova kakovost omogo─Źata pogojno uporabo in sta potrebna izbolj┼íav. Pregled nad tokovi in realnimi podatki o posameznih rabah lesa je pripomo─Źek pri strate┼íkih odlo─Źitvah na sektorskem, regionalnem in dr┼żavnem nivoju.The main objective of the study was to make a model that identifi es fl ows and use of roundwood and wood wastes in Slovenia in the basic year. A new conceptual model was created. On the basis of this model, two roundwood and one wood waste balance were prepared. A wide range of available data was takeninto consideration, the quality of data evaluated and a proposal for improving their quality prepared. The results of roundwood balance showed a defi cit of 536,000 m3, if offi cial data for annual removals were taken intoaccount. In the case of modelled (enlarged) removals, the roundwood balance is positive. The use of 297.000 t of wood wastes in wood wastes balance remains unknown. The gathered data have limited applicability and needto be improved. Wood fl ow and data analysis should play an important role as part of strategic planning and decision making at the sectoral, local,regional and national levels

    Assessment of Costs in Harvesting Systems Using WoodChainManager Web-based Tool

    Get PDF
    The rationalization of working procedures during difficult market conditions is gaining increasing importance. For rational production, it is necessary to always be aware of what and how much to invest in the business process to obtain the desired products or services without economic loss. This article presents a tool for the assessment of costs in forest wood supply chains. WoodChainManager is a Web-based tool composed of three user modules intended for the assessment of material costs of individual machines or the total costs of all selected machines in a forest harvesting system. Users can test the impact of individual technologies on the total material costs of the harvesting system and thus optimize operation processes. The basic tool for describing harvesting systems is the matrix, which visualizes cutting and hauling from the standing tree in the stand to the forest products at the end user. The tool has built-in algorithms that prevent the selection of an illogical harvesting system. The selected method for calculating costs for individual machines is simple, but still reflects the state of the actually incurred costs. WoodChainManager offers cost calculations for a wide range of technologies, machines and appurtenant attachments. The authors of this paper wish to increase awareness and understanding of cost calculations and to offer the possibility to directly compare different harvesting systems

    A System for Quality Assessment of Forestry Contractors

    Get PDF
    Skilled contractors are needed to meet the increased demand for wood and to maintain a competitive edge in forestry. The structure of the forest industry has changed significantly. TodayÔÇÖs situation favours smaller contractors that are more flexible. Worldwide contractors are important for forest operations, but there is often limited knowledge about how well they fulfil demands about resource efficiency, social responsibility and environmental protection. The aim of this paper is to present the guidelines for the assessment of forestry contractors following sustainability principles and to present a recently developed system. In addition to the requirements for professional competences and legislative obligations, the system proposes a number of additional requirements such as corporate social responsibility, participation in the local community and greater environmental responsibility. The forestry contractor and the certification body sign a cooperation agreement to obtain the expert assessment. The expert assessment is performed by an evaluator authorised by a certification body. A web service has been introduced with the purpose of serving as a communication tool between professional evaluators and forestry contractors, as well as providing a new possibility for forest owners to get direct contact with forestry contractors. The system enables its users to exert influence on the assessment of forestry contractors by assessing the quality of their services. Private forests would greatly benefit from customer feedback information on the service quality. By now, 1584 forest contractors have registered in Slovenia, where 67% provide the service of cutting and skidding, 8% provide woodchipper service, 7% transport of round wood, 5% cable crane yarding and 4% fully mechanised harvesting. Until June 2020, 142 forest contractors have gone through the process of quality assessment
    • ÔÇŽ
    corecore