Current issue: 58(5)

Under compilation: 59(1)

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Silva Fennica 1926-1997
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Articles by Samuli Launiainen

Category : Research article

article id 24041, category Research article
Johanna Jetsonen, Annamari Laurén, Heli Peltola, Katariina Laurén, Samuli Launiainen, Marjo Palviainen. (2025). Volume growth responses of Scots pine and Norway spruce to nitrogen fertilization: quantitative synthesis of fertilization experiments in Finland. Silva Fennica vol. 59 no. 1 article id 24041. https://doi.org/10.14214/sf.24041
Keywords: precipitation; growth response; mineral soils; site fertility
Highlights: Volume growth responses increased linearly with the applied nitrogen (N) dose up to 200 kg N ha–1; Precipitation, site fertility, and time since fertilization affected the growth responses; Volume growth response to nitrogen fertilization was larger for Scots pine than for Norway spruce; Results can support planning of environmentally responsible and economically viable precision fertilization.
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article id 10494, category Research article
Hannu Hökkä, Ari Laurén, Leena Stenberg, Samuli Launiainen, Kersti Leppä, Mika Nieminen. (2021). Defining guidelines for ditch depth in drained Scots pine dominated peatland forests. Silva Fennica vol. 55 no. 3 article id 10494. https://doi.org/10.14214/sf.10494
Keywords: Pinus sylvestris; forest management; peatland; drainage; ditch network maintenance; process model; water table
Highlights: Process-based hydrological model was applied to drained peatland forests representing a wide range of conditions in Finland; Ditch depth keeping the median July–August water table below 0.35 m was defined; Ditch depth depended on climatic conditions, stand volume, peat properties, and ditch spacing; Shallower ditches than recommended in practice proved to be sufficient in most situations.
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