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Kullervo Kuusela (email)

Suurin kestävä hakkuusuunnite ja sen metsätaloudellinen merkitys

Kuusela K. (1959). Suurin kestävä hakkuusuunnite ja sen metsätaloudellinen merkitys. Acta Forestalia Fennica vol. 71 no. 1 article id 7110. https://doi.org/10.14214/aff.7110

English title: Largest permanent allowable cut and a method for its calculation

Abstract

The purpose of the investigation was to study the factors which determine the amount of the largest permanent allowable cut and to work out a method to estimate it. There is a need to have a ’short cut’ formula for rough preliminary estimates. The preliminary estimates will be checked by stock development forecasts. The largest allowable cut and its sustained basis are only guaranteed by a forecast through a period during which all the present tree stands have reached maturity and exploited.

Estimations of the largest permanent allowable cut are based on the data of the present and desirable growing stock. The present stock was a growing stock of Scots pine (Pinus sylvestris L.) dominated stands on Vaccinium type forests in Southern Finland. The connected Austrian formula is a simple way for preliminary estimation of the largest cut but its sustained basis must be checked by a stock development forecast.

In a stock development forecast the future increment and cut are calculated. For this purpose, the average site quality, tree species, age class and average volume in each class seem to be sufficient variables. The forecast is carried out within the limiting data of the present and desirable stock.

If there is an abundance of mature and over-mature stands, the largest permanent allowable cut is greater than the present increment, provided, however, that bulk of the cut is drawn by determined generation measures. Measured in solid cubic meters, the sustained cut from the Southern Finnish pine stock exceeds the present increment by 11%. With regard to the sustained saw timber production the cut can exceed the present increment by 5–7%.

The PDF includes a summary in English.

Original keywords
mänty; hakkuusuunnitelma; metsänarviointi; kasvu; hakkuusuunnite; suurin kestävä hakkuusuunnite; kasvuennuste

English keywords
Pinus sylvestris; Scots pine; allowable cut; forest mensuration; increment; largest allowable cut

Published in 1959

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Available at https://doi.org/10.14214/aff.7110 | Download PDF

Creative Commons License CC BY-SA 4.0

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