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Articles containing the keyword 'Larix sibirica'

Category : Article

article id 5249, category Article
Jari Parviainen. (1985). Istuttamalla perustetun nuoren männikön, kuusikon, siperianlehtikuusikon ja rauduskoivikon kasvu. Silva Fennica vol. 19 no. 4 article id 5249. https://doi.org/10.14214/sf.a15428
English title: Growth of young Scots pine, Norway spruce, siberian larch and silver birch plantations.
Original keywords: kuusi; istutus; taimikko; läpimitan kasvu; tilavuuskasvu; pituuskasvu; rauduskoivu; siperianlehtikuusi; kasvunopeus
English keywords: Betula pendula; Picea abies; height growth; planting; diameter growth; volume growth; seedling stands; Larix sibirica
Abstract | View details | Full text in PDF | Author Info

Early growth of four different tree species (Pinus sylvestris L., Picea abies (L.) H. Karst., Larix sibirica Ledeb and Betula pendula Roth) 16–23 years after planting were compared in a field experiment of 16 square plots established on a stony, grove-like upland (Oxalis-Myrtillus forest type) in Southern Finland. This study gives additional results to the publication Folia Forestalia 386/1979.

At this early stage, the growth of the spruce stand was clearly slower than that of the other species for all parameters to be measured (height, diameter, and volume growth). Height growth was most rapid in the silver birch stand and diameter growth in the larch stand. No clear differences were found in the mean volume of the 100 thickest trees in the stand between the larch and silver birch.

The PDF includes a summary in English.

  • Parviainen, E-mail: jp@mm.unknown (email)
article id 5188, category Article
Eljas Pohtila, Tapani Pohjola. (1983). Vuosina 1970-1972 Lappiin perustetun aurattujen alueiden viljelykokeen tulokset. Silva Fennica vol. 17 no. 3 article id 5188. https://doi.org/10.14214/sf.a15171
English title: Results from the reforestation experiment on ploughed sites established in Finnish Lapland during 1970–1972.
Original keywords: kuusi; kylvö; mänty; istutus; maanmuokkaus; Lappi; uudistaminen; kuolleisuus; rauduskoivu; siperianlehtikuusi; auraus
English keywords: Pinus sylvestris; Norway spruce; Betula pendula; Picea abies; regeneration; soil preparation; Scots pine; silver birch; planting; ploughing; Lapland; mortality; Siberian larch; sowing; Larix sibirica
Abstract | View details | Full text in PDF | Author Info

The objective of the study was to compare different reforestation methods on ploughed areas in Finnish Lapland. Four species were compared: Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies (L.) H. Karst.), silver birch (Betula pendula Roth) and Siberian larch (Larix sibirica Ledeb.). The experiments were established in different parts of Lapland on different types of sites in 1970–72.

In Scots pine there was a difference of 15 percentage points in survival of seedlings between the best and worst methods of regeneration. Containerized seedlings and paper pot seedlings had the best survival rates. In Norway spruce the respective difference between sowing and planting was about 20 percentage points. In favour of planting. The survival rate can be increased by about 20 percentage points by selecting the right tree species. The average height varied from 25 cm (the sowed Norway spruce) to 179 cm (the planted silver birch) after 10 growing seasons. The birch was planted at the most fertile sites only. The longer time passed from the afforestation the clearer was the effect of the local growing conditions on the development of the seedlings. The elevation of the site was one factor seemed to influence the success of the seedlings.

The PDF includes a summary in English.

  • Pohtila, E-mail: ep@mm.unknown (email)
  • Pohjola, E-mail: tp@mm.unknown
article id 5021, category Article
Antti Koskimäki, Pertti Hari, Markku Kanninen, Seppo Kellomäki. (1979). Inherent growth rythm of some Larix-species grown in a plastic greenhouse. Silva Fennica vol. 13 no. 1 article id 5021. https://doi.org/10.14214/sf.a14875
Keywords: nursery; height growth; larch; seedlings; Larix decidua; Larix sibirica; Larix laricina; greenhouse cultivation; Larix leptolepsis; growth rythm
Abstract | View details | Full text in PDF | Author Info

The daily height growth rate of several larch species and progenies (Larix decidua, Larix sibirica, Larix laricina, Larix leptolepis) grown in a plastic greenhouse and in the open was measured. The growth pattern indoors was completely different compared with the normal outdoor growth pattern. The onset of growth took place in the greenhouse much earlier than outdoors and the phase of increasing growth was much shorter, as was expected. However, the phase of maximum growth was unexpectedly long. This fact suggests that there is great potential for using greenhouse cultivation to change the growth pattern of cultivated plants in order to obtain more complete utilization of the potential growing season.

The PDF includes a summary in Finnish.

