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

Category : Article

article id 5466, category Article
Hely Häggman. (1991). Application of biotechnology to forest tree breeding. Silva Fennica vol. 25 no. 4 article id 5466. https://doi.org/10.14214/sf.a15624
Keywords: tree breeding; micropropagation; vegetative propagation; somatic embryogenesis; conventional breeding; somaclonal variation; biotechnology; gene transfer
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article id 5356, category Article
Pekka Lähdesmäki, Pekka Pietiläinen. (1988). Seasonal variation in the nitrogen metabolism of young Scots pine. Silva Fennica vol. 22 no. 3 article id 5356. https://doi.org/10.14214/sf.a15513
Keywords: Pinus sylvestris; winter dormancy; amino acids; arginine; proteins; nitrate reductase; γ-glutamyltransferase; pine buds and needles; nitrogen metabolism
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Category : Research article

article id 10695, category Research article
Ana de Lera Garrido, Terje Gobakken, Hans Ole Ørka, Erik Næsset, Ole M. Bollandsås. (2022). Estimating forest attributes in airborne laser scanning based inventory using calibrated predictions from external models. Silva Fennica vol. 56 no. 2 article id 10695. https://doi.org/10.14214/sf.10695
Keywords: forest inventory; LIDAR; calibration; area-based approach; spatial transferability; temporal transferability
Highlights: Three approaches to calibrate temporal and spatial external models using field observations from different numbers of local plots are presented; Calibration produced satisfactory results, reducing the mean difference between estimated and observed values in 89% of all trials; Using few calibration plots, ratio-calibration provided the lowest mean difference; Calibration using 20 plots gave comparable results to a local forest inventory.
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article id 10272, category Research article
Ana de Lera Garrido, Terje Gobakken, Hans Ole Ørka, Erik Næsset, Ole M. Bollandsås. (2020). Reuse of field data in ALS-assisted forest inventory. Silva Fennica vol. 54 no. 5 article id 10272. https://doi.org/10.14214/sf.10272
Keywords: airborne laser scanning; data reuse; temporal model transferability
Highlights: Six biophysical forest attributes were estimated for small stands without using up-to-date field data; The approaches included reused model relationships and forecasted field data; The accuracy of height estimates was comparable with the accuracy of an ordinary forest inventory with up-to-date field- and ALS data; Both approaches tended to produce estimates systematically different from the ground reference.
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article id 7731, category Research article
Anneli Viherä-Aarnio, Pirkko Velling. (2017). Growth, wood density and bark thickness of silver birch originating from the Baltic countries and Finland in two Finnish provenance trials. Silva Fennica vol. 51 no. 4 article id 7731. https://doi.org/10.14214/sf.7731
Keywords: Betula pendula; provenance; bark thickness; frost crack; seed transfer; wood basic density; wood discolouration
Highlights: Baltic origins of silver birch had significantly thicker bark than the Finnish ones; In terms of wood density, no consistent difference was detected between the Baltic and Finnish origins; Incidence of darkened core wood increased with increasing seed origin latitude; Frost cracks were most common in south Latvian origins grown in central Finland.
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article id 46, category Research article
Matti Rousi, Boy J.H.M. Possen, Risto Hagqvist, Barb R. Thomas. (2012). From the Arctic Circle to the Canadian prairies – a case study of silver birch acclimation capacity. Silva Fennica vol. 46 no. 3 article id 46. https://doi.org/10.14214/sf.46
Keywords: acclimation; Betula papyrifera; Betula pendula; birch adaptability; critical night length; provenance transfers
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article id 690, category Research article
Bengt Persson. (1998). Will climate change affect the optimal choice of Pinus sylvestris provenances? Silva Fennica vol. 32 no. 2 article id 690. https://doi.org/10.14214/sf.690
Keywords: Pinus sylvestris; yield; survival; temperature sum; climatic warming; provenance transfer
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Category : Research note

article id 10683, category Research note
Aarne Hovi, Petr Lukeš, Lucie Homolová, Jussi Juola, Miina Rautiainen. (2022). Small geographical variability observed in Norway spruce needle spectra across Europe. Silva Fennica vol. 56 no. 2 article id 10683. https://doi.org/10.14214/sf.10683
Keywords: albedo; remote sensing; reflectance; transmittance; land surface modeling; leaf optical properties; radiative transfer modeling
Highlights: Spectra of Norway spruce needles were collected from three sites in Europe (49°–62°N); The same acquisition and processing parameters were applied throughout the campaign; Geographical variability in the needle spectra was small; Comparison of the spectra of coniferous needles and broadleaved tree foliage is also presented.
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article id 10014, category Research note
Āris Jansons, Roberts Matisons, Virgilijus Baliuckas, Līga Purina, Oskars Krišāns, Jānis Jansons, Imants Baumanis. (2018). Performance variation of lodgepole pine provenances in Latvia. Silva Fennica vol. 52 no. 5 article id 10014. https://doi.org/10.14214/sf.10014
Keywords: provenance trial; Pinus contorta var. latifolia; growth traits; transfer; spike knots
Highlights: Performance of 36 provenances of lodgepole pine in 14 trials was studied; The 29 year survival was ca. 40%; Provenance and provenance × trial interaction affected dimensions of lodgepole pine; Provenances from lower latitudes were the most productive.
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