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Articles containing the keyword 'stems'

Category : Article

article id 5637, category Article
Janne Uuttera, Harri Hyppänen. (1997). Relationship between forest management planning units and spatial distribution of forest habitat components in Koli National Park. Silva Fennica vol. 31 no. 4 article id 5637. https://doi.org/10.14214/sf.a8539
Keywords: Finland; forest management planning; forest habitat distribution; Geographic Information Systems; kriging-interpolation; Koli National park
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article id 5634, category Article
Leena Finér, Mika Nieminen. (1997). Dry mass and the amounts of nutrients in understorey vegetation before and after fertilization on a drained pine bog. Silva Fennica vol. 31 no. 4 article id 5634. https://doi.org/10.14214/sf.a8536
Keywords: Pinus sylvestris; biomass; peatlands; ground vegetation; field layer; litter; root systems; bottom layer
Abstract | View details | Full text in PDF | Author Info
article id 5626, category Article
Winfried Kurth, Branislav Sloboda. (1997). Growth grammars simulating trees – an extension of L-systems incorporating local variables and sensitivity. Silva Fennica vol. 31 no. 3 article id 5626. https://doi.org/10.14214/sf.a8527
Keywords: tree growth; competition; allocation; morphology; tree architecture; L-systems; sensitivity; tree structure
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article id 5619, category Article
Pertti Harstela. (1997). Decision support systems in wood procurement. A review. Silva Fennica vol. 31 no. 2 article id 5619. https://doi.org/10.14214/sf.a8520
Keywords: decision making; decision support systems; planning; wood procurement
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article id 5590, category Article
Heikki Hänninen, Seppo Kellomäki, Ilkka Leinonen, Tapani Repo. (1996). Overwintering and productivity of Scots pine in a changing climate. Silva Fennica vol. 30 no. 2–3 article id 5590. https://doi.org/10.14214/sf.a9235
Keywords: Pinus sylvestris; climate change; ecosystems; frost damage; phenology; forest ecology; gap-type model; model accuracy; model realism; overvintering
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article id 5579, category Article
F.G. Hall, P.J. Sellers, D.L. Williams. (1996). Initial results from the boreal ecosystem-atmosphere experiment, BOREAS. Silva Fennica vol. 30 no. 2–3 article id 5579. https://doi.org/10.14214/sf.a9224
Keywords: climate change; Canada; evaporation; BOREAS; boreal ecosystems; carbon exchange
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article id 5526, category Article
Pertti. Hari, Pasi Aalto, Kaarle Hämeri, Markku. Kulmala, Tapani. Lahti, Sari. Luoma, Lauri Palva, Toivo Pohja, Erkki. Pulliainen, Erkki. Siivola, Timo Vesala. (1994). Air pollution in eastern Lapland : challenge for an environmental measurement station. Silva Fennica vol. 28 no. 1 article id 5526. https://doi.org/10.14214/sf.a9160
Keywords: photosynthesis; automation; carbon dioxide; ozone; measurement systems; aerosols; sulphur dioxid; weather
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article id 5512, category Article
Christian Messier, Pasi Puttonen. (1993). Coniferous and non-coniferous fine-root and rhizome production in Scots pine stands using the ingrowth bag method. Silva Fennica vol. 27 no. 3 article id 5512. https://doi.org/10.14214/sf.a15673
Keywords: Pinus sylvestris; ground vegetation; undergrowth; roots; root systems; fine-root production; ingrowth bag; rhizomes; underwood