  • Koskimäki, E-mail: ak@mm.unknown (email)
  • Hari, E-mail: ph@mm.unknown
  • Kanninen, E-mail: mk@mm.unknown
  • Kellomäki, E-mail: sk@mm.unknown
article id 4989, category Article
Matti Kärkkäinen. (1978). Havaintoja iän vaikutuksesta lehtikuusen puuaineen tiheyteen. Silva Fennica vol. 12 no. 1 article id 4989. https://doi.org/10.14214/sf.a14843
English title: Observations on the effect of age on the basic density of larch wood.
Original keywords: tiheys; euroopanlehtikuusi; hake; lehtikuusi; siperianlehtikuusi
English keywords: larch; basic density; Larix decidua; Larix sibirica
Abstract | View details | Full text in PDF | Author Info

About 100 years old larch (Larix sibirica Lebed. And L. decidua Mill.) trees were felled and the basic density samples taken from the stump level were determined. The number of trees was 21 and number of samples 378. The maximum basic density was reached at the age of 40–60 years, as counted from the pith. The basic density decreased as the width of the growth rings increased or the amount of heartwood decreased. The average basic density of the whole disc was 543 kg/m3 in L. sibirica and 497 kg/m3 in L. decidua. The basic densities of bark were 328 kg/m3 and 286 kg/m3, respectively. 

The PDF includes a summary in English. 

  • Kärkkäinen, E-mail: mk@mm.unknown (email)
article id 4704, category Article
V. A. Kolehmainen. (1961). Lehtikuusenviljelys Tuomarniemellä. Silva Fennica no. 108 article id 4704. https://doi.org/10.14214/sf.a9139
English title: Cultivation of larch in Tuomarniemi, Finland.
Original keywords: viljely; Suomi; lehtikuuset; ulkomaiset puulajit; Tuomarniemi
English keywords: larch; Larix; Finland; cultivation; Larix decidua; foreign tree species; Larix sibirica; Larix gmelinii; Larix americana; Larix laricina
Abstract | View details | Full text in PDF | Author Info

Foreign tree species have been planted in Finland since 1900s, the most famous being Larix sibirica plantations in Raivola in Karelia, which now belongs to Soviet Union. One of the largest larch plantations of Finland today is situated in Tuomarniemi, in Central Finland. Ten larch stands were established in Tuomarniemi between 1912 and 1937 mainly by planting. The stand established in 1937 was sown. The trees represent five larch species: Larix sibirica Ledeb. (5 stands), Larix gmelinii var. kurilensis (2 stands, current name probably Larix gmelinii var. gmelinii), Larix americana Michx. (1 stand, now Larix laricina), Larix decidua Mill. (1 stand) and Larix occidentalis Nutt. (1 stand). The total area of the larch stands is 82.5 ha. This paper reports the studies made in the plantations in 1958.

In Tuomarniemi larch grows well in many types of soil from Vaccinium type sites to fresh mineral soil sites. The age of the stands varies from 19 to 48, height from 12 to 24 metres and annual growth from 5 to 12 m3/ha. Larix sibirca has the best stem form of the species, followed by L. gmelinii var. kuriliensis. Easiest to split is the straight-grained L. gmelinii var. kuriliensis. L. sibirica is almost as easy to process. The wood of L. decidua, on the other hand, is often spiral-grained and tough. The trees are seldom infected with decay fungi.

The PDF includes a summary in German.

  • Kolehmainen, E-mail: vk@mm.unknown (email)

Category : Article

article id 7361, category Article
M. Lappi-Seppälä. (1942). Siperian lehtikuusen kasvusta sekametsiköissä Evon valtionpuistossa. Acta Forestalia Fennica vol. 50 no. 8 article id 7361. https://doi.org/10.14214/aff.7361
English title: Growth of Siberian larch in mixed stands in state forests of Evo in Finland.
Original keywords: kuusi; tiheys; mänty; sekametsä; siperianlehtikuusi
English keywords: Pinus sylvestris; Norway spruce; Picea abies; Scots pine; growth; mixed forests; Siberian larch; Larix sibirica
Abstract | View details | Full text in PDF | Author Info

Of the foreign tree species Siberian larch (Larix sibirica Ledeb.) has the biggest economical potential in Finland. In its natural distribution the species grows mostly in mixed stands in other areas than the core of its range in Siberia, where it grows also in pure stands. However, growth studies have given contradictory results about how Siberian larch can manage competition of different tree species in mixed stands. In this study two-year old Siberian larch seedlings were planted in areas previously sown with Norway spruce (Picea abies (L.) Karst.) and Scots pine (Pinus sylvestris L.). The growth of the trees was measured when the stands were 50 years old.

It appears that the stands, about 3700 larch seedlings per hectare, have originally been too been too dense. In the two thinnings done in the area, larch has probably been favoured, which has resulted in varying mix of pine and spruce. In the 50-year old stands, Siberian larch has developed faster than Scots pine and Norway spruce. Contrary to some previous studies, the results show that Siberian larch can be grown also in mixed stands, but the growth will probably be slower than in pure stands. Best growth is achieved in pure stands that have been planted thinly enough.

The PDF includes a summary in German.

  • Lappi-Seppälä, E-mail: ml@mm.unknown (email)

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