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Kullervo Kuusela (email), Sakari Salminen

Suomen metsävarat 1977-1984 ja niiden kehittyminen 1952­-1980

Kuusela K., Salminen S. (1991). Suomen metsävarat 1977-1984 ja niiden kehittyminen 1952­-1980. Acta Forestalia Fennica no. 220 article id 7666. https://doi.org/10.14214/aff.7666

English title: Forest resources of Finland in 1977–1984 and their development in 1952–1980

Abstract

The field of work of the 7th National Forest Inventory was carried out during 1977–84. This report consists of the analysis of the forest resources, long-term development of forests and the results by ownership categories in Finland.

The area of forestry land, 26.4 million ha, has decreased slightly because of the increase of build-up areas and communication routes. Forest land, which is suitable to growing wood profitably, amounted 20.1 million ha. It has increased, although not as fast as earlier, due to drainage and fertilization of scrub and waste land swamps and the afforestation of agricultural land.

The growing stock volume was 1,660 million m3 and the estimated gross annual increment 68.4 million m3. A large quantity of young, rapidly growing stands, and fellings markedly below the increment, are the principal factors increasing the growing stock. The volume of Scots pine (Pinus sylvestris L.) has increased most but the greatest proportional increase has been in the volume of broadleaved trees.

The silvicultural quality of stands has improved and the increase in saw log tree volume has resulted in an increase in the total growing stock volume. The proportional volume of saw logs, however, has decreased. Both aging mature stands and postponed thinnings increase the risk of losses due to mortality and decay. Too dense stands retard the diameter growth of trees. The proportion of unsuccessful artificial regeneration has increased.

The area of private forests has slightly decreased, while companies and collective bodies have increased their ownership. Non-farmer private ownership already accounts for one half of the area of private forests. The silvicultural quality of company forests is best and the increase of the growing stock and its increment is proportionally greatest in these forests.

The PDF includes a summary in English.

Original keywords
metsävarat; Suomi; metsätase; metsänomistus; puutase; valtakunnan metsien inventointi

English keywords
forest ownership; National Forest Inventory; Finland; forest resources; forest balance

Published in 1991

Views 3635

Available at https://doi.org/10.14214/aff.7666 | Download PDF

Creative Commons License CC BY-SA 4.0

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