Novel extracting methods for conifer stumps

References

• Ala-Ilomäki J, Högnäs T, Lamminen S, Sirén M. 2011. Equipping a conventional wheeled forwarder for peatland operations. Int J For Eng. 22(1):7–13.
   Google Scholar
• Anerud E, Jirjis R. 2011. Fuel quality of Norway spruce stumps – influence of harvesting technique and storage method. Scand J For Res. 26(3):257–266.
   Web of Science ®Google Scholar
• Anerud E, Jirjis R, Gebresenbet G. 2013. Cleaning of harvested Norway spruce stumps using a vibration-based method. Int J For Eng. 24(2):121–128.
   Google Scholar
• Anerud E, von Hofsten H, Eliasson L. 2016. An alternative supply system for stump biomass – coarse grinding combined with sieving of the produced hog fuel. Int J For Eng. 27(2):109–114.
   Web of Science ®Google Scholar
• Anon. 2010. Forest product conversion factors for the UNECE region. Geneva timber and forest discussion paper 49. ECE/TIM/DP/49. p. 50.
   Google Scholar
• Asikainen A, Lindblad J, Verkasalo E. 2009. Timber measurement. In: Kellomäki S, editor. Papermaking science and technology. Book 2. Forest resources and sustainable management. p. 572. Helsinki: Finnish Paper Engineers' Association
   Google Scholar
• Athanassiadis D, Lindroos O, Nordfjell T. 2011. Pine and spruce stump harvesting productivity and cost using a Pallari KH 160 stump lifting tool. Scand J For Res. 26(5):437–445.
   Web of Science ®Google Scholar
• Berg S. 2014. Technology and systems for ground harvesting with low ground disturbance [Doctoral thesis]. Swedish University of Agricultural Sciences. Acta Universitatis agriculturae Sueciae 2014:95. p. 83.
   Google Scholar
• Berg S, Bergström D, Nordfjell T. 2015. Effect of stump size and timing of stump harvesting on ground disturbance and root breakage diameter. Silva Fenn. 49(5):17. article id: 1312.
   Web of Science ®Google Scholar
• Bergroth J, Palander T, Kärhä K. 2006. Excavator-based harvesters in wood cutting operations in Finland. For Stud/Metsanduslikud Uurimused. 45:74–88.
   Google Scholar
• Björheden R. 2006. Drivers behind the development of forest energy in Sweden. Biomass Bioenergy. 30(4):289–295.
   Web of Science ®Google Scholar
• Eliasson L, Wästerlund I. 2007. Effects of slash reinforcement of strip roads on rutting and soil compaction on a moist fine-grained soil. For Ecol Manage. 252(1–3):118–123.
   Web of Science ®Google Scholar
• Eriksson A, Eliasson L, Hansson P-A, Jirjis R. 2014a. Effects of supply chain strategy on stump fuel cost: a simulation approach. Int J For Res. 11. Article ID 984395.
   Google Scholar
• Eriksson A, Eliasson L, Jirjis R. 2014b. Simulation-based evaluation of supply chains for stump fuel. Int J For Eng. 25(1):23–36.
   Google Scholar
• Finnish Statistical Yearbook of Forestry. 2014. Official statistics of Finland. p. 426. (In Finnish). [accessed May 2018] http://www.metla.fi/julkaisut/metsatilastollinenvsk/.
   Google Scholar
• Hakkila P. 1975. Kanto- ja juuripuunkuoriprosentti, puuaineen tiheys ja asetoniuutteitten määrä. [Bark percentage, basic density and amount of acetone extractives in stump and root wood]. Folia Forestalia. 224:14. (In Finnish, with English summary).
   Google Scholar
• Hakkila P. 1976. Kantopuu metsäteollisuuden raaka-aineena [Stumpwood as industrial raw material]. Folia Forestalia. 292:39. (In Finnish with English summary).
   Google Scholar
• Hakkila P. 2004. Developing technology for large-scale production of forest chips. Wood energy technology programme 1999–2003. Technology Programme Report 6/2004. National Technology Agency. p. 98.
   Google Scholar
• Hakkila P. 2006. Factors driving the development of forest energy in Finland. Biomass Bioenergy. 30(4):281–288.
   Web of Science ®Google Scholar
• Harstela P. 1991. Work studies in forestry. University of Joensuu. Silva Carelica. 18:41.
   Google Scholar
• Helmisaari H S, Kaarakka L, Olsson BA. 2014. Increased utilization of different tree parts for energy purposes in the Nordic countries. Scand J For Res. 29(4):312–322.
   Web of Science ®Google Scholar
• Kaarakka L, Vaittinen J, Marjanen M, Hellsten S, Kukkola M, Saarsalmi A, Palviainen M, Helmisaari HS. 2018. Stump harvesting in Picea abies stands: soil surface disturbance and biomass distribution of the harvested stumps and roots. For Ecol Manage. 425:27–37.
   Web of Science ®Google Scholar
• Kalliokoski T, Nygren P, Sievänen R. 2008. Coarse root architecture of three boreal tree species growing in mixed stands. Silva Fenn. 42(2):189–210.