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article id 5504, category Article
Heli Peltola, Seppo Kellomäki. (1993). A mechanistic model for calculating windthrow and stem breakage of Scots pines at stand age. Silva Fennica vol. 27 no. 2 article id 5504. https://doi.org/10.14214/sf.a15665
Keywords: Pinus sylvestris; wind; stems; breakage; windspeed; breaking stress; bending models
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article id 5497, category Article
Pertti Pulkkinen. (1993). Frost hardiness development and lignification of young Norway spruce seedlings of southern and northern Finnish origin. Silva Fennica vol. 27 no. 1 article id 5497. https://doi.org/10.14214/sf.a15658
Keywords: Picea abies; provenance; stems; seedlings; frost resistance; lignification
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article id 5479, category Article
Douglas K. Loh, Hannu Saarenmaa. (1992). Design of integrated forest resource information systems. Silva Fennica vol. 26 no. 2 article id 5479. https://doi.org/10.14214/sf.a15640
Keywords: forest management; databases; information systems; X Window System
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article id 5469, category Article
Risto Heikkilä, Kari Löyttyniemi. (1992). Growth response of young Scots pines to artificial shoot breaking simulating moose damage. Silva Fennica vol. 26 no. 1 article id 5469. https://doi.org/10.14214/sf.a15627
Keywords: Pinus sylvestris; height growth; timber quality; Alces alces; stems; diameter growth; breakage; moose damage
Abstract | View details | Full text in PDF | Author Info
article id 5468, category Article
Seppo Kellomäki, Heikki Hänninen, Taneli Kolström, Risto Lauhanen, Ulla Mattila, Brita Pajari, Hannu Väisänen. (1992). A simulation model for the succession of the boreal forest ecosystem. Silva Fennica vol. 26 no. 1 article id 5468. https://doi.org/10.14214/sf.a15626
Keywords: succession; gap dynamics; ecosystems; simulation models; forest ecology
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article id 5458, category Article
Jaroslaw Burczyk, Grzegorz Kosiński, Andrzej Lewandowski. (1991).  . Silva Fennica vol. 25 no. 4 article id 5458. https://doi.org/10.14214/sf.a15616
English title: Mating pattern and empty seed formation in relation to crown level of Larix decidua (Mill.) clones.
Keywords: seeds; crown; Larix decidua; mating systems; genetic load; grafting
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article id 5425, category Article
Hannu Saarenmaa. (1990). Frame- and rule-based knowledge representation in an expert system for integrated management of bark beetles. Silva Fennica vol. 24 no. 2 article id 5425. https://doi.org/10.14214/sf.a15579
Keywords: modeling; Scolytidae; expert systems; frame-based knowledge representation; integrated pest management
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article id 5412, category Article
Jari Parviainen. (1990). Metsäpuiden paakkutaimituotannon nykynäkymät. Silva Fennica vol. 24 no. 1 article id 5412. https://doi.org/10.14214/sf.a15564
English title: Future trends for containerized tree seedling production: A literature review.
Original keywords: metsänuudistaminen; juuristo; kustannukset; paakkutaimituotanto; taimilaatu; epämuodostumat
English keywords: regeneration; containerized seedlings; costs; spacing; quality; tree nurseries; root systems; deformations
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article id 5371, category Article
