Current issue: 58(5)
Acta Forestalia Fennica vol. 38 | 1933
Category : Article
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Laitakari,
E-mail:
el@mm.unknown
The article is a review on the costs of raw materials in the Finnish sawmill industry in 1920s based on statistics collected from the members of the Central Association of the Finnish Woodworking Industries (now Finnish Forest Industries). The article includes statistics about the average size of if the saw timber bought in standing sales from private forests and harvested from the industry’s own forests, stumpage price of the timber, and labour costs of the harvesting of the wood. The average size of the logs was greater in the northern part of Finland, where the sawmills could limit the purchases of smaller timber. In the southern part of the country, the size of the timber decreased in 1922‒1926 due to growing demand of the timber. The long transport distances in the north influenced the costs. The number of logs per tree increased during the period. The level of stumpage price varied considerably in different parts of the country, falling from the south-west to the east and north. Competition of raw material increased the stumpage prices in 1922a and 1926‒27. The international economic downturn influenced the industry in 1929‒1931.
The PDF includes a summary in German.
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Saari,
E-mail:
es@mm.unknown
A mirror dendrometer consists of a hollow metal tube and three mirrors that are installed in the tube in a certain way. The tool is used to determine the diameter of a tree trunk above the reach. The article presents the formulas that can be used to correct the measuring mistakes that are caused by the wrong position of the dendrometer.
To determine the form class of a stand with the diameter measurements from a certain height the Jonson’s diameter relations tables can be used. The calculation of the form class for a stand is presented.
The PDF contains a summary in Finnish.
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Heikkilä,
E-mail:
th@mm.unknown
A questionnaire was sent to the steamship owners to investigate the annual fuelwood consumption of the steamships in Finland in 1927‒1929. Most of the steamships used split spillet as fuel, and the share of coal and waste wood remained low. The fuelwood consumption of cargo ships, passenger ships and tugboats was calculated for different kinds of steamships, and by the engine power of the ships and by the fuelwood type. The annual fuelwood consumption of cargo ships was 22,768‒27,390 m3, passenger ships 24,738‒33,616 m3 and tugboats 76,764‒113,791 m3 in 1927‒1929.
The PDF includes a summary in German.
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Pöntynen,
E-mail:
vp@mm.unknown
The export of roundwood from Finland was studied based on the official statistics of foreign trade. The volumes were converted to solid volumes under bark. Roundwood (logs and masts) or raw timber trade consisted mainly of saw logs. The main tree species was Scots pine (Pinus sylvestrs L.) and Norway spruce (Picea abies (L.) H. Karst.). The annual volumes varied from 29,200 m3 in the war year 1918 to 657,200 m3 in 1924. Before the World War I the roundwood was exported mainly to Sweden and Russia, after the war the trade to Russia ceased. Also split spillet was a significant export item before the war. The export peaked in 1916 to 3 million m3, but decreased after the war to 30,000‒40,000 m3. The most important export item in the group of hewn timber has been Egyptian rafters, with annual export of 15,000‒284,600 m3 with the exception of the time of war. The export of spars exported to other countries than Egypt was highest before the war with 125,000 m3. The export of sleepers varied strongly, peaking in 1922. The total export of roundwood varied from 131,000 m3 in 1918 to 4.3 million m3 in 1927. Roundwood has mainly been exported to the European countries. Before the war, the main trading partners were United Kingdom and Russia. After the war the share of United Kingdom was nearly half of the volume, and Russia was replaced with Sweden.
The PDF includes a summary in German.
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Pöntynen,
E-mail:
vp@mm.unknown