   Web of Science ®Google Scholar
• Kärhä K. 2012. Comparison of two stump-lifting heads in final felling Norway spruce stand. Silva Fenn. 46(4):625–640.
   Web of Science ®Google Scholar
• Kärhä K, Elo J, Lahtinen P, Räsänen T, Keskinen S, Saijonmaa P, Heiskanen H, Strandström M, Pajuoja H. 2010. Kiinteiden puupolttoaineiden saatavuus ja käyttö Suomessa 2020 [Availability and the use of solid wood fuels in Finland in 2020]. Työ- ja elinkeinoministeriön julkaisuja. Energia ja ilmasto. 66/2010. p. 68. (In Finnish with English summary).
   Google Scholar
• Kärhä K, Peltola J. 2004. Metsäkoneiden monikäyttöisyys. [Versatility of the forest machinery]. Metsätehon raportti. 181:23. (In Finnish).
   Google Scholar
• Kärkkäinen L. 2005. Evaluation of performance of tree-level biomass models for forestry modeling and analyses. Finnish Forest Research Institute. Research Papers 940. p. 123.
   Google Scholar
• Laitila J. 2010. Kantojen korjuun tuottavuus [Productivity of stump harvesting]. Working Papers of the Finnish Forest Research Institute 150. p. 29. (In Finnish).
   Google Scholar
• Laitila J, Lehtonen E, Ranta T, Anttila P, Rasi S, Asikainen A. 2016. Procurement costs of cereal straw and forest chips for biorefining in South-East Finland. Silva Fenn. 50(5):21. article id 1689.
   Web of Science ®Google Scholar
• Laitila J, Nuutinen Y. 2015. Efficiency of integrated grinding and screening of stump wood for fuel at roadside landing with a low-speed double-shaft grinder and a star screen. Croat J For Eng. 36(1):19–32.
   Web of Science ®Google Scholar
• Laitila J, Ranta T, Asikainen A. 2008. Productivity of stump harvesting for fuel. Int J For Eng. 19(2):37–46.
   Google Scholar
• Laitila J, Ranta T, Asikainen A, Jäppinen E, Korpinen O-J. 2015. The cost competitiveness of conifer stumps in the procurement of forest chips for fuel in Southern and Northern Finland. Silva Fenn. 49(2):23. article id 1280.
   Web of Science ®Google Scholar
• Laitila J, Väätäinen K, Asikainen A. 2013. Comparison of two harvesting methods for complete tree removal on tree stands on drained peatlands. Suo – Mire Peat. 64(2–3):77–95.
   Google Scholar
• Latva-Mäenpää H. 2017. Bioactive and protective polyphenolics from roots and stumps of conifer trees (Norway spruce and Scots pine) [Academic Dissertation]. Chemistry Faculty of Science University of Helsinki Finland. p. 74.
   Google Scholar
• Latva-Mäenpää H, Laakso T, Sarjala T, Wähälä K, Saranpää P. 2014. Root neck of Norway spruce as a source of bioactive lignans and stilbenes. Holzforschung. 68(1):1–7.
   Web of Science ®Google Scholar
• Laurila J, Lauhanen R. 2010. Moisture content of Norway spruce stump wood at clear cutting areas and roadside storage sites. Silva Fenn. 44(3):427–434.
   Web of Science ®Google Scholar
• Lazdins A, Von Hofsten H, Dagnija L, Lazdans V. 2009. Productivity and costs of stump harvesting for bioenergy production in Latvian conditions. Engineering for Rural Development Symposium; May 28–29 2009; Jelgava, Latvia. p. 194–201.
   Google Scholar
• Lindroos O, Henningsson M, Athanassiadis D, Nordfjell T. 2010. Forces required to vertically uproot tree stumps. Silva Fenn. 44(4):681–694.
   Web of Science ®Google Scholar
• Lundström T, Jonas T, Stöckli V, Ammann W. 2007. Anchorage of mature conifers: resistive turning moment, root-soil plate geometry and root growth orientation. Tree Physiol. 27:1217–1227.
   PubMed Web of Science ®Google Scholar
• Marklund L G. 1988. Biomassafunktioner för tall, gran och björk i Sverige. [Biomass functions for pine, spruce and birch in Sweden]. Sveriges Lantbruksuniversitet. Report 45. p. 73. (In Swedish with English summary).
   Google Scholar
• Nylinder M. 1977. Upptagning av stubb- och rotved [Harvesting of stump and root wood]. Skogsarbeten Redogörelse 5/77. p. 19. (In Swedish).
   Google Scholar
• Official Statistics of Finland. 2018. Wood in energy generation 2017. Natural Resources Institute Finland (Luke).  [accessed May 2018]. http://stat.luke.fi/en/wood-energy-generation.
   Google Scholar
• Olsson B A, Hannrup B, Jönsson M, Larsolle A, Nordström M, Mörtberg U, Rudolphi J, Strömgren M. 2017. A decision support model for individual tree stump harvesting options based on criteria for economic return and environmental protection. Scand J For Res. 32(3):246–259.