Riitta Laurila. (1989). Pieniläpimittaisen männyn kuituominaisuudet. Silva Fennica vol. 23 no. 1 article id 5371. https://doi.org/10.14214/sf.a15530
English title: Fibre properties in Pinus sylvestris pulpwood.
Original keywords: kuitupuu; pienpuu; mänty; trakeidit; puuaineen ominaisuudet; kuitujen pituus; soluseinän paksuus
English keywords: Pinus sylvestris; cell wall thickness; wood properties; pulpwood; small-sized stems; tracheid length; smallwood
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article id 5239, category Article
Jussi Kuusipalo. (1985). On the use of tree stand parameters in estimating light conditions below the canopy. Silva Fennica vol. 19 no. 2 article id 5239. https://doi.org/10.14214/sf.a15418
Keywords: Pinus sylvestris; basal area; Picea abies; canopy; tree species composition; light conditions; light climate; number of stems; canopy coverage
Abstract | View details | Full text in PDF | Author Info
article id 5111, category Article
Seppo Kellomäki. (1981). Effect of the within-stand light conditions on the share of stem, branch and needle growth in a twenty-year-old Scots pine stand. Silva Fennica vol. 15 no. 2 article id 5111. https://doi.org/10.14214/sf.a15052
Keywords: Pinus sylvestris; Scots pine; growth; stand density; branches; stems; light conditions
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article id 5025, category Article
Eero Paavilainen. (1979). MAB 2 -projekti Suomessa. Silva Fennica vol. 13 no. 2 article id 5025. https://doi.org/10.14214/sf.a14879
English title: MAB 2 project in Finland.
Original keywords: seminaarit; maankäyttö; metsäekosysteemit
English keywords: Finland; forest ecosystems; land uses; seminar; MAB
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article id 5023, category Article
Anu Pärnänen. (1979). Erilaisten maankäyttötapojen ja hoitotoimenpiteiden ekologiset vaikutukset metsiin. Silva Fennica vol. 13 no. 2 article id 5023. https://doi.org/10.14214/sf.a14877
English title: Ecological effects of different land uses and management practices on boreal landscapes – Man and the Biosphere Programme, seminar of Project 2.
Original keywords: ekosysteemit; metsäekologia; seminaarit; maankäyttö; MAB
English keywords: forest ecology; forest ecosystems; land uses; UNESCO; seminar
Abstract | View details | Full text in PDF | Author Info
article id 4943, category Article
Matti Leikola. (1976). Näkökohtia metsikköekologisten ympäristötekijöiden mittaamisesta. Silva Fennica vol. 10 no. 2 article id 4943. https://doi.org/10.14214/sf.a14789
English title: Measuring environmental factors in a forest ecosystem.
Original keywords: ekosysteemit; metsäekologia; ympäristötekijät
English keywords: ecosystems; environmental factors; forest research; forest ecosystems
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article id 4688, category Article
L. Heikurainen, Finnish Society of Forest Science. (1960). Symposio metsätyypeistä ja metsäekosysteemeistä Motrealissa elokuun 24. päivänä 1959. IX Kansainvälisen kasvitieteellisen kongressin yhteydessä. Silva Fennica no. 105 article id 4688. https://doi.org/10.14214/sf.a14129
English title: Symposium on forest types and forest ecosystems during the IX international botanical congress Montreal, August 24th 1959.
Original keywords: kasvillisuus; metsätyypit; bibliografiat; ekosysteemit; kasvupaikkaluokitus; kokoukset; metsäekologia
English keywords: vegetation; ecosystems; forest types; bibliographies; site classification; Symposiums
Abstract | View details | Full text in PDF | Author Info

