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Metsätieteen aikakauskirja Dissertationes Forestales Suo - Mires and Peat
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Full text of this article is only available in PDF format.

Kari Leinonen (email), Matti Leikola, Antti Peltonen, Pentti Räsä­nen

Kuusen luontainen uudistaminen Pirkka-­Hämeen metsälautakunnassa

Leinonen K., Leikola M., Peltonen A., Räsä­nen P. (1989). Kuusen luontainen uudistaminen Pirkka-­Hämeen metsälautakunnassa. Acta Forestalia Fennica no. 209 article id 7656. https://doi.org/10.14214/aff.7656

English title: Natural regeneration of Norway spruce in Pirkka-Häme Forestry Board District, Southern Finland

Abstract

The aim of the present study was to evaluate and develop the use of natural regeneration of Norway spruce (Picea abies (L.) H. Karst.) in private forestry. The study was carried out using a line-plot survey with permanent circular sample plots. In total 40 regeneration sites were measured. The study includes results from three successive inventories: prior to the shelterwood cutting, in the summer after the cutting, and one year after the cutting. Regression and logistic regression analyses were used to construct models describing the effect of various factors on the restocking of the stands.

The standing volume prior to the shelterwood cutting was on average 236 m3/ha (ranging from 80 to 428 m3/ha) and after the cutting 120 m3/ha (39–220 m3/ha). The average number of stems per hectare decreased from 435 to 186. Prior to the shelterwood cutting 22% of the stands were satisfactorily restocked. After the cutting and one year later these percentages were 6 and 29%, respectively. Prior to the shelterwood cutting the number of acceptable seedlings was 1,440/ha, in the summer and year later 1,308/ha and 1,546/ha, respectively. Prior to the shelterwood cutting the characteristics of the mother stands did not correlate well with the number of seedlings. The change in the number of seedlings during the initial stage of shelterwood method depended on height of the seedling stand, amount of logging waste and number of germlings prior to the cutting. The risk to fail in regeneration was highest in the poorly restocked, sparse shelterwood stands, where a fast expansion of grass vegetation took place.

The PDF includes a summary in English.

Original keywords
kuusi; luontainen uudistaminen; taimettuminen; suojuspuumenetelmä

English keywords
Picea abies; natural regeneration; shelterwood method; restocking

Published in 1989

Views 8221

Available at https://doi.org/10.14214/aff.7656 | Download PDF

Creative Commons License CC BY-SA 4.0
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