   Web of Science ®Google Scholar
• Palander T, Kärhä K, Mehtätalo L. 2017. Applying polynomial regression modeling to productivity analysis of sustainable stump harvesting. Scand J For Res. 32(3):204–212.
   Web of Science ®Google Scholar
• Palander T, Smolander J, Kärhä K. 2015. Work system study of three stump-lifting devices in Finland. Scand J For Res. 30(6):558–567.
   Web of Science ®Google Scholar
• Palander T, Vesa L, Tokola T, Pihlaja P, Ovaskainen H. 2009. Modeling the stump biomass of stands for energy production using a harvester data management system. Biosyst Eng. 102:69–74.
   Web of Science ®Google Scholar
• Peltola H, Kellomäki S, Hassinen A, Granander M. 2000. Mechanical stability of Scots pine, Norway spruce and birch: an analysis of tree pulling experiments in Finland. For Ecol Manage. 135:143–153.
   Web of Science ®Google Scholar
• Persson T. 2017. Stump harvesting for bioenergy – methods and environmental effects. Scand J For Res. 32(3):201–203.
   Web of Science ®Google Scholar
• Petersson H, Ståhl G. 2006. Functions for below-ground biomass of Pinus sylvestris, Picea abies, Betula pendula and Betula pubescens in Sweden. Scand J For Res. 21(7):84–93.
   Web of Science ®Google Scholar
• Repola J, Ojansuu R, Kukkola M. 2007. Biomass functions for Scots pine, Norway spruce and birch in Finland. Working Papers No 53. Finnish Forest Research Institute. p. 27.
   Google Scholar
• Routa J, Brännström H, Anttila P, Mäkinen M, Jänis J, Asikainen A. 2017. Wood extractives of Finnish pine, spruce and birch – availability and optimal sources of compounds: A literature review. Natural resources and bioeconomy studies 73/2017. Natural Resources Institute Finland. p. 55.
   Google Scholar
• Samset I. 1992. Forest operations as a scientific discipline. Commun Skogforsk. 44(12):1–48.
   Google Scholar
• Sirén M, Ala-Ilomäki J, Mäkinen H, Lamminen S, Mikkola T. 2013. Harvesting damage caused by thinning of Norway spruce in unfrozen soil. Int J For Eng. 24(1):60–75.
   Google Scholar
• Spinelli R, Nati C, Magagnotti N. 2005. Harvesting and transport of root biomass from fast growing poplar plantations. Silva Fenn. 39(4):539–548.
   Web of Science ®Google Scholar
• Toivio J, Helmisaari H-S, Palviainen M, Lindeman H, Ala-Ilomäki J, Sirén M, Uusitalo J. 2017. Impacts of timber forwarding on physical properties of forest soils in southern Finland. For Ecol Manage. 406:22–30.
   Web of Science ®Google Scholar
• Tolosana E, Laina R, Martínez-Ferrari R, Ambrosio Y. 2011. Recovering of forest biomass from Spanish hybrid poplar plantations. Biomass Bioenergy. 35(7):2570–2580.
   Web of Science ®Google Scholar
• Uusitalo J, Ala-Ilomäki J. 2013. The significance of above-ground biomass, moisture content and mechanical properties of peat layer on the bearing capacity of ditched pine bogs. Silva Fenn. 47(3):1–18.
   Web of Science ®Google Scholar
• Uusitalo J, Salomäki M, Ala-Ilomäki J. 2015. Variation of the factors affecting soil bearing capacity of ditched pine bogs in Southern Finland. Scand J For Res. 30:429–439.
   Google Scholar
• Väätäinen K, Sikanen L, Asikainen A. 2004. Feasibility of excavator-based harvester in thinning of peatland forests. Int J For Eng. 15(2):103–111.
   Google Scholar
• Venäläinen P, Alanne H, Ovaskainen H, Poikela A, Strandström M. 2017. Kausivaihtelun kustannukset ja vähentämiskeinot puun toimitusketjussa [The annual extra costs due to seasonal variation in timber procurement, and means of reducing it]. Metsätehon tuloskalvosarja 8/2017. p. 76. (In Finnish).
   Google Scholar
• Vesa L, Palander T. 2010. Modeling stump biomass of stands using harvester measurements for adaptive energy wood procurement systems. Energy. 35:3717–3721.
   Web of Science ®Google Scholar
• von Hofsten H 2010. Skörd av stubbar – nuläge och utvecklingsbehov [Stump harvesting – state of art and development prospects]. Arbetsrapport från Skogforsk 703. p. 18. (In Swedish).
   Google Scholar
• von Hofsten H, Norden B 2007. Stubbfräsen – en ny och annorlunda teknik för att ta tillvara stubbar [Rotary stump cutter – a new technique for harvesting stumps]. Resultat från Skogforsk 18. p. 4. (In Swedish with English summary).
   Google Scholar
• Walmsley J D, Godbold DL. 2010. Stump harvesting for bioenergy – a review of the environmental impacts. Forestry. 83:17–38.
   Web of Science ®Google Scholar