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Silva Fennica 1926-1997
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Articles containing the keyword 'cleaning'

Category : Article

article id 4675, category Article
Gustav Sirén. (1958). Kokemuksia raivaussahan käytöstä metsänhoitotöissä. Silva Fennica no. 93 article id 4675. https://doi.org/10.14214/sf.a9121
English title: Experiences of brush cutters in silviculture.
Original keywords: metsänhoito; koneellistuminen; raivaussahat; työvälineet; taimikonhoito; hakkuualan raivaus
English keywords: mechanization; cleaning of sapling stand; brush cutter; clearing saw; hand tools; clearing of cutting area
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article id 4502, category Article
V. K. Ahola. (1937). Havaintoja viimeaikaisista metsänhoitotöistä valtionmetsissä. Silva Fennica no. 39 article id 4502. https://doi.org/10.14214/sf.a13912
English title: Observations on forest management work in state forests.
Original keywords: metsänhoito; metsäopetus; kylvö; valtion metsät; metsätyö; metsänhoitajien jatkokurssit; istutus; kasvatushakkuu; taimikon perkaus; kulotus
English keywords: forest management; silviculture; planting; forest education; state forests; sowing; forest work; professional development courses; cleaning of sapling stand; broadcast burning
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Category : Research article

article id 10196, category Research article
Karri Uotila, Jari Miina, Timo Saksa, Ron Store, Kauko Kärkkäinen, Mika Härkönen. (2020). Low cost prediction of time consumption for pre-commercial thinning in Finland. Silva Fennica vol. 54 no. 1 article id 10196. https://doi.org/10.14214/sf.10196
Keywords: forest vegetation management; early cleaning; release treatment; linear mixed model; topographic wetness index; work productivity
Highlights: Time consumption (TC) in pre-commercial thinning (PCT) can be predicted by variables describing site and stands conditions and previous silvicultural management; Applying variables available in forest resources data the field-assessment of worksite difficulty factors is not needed; The TC model could facilitate the predictions of the labour costs of PCT in forest information systems.
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article id 1514, category Research article
Heidi Hallongren, Ville Kankaanhuhta, Mikael Kukkonen. (2016). Cleaning Scots pine seedling stands with mechanical uprooters – a work quality comparison of two related devices. Silva Fennica vol. 50 no. 3 article id 1514. https://doi.org/10.14214/sf.1514
Keywords: Pinus sylvestris; productivity; early cleaning; mechanized silviculture
Highlights: The productivity of the narrower modified device was significantly better than the wider original device; Work quality did not differ significantly between devices when stand characteristics, regeneration success and pre-existing damage were taken into account; Results indicate that mechanical uprooting devices may be further developed to a cost-effective alternative to motor-manual techniques for the early cleaning of direct seeded commercial Scots pine stands.
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article id 1302, category Research article
Nils Fahlvik, Per Magnus Ekö, Nils Petersson. (2015). Effects of precommercial thinning strategies on stand structure and growth in a mixed even-aged stand of Scots pine, Norway spruce and birch in southern Sweden. Silva Fennica vol. 49 no. 3 article id 1302. https://doi.org/10.14214/sf.1302
Keywords: yield; cleaning; heterogeneous forest; dimension distribution; growth simulator
Highlights: Precommercial thinning (PCT) was a useful tool to influence the stand structure in accordance to silvicultural goals; PCT had a great impact on tree species composition; The seemingly great potential to influence the structure of a heterogeneous, mixed stand was restrained by natural settings and unconditional considerations at PCT (e.g. tree vitality, stem quality, regular spacing).
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article id 982, category Research article
Karri Uotila, Timo Saksa, Juho Rantala, Nuutti Kiljunen. (2014). Labour consumption models applied to motor-manual pre-commercial thinning in Finland. Silva Fennica vol. 48 no. 2 article id 982. https://doi.org/10.14214/sf.982
Keywords: productivity; pre-commercial thinning; forest vegetation management; early cleaning; release treatment; mixed linear regression
Highlights: When a young stand grows and gets older, the work time needed to make pre-commercial thinning increases. The stands of Norway spruce (Picea abies (L.) Karst.), Scots pine (Pinus sylvestris L.) and hardwoods (Betula spp.) required an additional 8.2%, 5.2%, and 3.3% work-time per year, respectively.
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article id 919, category Research article
Karri Uotila, Juho Rantala, Timo Saksa. (2012). Estimating the need for early cleaning in Norway spruce plantations in Finland. Silva Fennica vol. 46 no. 5 article id 919. https://doi.org/10.14214/sf.919
Keywords: cleaning; conifer release; cost-effectiveness; forest vegetation management; early cleaning
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article id 146, category Research article
Karri Uotila, Juho Rantala, Timo Saksa, Pertti Harstela. (2010). Effect of soil preparation method on economic result of Norway spruce regeneration chain. Silva Fennica vol. 44 no. 3 article id 146. https://doi.org/10.14214/sf.146
Keywords: Picea abies; soil preparation; cleaning; disc trenching; forestry investment analysis; pre-commercial thinning; regeneration chain; spot mounding; sprouting
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article id 343, category Research article
Karin Vestlund, Tomas Nordfjell, Lars Eliasson, Anders Karlsson. (2006). A decision support system for selective cleaning. Silva Fennica vol. 40 no. 2 article id 343. https://doi.org/10.14214/sf.343
Keywords: forestry; pre-commercial thinning; automation; practical cleaning
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article id 363, category Research article
Karin Vestlund, Tomas Nordfjell, Lars Eliasson. (2005). Comparison of human and computer-based selective cleaning. Silva Fennica vol. 39 no. 4 article id 363. https://doi.org/10.14214/sf.363
Keywords: forestry; decision support; pre-commercial thinning; automation; practical cleaning; training-tool
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Category : Research note

article id 379, category Research note
Daniel Ligné, Lars Eliasson, Tomas Nordfjell. (2005). Time consumption and damage to the remaining stock in mechanised and motor manual pre-commercial thinning. Silva Fennica vol. 39 no. 3 article id 379. https://doi.org/10.14214/sf.379
Keywords: birch; Scots pine; cleaning; time study; brush saw; Husqvarna; Vimek
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