Post-drainage development of structural characteristics in peatland forest stands

Hökkä, Hannu; Laine, Jukka

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Silva Fennica vol. 22 no. 1 article id 5341 | 1988 | Article

Hannu Hökkä , Jukka Laine

Suopuustojen rakenteen kehitys ojituksen jälkeen.

Hökkä H., Laine J. (1988). Suopuustojen rakenteen kehitys ojituksen jälkeen. Silva Fennica vol. 22 no. 1 article id 5341. https://doi.org/10.14214/sf.a15498

English title: Post-drainage development of structural characteristics in peatland forest stands

Abstract

The effect of drainage on structure of tree stands is analysed by comparing the average structural characteristics (e.g. diameter distribution) of stands in the data for different drainage age classes and selected site types. The material consists of ca. 4,400 relascope sample plots, which are part of a large drainage area inventory project. The uneven-aged structure of the virgin peatland forest is preserved for several decades after drainage. This is enhanced by the post-drainage increase of small-diameter trees, especially birch. The number of trees per hectare increased during a period of ca. 30 years and levelled off thereafter. The increase in the number of saw log stems is clearly related to the fertility of the site and its geographical location.

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Original keywords
metsikön rakenne; turvemaat; ojitetut suot; eri-ikäisrakenne; runkoluku; läpimittajakauma

English keywords
stand structure; drained peatlands; diameter distribution; forest drainage; uneven-aged structure

Published in 1988

Available at https://doi.org/10.14214/sf.a15498 | Download PDF

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