Category : Article

article id 7264, category Article
P. Kokkonen. (1931). Studies on the root systems of cereals I: the Root form, their structure, function and position in root system. Acta Forestalia Fennica vol. 37 no. 2 article id 7264. https://doi.org/10.14214/aff.7264
Keywords: root systems; cereals; rye; function; oat; wheat; barley
Abstract | View details | Full text in PDF | Author Info

Category : Research article

article id 23018, category Research article
Anssi Ahtikoski, Kari Väätäinen, Perttu Anttila, Juha Laitila, Antti Mutanen, Jari Lindblad, Lauri Sikanen, Johanna Routa. (2024). The effects of the EU’s forest-related policies on harvesting costs in Finland. Silva Fennica vol. 58 no. 3 article id 23018. https://doi.org/10.14214/sf.23018
Keywords: forests; scenario approach; harvesting costs; directives and regulations; EU legislation; structural systems analysis
Highlights: The EU’s forest-related policies set direct and indirect limitations on the harvesting operations and operating environment; The effect on harvesting costs of Directives and Regulations depends on the magnitude of policy implementation; In a high-impact scenario, harvesting costs could increase by as much as 18% from the current level of costs.
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article id 23045, category Research article
Laura Pikkarainen, Harri Strandman, Eerik Vento, Aaron Petty, Olli-Pekka Tikkanen, Antti Kilpeläinen, Heli Peltola. (2024). Effects of forest conservation and management on timber, ecosystem carbon, dead wood and habitat suitability area in a boreal forest under climate change. Silva Fennica vol. 58 no. 2 article id 23045. https://doi.org/10.14214/sf.23045
Keywords: saproxylic species; simulation; carbon storage; forest fertilization; Fennoscandia; forest ecosystems services; improved regeneration material
Highlights: Increasing forest conservation areas increased all other ecosystem services except timber yield. Intensive forest management enhanced this increase; Increased conservation area decreased timber yield, but intensive forest management reduced this effect and even overcompensated it at the end of simulation period in the 10% conservation scenario with intensified forest management; Climate change increased all other ecosystem services, except carbon stocks.
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article id 1657, category Research article
Razvan Vasile Campu, Arcadie Ciubotaru. (2017). Time consumption and productivity in manual tree felling with a chainsaw – a case study of resinous stands from mountainous areas. Silva Fennica vol. 51 no. 2 article id 1657. https://doi.org/10.14214/sf.1657
Keywords: time study; Husqvarna; work time structure; harvesting systems; resinous temperate forest
Highlights: An important preoccupation in sustainable logging management is represented by the analysis of work time structure and productivity level in manual tree felling with a chainsaw; Sound knowledge of the factors which influence work time allows better planning of harvesting operations so that deadlines could be met and damage to forest ecosystems be minimized.
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article id 1689, category Research article
Juha Laitila, Eeva Lehtonen, Tapio Ranta, Perttu Anttila, Saija Rasi, Antti Asikainen. (2016). Procurement costs of cereal straw and forest chips for biorefining in South-East Finland. Silva Fennica vol. 50 no. 5 article id 1689. https://doi.org/10.14214/sf.1689
Keywords: supply chains; stumps; young stands; logging residues; delimbed stems; agrobiomass
Highlights: Procurement cost at the plant was 59 € dry tonne –1 when the annual procurement volume of biomass was 100 000 tonnes. Of that amount, the proportion of logging residues was 58.4%, stumps 24.3% and delimbed stems 17.3%; Cereal straw represents an important source of biomass in Kouvola but the cost competiveness is poor compared the procurement costs of forest chips due to high baling and transporting costs.
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article id 1280, category Research article
Juha Laitila, Tapio Ranta, Antti Asikainen, Eero Jäppinen, Olli-Jussi Korpinen. (2015). The cost competitiveness of conifer stumps in the procurement of forest chips for fuel in Southern and Northern Finland. Silva Fennica vol. 49 no. 2 article id 1280. https://doi.org/10.14214/sf.1280
Keywords: stumps; quality; delimbed stems; pre-grinding; procurement; heating value
Highlights: Pre-grinding and integrated screening is a way of guaranteeing fuel quality, but, when the stumps’ ash content is six per cent or below, the procurement costs are higher than with grinding of stumps at the plant. Because of high transportation costs, stump harvesting is the most profitable in Southern Finland, where there is greater availability of stumps than in Northern Finland.
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article id 1047, category Research article
Kalle Karttunen, Lauri Lättilä, Olli-Jussi Korpinen, Tapio Ranta. (2013). Cost-efficiency of intermodal container supply chain for forest chips. Silva Fennica vol. 47 no. 4 article id 1047. https://doi.org/10.14214/sf.1047
Keywords: trucks; railways; wood fuels; transportation systems
Highlights: The combined availability and simulation study method obtains more realistic results for use in practical decision-making in supply chain management; The total costs of forest chips with intermodal composite container supply chains were lower than traditional options in all scenarios; The most advantageous way to expand the procurement area for forest chips is either to use composite container trucks or start using train transportation instead of trucks for procurement from longer distances.
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article id 88, category Research article
Seppo Rouvinen, Jari Kouki. (2011). Tree regeneration in artificial canopy gaps established for restoring natural structural variability in a Scots pine stand. Silva Fennica vol. 45 no. 5 article id 88. https://doi.org/10.14214/sf.88
Keywords: ecosystems; diversity; restoration
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article id 491, category Research article
Lars Rytter, Lars-Göran Stener. (2003). Clonal variation in nutrient content in woody biomass of hybrid aspen (Populus tremula L. x P. tremuloides Michx.). Silva Fennica vol. 37 no. 3 article id 491. https://doi.org/10.14214/sf.491
Keywords: growth; branches; genetic correlations; heritability; nutrient concentration; nutrient removal; stems
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article id 510, category Research article
Helge Dzierzon, Risto Sievänen, Winfried Kurth, Jari Perttunen, Branislav Sloboda. (2003). Enhanced possibilities for analyzing tree structure as provided by an interface between different modelling systems. Silva Fennica vol. 37 no. 1 article id 510. https://doi.org/10.14214/sf.510
Keywords: tree growth; mathematical models; simulation systems; forest growth; analysis tools
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Category : Review article

