61. Private forest owner's cooperation in the machinery ring : is it a solution for wood mobilization from small-scale private forests?Špela Pezdevšek Malovrh, Nike Krajnc, Matevž Triplat, 2022, original scientific article Abstract: Legislation and policy makers have recognized private forest owners cooperation in machinery ring as an instrument to support wood mobilization through efficient use of machinery. The study analyzes private forest owner’s cooperation in the machinery ring in Slovenia and determines whether this cooperation contributes to wood mobilization from small-scale private forests. The research was conducted in two phases. In the first phase, the survey was conducted among the members of machinery rings at their annual general meetings (24 machinery rings participated in the survey, representing 64.9% of the total number of machinery rings). The questionnaire was distributed to all members present at the annual general meetings (n=529) and only those who were private forest owner or provided services within machinery rings were eligible to complete the questionnaire (n=438). In the second phase, data on the amount of service provided by machinery ring members were compared with the amount of felling in private forests for 2019 to gain insight into the extend of forestry work (timber harvesting) carried out in a private forest under neighbourhood assistance.The results show that machinery rings members are predominantly male, on average 50 years old, mainly with high school education and occupation in agriculture, owning on average 15.2 ha of forest. Regardless of forest management activities, machinery ring members perform forest management activities in their forest by themselves or with the help of family members. Only a small proportion of members use neighbourhood assistance to carry out the work. This most often occurs in the transport of timber. A very small proportion of members provide forest services through the machinery ring, but their scope of services is not insignificant. In 2019, machinery ring members most often performed harvesting activities with the chain saw, followed by timber skidding as a service. Equipment with machinery for providing services is good among members – about three quarters of them have a chainsaw and an adapted agricultural tractor, but this machinery is quite old, showing that machinery is insufficiently used for forestry operations. The results show that machinery rings are nowadays an essential part of strategic (operational) management in Slovenian agriculture and forestry, and provide important insights into the possibilities to improve forestry operations and the future development cooperation between private forest owners in machinery rings to support wood mobilization from small-scale private forests.
Keywords: private forest management, harvesting intensity, cooperation, machinery cooperation, neighbourhood assistance
Published in DiRROS: 25.04.2022; Views: 553; Downloads: 404
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62. Effects of boom-corridor thinning on harvester productivity and residual stand structureDan Bergström, Raul Fernandez-Lacruz, Teresa de la Fuente, Christian Höök, Nike Krajnc, Jukka Malinen, Yrjö Nuutinen, Matevž Triplat, Tomas Nordfjell, 2022, original scientific article Abstract: Biomass derived from small-diameter, dense, thinning stands is largely underutilized within the European Union, mainly because of in-effective harvesting methods and cutting technology, leading to high supply costs. Therefore, the efficacy of boom-corridor thinning (BCT) and selective thinning (ST) on harvester felling and bunching productivity was compared for the first thinning of whole tree biomass in small-diameter, dense stands. BCT working method is when trees are cut with linear movements of the harvester’s boom reach, along narrow corridors, instead of cutting each tree selectively (ST). Trials were performed in six forest stands, one in Sweden, two in Finland, and three in Slovenia, using the same harvester and operator. A time-and-motion study was carried out in 64 pre-marked study units (32 replications per method), across a variety of stand conditions. The biomass removal for both treatments averaged 40.2 dry t ha -1 and BCT productivity averaged 5.4 dry t PMh -1. For BCT, harvester work time consumption (sec tree -1) and productivity (dry t PMh -1) were on average 27% lower and 16% higher, respectively, compared with ST. The effectiveness of the accumulating felling head technology used could potentially be increased by implementing a feed-roller system when handling excessive tree lengths. Developing dedicated harvesting technology for BCT could further boost productivity, facilitating cost-effective and sustainable utilization of low-value small-diameter tree biomass and replacing fossil resources.
Keywords: bioenergy, accumulating felling head, multi-tree handling, silviculture, bioeconomy, forestry
Published in DiRROS: 20.04.2022; Views: 539; Downloads: 384
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63. Strokovne podlage za avtomatizirano spremljanje gozdne proizvodnje v družbi SiDGMatevž Triplat, Urban Žitko, Matevž Mihelič, Mirko Baša, Nike Krajnc, 2020, treatise, preliminary study, study Keywords: gozdovi, gozdarstvo, avtomatizacija, gozdna proizvodnja, avtomatizirano spremljanje, digitalizacija, spravilo lesa, prevoz lesa, sečnja, strojna sečnja
Published in DiRROS: 08.04.2022; Views: 545; Downloads: 0 |
64. Recenzija začasnih normativov spravila lesa z zgibnimi traktorji z vitlom in prevoza lesa s tovornjakiBoštjan Košir, Matevž Triplat, Matevž Mihelič, Nike Krajnc, 2019, treatise, preliminary study, study Keywords: gozdovi, gozdarstvo, normativi, gozdna proizvodnja, gozdarska dela, spravilo lesa, prevoz lesa, zgibni traktorji, tovornjaki
Published in DiRROS: 08.04.2022; Views: 562; Downloads: 0 |
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66. Predlog kriterijev za izbor izvajalcev za okvirni sporazum : "Storitve sečnje in spravila lesa v gozdovih, ki so last Republike Slovenije" za obdobje od sklenitve sporazuma do 31.12.2019Nike Krajnc, Matevž Triplat, 2018, treatise, preliminary study, study Keywords: gozdovi, gozdarstvo, gozdna proizvodnja, izvajalci del v gozdovih, sečnja, spravilo lesa, državni gozdovi
Published in DiRROS: 08.04.2022; Views: 547; Downloads: 0 |
67. Predlog kriterijev za izbor izvajalcev za okvirni sporazum : "Gojitvena, varstvena dela in druga dela, ki so potrebna za zagotavljanje socialnih in ekoloških funkcij v gozdovih, ki so last Republike Slovenije" za obdobje od sklenitve sporazuma do 31.12.2020Nike Krajnc, Matevž Triplat, 2018, treatise, preliminary study, study Keywords: gozdovi, gozdarstvo, gozdna proizvodnja, izvajalci del v gozdovih, gojitvena dela, državni gozdovi
Published in DiRROS: 08.04.2022; Views: 538; Downloads: 0 |
68. Popis sekalnikov 2021Jaša Saražin, Tina Jemec, Darja Stare, Špela Ščap, Urban Žitko, Nike Krajnc, 2022, professional article Keywords: gozdarstvo, gozdovi, les, sekalniki, proizvodnja sekancev, gozdna tehnika
Published in DiRROS: 22.02.2022; Views: 790; Downloads: 382
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69. Popis sekalnikov 2021 : Gozdarski inštitut SlovenijeJaša Saražin, Tina Jemec, Darja Stare, Špela Ščap, Urban Žitko, Nike Krajnc, 2021, other monographs and other completed works Keywords: lesna biomasa, lesni sekanci, sekalniki, lesna goriva, Slovenija
Published in DiRROS: 28.01.2022; Views: 823; Downloads: 211
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70. Energetska storitev : energetsko pogodbeništvo : toplota namesto energentaNike Krajnc, Thomas Loibnegger, Peter Prislan, Marjan Dolenšek, Christian Metschina, 2014, professional monograph Keywords: energetika, učinkovita raba energije, varčevanje z energijo, lesna biomasa, ekonomika
Published in DiRROS: 05.01.2022; Views: 896; Downloads: 288
Full text (4,98 MB) |
