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Articles containing the keyword 'lumituhot'

Category : Article

article id 5088, category Article
Reijo Solantie, Kari Ahti. (1980). Säätekijöiden vaikutus Etelä-Suomen lumituhoihin v. 1959. Silva Fennica vol. 14 no. 4 article id 5088. https://doi.org/10.14214/sf.a15029
English title: The influence of weather on the snow damages for forests in Southern Finland in 1959.
Original keywords: Etelä-Suomi; lumituhot; sääolosuhteet; sääilmiöt; huurre
English keywords: snow damage; rime; weather conditions; Southern Finland; orographic precipitation
Abstract | View details | Full text in PDF | Author Info

Snow and rime, attached to branches of conifers, seriously damaged forests in a region of 11,000 km2 in Southern Finland during a passage of two nearly occluded cyclones in 1959. The roles of different weather elements were studied by considering the variations occurring in them over this region and its surroundings. Damage occurred only inside an accentuated pattern of copious orographic precipitation. Precipitation only became attached to and retained on branches in such parts of the area where temperature varied on both sides of freezing point but did not exceed 0.6°C. Furthermore, damage only occurred in forests where rime formed (above a certain level and on sloping towards the prevailing wind).

The PDF includes a summary in English.

  • Solantie, E-mail: rs@mm.unknown (email)
  • Ahti, E-mail: ka@mm.unknown
article id 4707, category Article
Oiva Suominen. (1963). Metsiköiden alttius lumituhoon. Tutkimus Etelä-Suomessa talvella 1958-59 sattuneesta lumituhosta. Silva Fennica no. 112 article id 4707. https://doi.org/10.14214/sf.a14234
English title: Susceptibility of stands to devastation by snow. Investigation into snow devastation in Southern Finland in winter 1958-59.
Original keywords: lumituhot; mesätuhot; etelärannikko
English keywords: Finland; snow damage; forest damages; stem breakages
Abstract | View details | Full text in PDF | Author Info

Exceptionally widespread snow damages occurred in January 1959 in the southern coastal region of Finland. An inquiry showed that significant devastation had occurred over an area of 42,620 ha. The purpose of the present investigation was to study the susceptibility to snow damages of different stands in different locations. Only the stem breakage was recorded. 924 stands along 92 one-kilometre lines were studied in the western continuation of Salpausselkä ridge in the summer 1960. A supplementary study was carried out in 1961 in separate stands.

Most heavily damaged stands were found in a damage zone closest (31–40 km) to the coast of Gulf of Finland. The damages were 39% fewer in the zone 61–70 km from the coast. No stands over 140 m above sea level escaped damage. Stands on the edge of an open area such as a field, lake etc. fared better than areas within the forest. Eastern slopes were more susceptible for snow damages in these weather conditions. Also, conifers were more frequently damaged than deciduous trees. Dense stands, and stands aged 61–100 years had most damages.

The PDF includes a summary in English.

  • Suominen, E-mail: os@mm.unknown (email)

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