Full text of this article is only available in PDF format.

Leo Heikurainen (email)

Metsäojituksen vaikutuksesta puuston kasvuun ja poistumaan hakkuusuunnitteiden laskemista varten

Heikurainen L. (1961). Metsäojituksen vaikutuksesta puuston kasvuun ja poistumaan hakkuusuunnitteiden laskemista varten. Acta Forestalia Fennica vol. 71 no. 8 article id 7117. https://doi.org/10.14214/aff.7117

English title: The influence of forest drainage on growth and removal in Finland. For estimations of allowable cut

Abstract

The Finnish forest industry is undergoing a vast expansion, which has raised questions of forest balance. This paper studies the possibilities to increase the amount available timber by means of forest drainage. About third of the Finnish land area is peatlands. The calculations of the investigation are based on Forestry Board districts. Based on earlier studies, there is estimated to be 3,042,000 ha of true drainable swamps, 973,000 ha of poor swamps, 1,381,000 ha of uplands in need of drainage, and 1,205,000 ha of drained peatlands. Therefore, the area of drainable and drained lands totals 6,6 million ha, and requirement of forest drainage 5,4 million ha. The drainage hardly reaches this extent, however. It can be assumed that part of the poor swamps is uneconomical to drain. In addition, a half of the paludified forest land will probably not be drained. Thus, it can be estimated that the area to be drained in the future is about 5 million ha. It seems possible that this area could be drained within about 50 years with the present draining capacity.

Draining of all objects of forests would increase the annual increment of our forests, in time, by about 10.5 million m3. This would signify an increase of 23% compared to the present growth of the forests. The increase in the growth consists mainly of softwood: 16% is birch, and the remaining 84% almost equally of Scots pine and Norway spruce. The increase of growth is relatively slow. Depending on the rate of the drainage program, the mean increase of growth will be reached in about 25–35 years. The increase in removal indicated by the increase in the mean increment will be reached in only 50–60 years.

The PDF includes a summary in English.

Original keywords
ojitus; metsäojitus; kasvu; turvekankaat; hakkuupoistuma; puuston kasvu; tuotto; poistuma

English keywords
yield; peatlands; draining of peatlands; increment; removal; annual increment

Published in 1961

Views 1259

Available at https://doi.org/10.14214/aff.7117 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Heikurainen L., Laine J. (1985) Duration of the height growth response of young .. Silva Fennica vol. 19 no. 2 article id 5237
Heikurainen L., (1985) The influence of birch nurse crop (Betula pubesc.. Silva Fennica vol. 19 no. 1 article id 5233
Heikurainen L., Laine J. et al. (1983) Fertilization and ditch spacing experiments conc.. Silva Fennica vol. 17 no. 4 article id 5198
Heikurainen L., (1982) Development of seedling stands on drained peatla.. Silva Fennica vol. 16 no. 3 article id 5163
Heikurainen L., Joensuu S. (1981) The hydrological effects of forest drainage Silva Fennica vol. 15 no. 3 article id 5124
Heikurainen L., (1973) The profitability limit in forest drainage. Silva Fennica vol. 7 no. 4 article id 4891
Heikurainen L., Ouni J. (1970) Height growth of seedling stands growing on peat.. Silva Fennica vol. 4 no. 2 article id 4817
Heikurainen L., Päivänen J. et al. (1966) Scots pine seeding and planting on drained peat .. Silva Fennica vol. no. 119 article id 4731
Heikurainen L., Keltikangas M. et al. (1963) Allocation of costs in joint forest drainage und.. Silva Fennica vol. no. 115 article id 4716
Heikinheimo L., Heikurainen L. et al. (1963) Effects of forest improvement on employment and .. Silva Fennica vol. no. 114 article id 4715
Heikurainen L., (1960) Swamp forestry research in Finland. Silva Fennica vol. 0 no. 108 article id 4696
Heikurainen L., (1957) Eutrophic pine bogs and their suitability for dr.. Silva Fennica vol. no. 93 article id 4672
Heikurainen L., (1951) Determination method for peatland vegetation Silva Fennica vol. no. 70 article id 4620
Heikurainen L., (1967) Influence of cuttings on the water economy of dr.. Acta Forestalia Fennica vol. 82 no. 2 article id 7175
Heikurainen L., Seppälä K. (1965) Regionality in stand increment and its dependenc.. Acta Forestalia Fennica vol. 78 no. 4 article id 7157
Heikurainen L., Päivänen J. et al. (1964) Ground water table and water content in peat soil Acta Forestalia Fennica vol. 77 no. 1 article id 7149
Heikurainen L., (1963) Use of ground water table fluctuations for measu.. Acta Forestalia Fennica vol. 76 no. 5 article id 7145
Heikurainen L., Seppälä K. (1963) The effect of drainage degree on temperature con.. Acta Forestalia Fennica vol. 76 no. 4 article id 7144
Heikurainen L., (1961) The influence of forest drainage on growth and r.. Acta Forestalia Fennica vol. 71 no. 8 article id 7117
Mikola P., Kangas E. et al. (1959) Silvicultural research in Finland from 1909 to 1.. Acta Forestalia Fennica vol. 70 no. 4 article id 7494
Mikola P., Kangas E. et al. (1959) Silvicultural research in Finland from 1901 to 1.. Acta Forestalia Fennica vol. 70 no. 3 article id 7493
Heikurainen L., (1959) Condition and growing stock of drained peatlands.. Acta Forestalia Fennica vol. 69 no. 1 article id 7489
Heikurainen L., (1958) Root systems of mixed forest in drained peatlands Acta Forestalia Fennica vol. 67 no. 2 article id 7476
Heikurainen L., (1957) Changes in depth and top width of forest ditches.. Acta Forestalia Fennica vol. 65 no. 5 article id 7468
Heikurainen L., (1955) Structure of Scots pine root systems in a pine s.. Acta Forestalia Fennica vol. 65 no. 3 article id 7466
Heikurainen L., (1955) On the seasonal changes of root system of a pine.. Acta Forestalia Fennica vol. 65 no. 2 article id 7465
Heikurainen L., (1954) Regeneration of Scots pine stands of pine swamps.. Acta Forestalia Fennica vol. 61 no. 27 article id 7439
Heikurainen L., Laine J. (1976) Effect of fertilization, drainage and temperatur.. Acta Forestalia Fennica vol. 0 no. 150 article id 7584
Heikurainen L., Seppälä K. (1973) Regional variation and continuity of stand growt.. Acta Forestalia Fennica vol. 0 no. 132 article id 7566
Heikurainen L., (1973) A method for calculation of the suitability of p.. Acta Forestalia Fennica vol. 0 no. 131 article id 7565
Heikurainen L., Veijola P. (1971) Effect of fertilization and ditch spacing on reg.. Acta Forestalia Fennica vol. 0 no. 114 article id 7548
Heikurainen L., (1971) Ground water table in drained peat soils and its.. Acta Forestalia Fennica vol. 0 no. 113 article id 7547
Heikurainen L., (1970) The effect of thinning, clear cutting, and ferti.. Acta Forestalia Fennica vol. 0 no. 104 article id 7538