article id 9984, category Review article
Christoph Kogler, Peter Rauch. (2018). Discrete event simulation of multimodal and unimodal transportation in the wood supply chain: a literature review. Silva Fennica vol. 52 no. 4 article id 9984. https://doi.org/10.14214/sf.9984
Keywords: logistics; supply chain management; forest products industry; decision support systems; validation and verification of simulation models; resilient risk management
Highlights: Focus on discrete event simulation, wood supply chain and multimodal transport; Analyses of 12 review articles and a core of 32 research papers, complemented by 48 related ones; Research focus from unimodal to multimodal transport to build efficient, resilient, green and socially sustainable supply chains; Development of robust risk management considering supply risks, demand risks and external risks is needed.
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Category : Research note

article id 7771, category Research note
Māra Kitenberga, Roberts Matisons, Āris Jansons, Jānis Donis. (2018). Teleconnection between the Atlantic sea surface temperature and forest fires in Latvia and Estonia. Silva Fennica vol. 52 no. 1 article id 7771. https://doi.org/10.14214/sf.7771
Keywords: disturbance regime; Atmospheric circulation; weather systems; fire meteorology
Highlights: Forest fire activity in Latvia and Estonia was related to conditions in the Atlantic; Teleconnections differed regionally; Negative correlation between number of fires in Estonia and SST in the North Atlantic was detected; Area of forest fires in Estonia and activity of fires in Latvia were positively correlated with SST in the Baltic, North and Mediterranean Seas in summer.
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article id 897, category Research note
Lars Lundqvist, Susanne Spreer, Christer Karlsson. (2013). Volume production in different silvicultural systems for 85 years in a mixed Picea abies–Pinus sylvestris forest in central Sweden. Silva Fennica vol. 47 no. 1 article id 897. https://doi.org/10.14214/sf.897
Keywords: plantation; growth and yield; clear-cutting; silvicultural systems; seed trees; selection system; single-tree selection; diameter limit harvest
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article id 61, category Research note
Janine Schweier, Gero Becker. (2012). Harvesting of short rotation coppice – harvesting trials with a cut and storage system in Germany. Silva Fennica vol. 46 no. 2 article id 61. https://doi.org/10.14214/sf.61
Keywords: productivity; harvest operations; marginal sites; SRC; Stemster MK III
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Category : Discussion article

article id 24053, category Discussion article
Francisco X. Aguilar, Marie Lautrup, Dohun Kim, Ane C. Tangen, Aapo Rautiainen, Huntley Brownell, Lucas N. López, Andrew D. H. Stratton, Sebastian Glasenapp, Silvia M. Korth, Hanne K. Sjølie, Jette Bredahl Jacobsen. (2024). Inherently spatial: data and analytical insights for the identification of forest socio-ecological hotspots. Silva Fennica vol. 58 no. 5 article id 24053. https://doi.org/10.14214/sf.24053
Keywords: forest sector; spatial analyses; adaptive interventions; ecological-social systems; robustness; spatial data
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article id 270, category Discussion article
Seppo Rouvinen, Jari Kouki. (2008). The natural northern European boreal forests: unifying the concepts, terminologies, and their application. Silva Fennica vol. 42 no. 1 article id 270. https://doi.org/10.14214/sf.270
Keywords: human influence; biodiversity; natural ecosystems; natural forests; protection; terminology
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