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Articles by Lars Björklund
Category : Research article
article id 662,
category
Research article
Lars Björklund.
(1999).
Identifying heartwood-rich stands or stems of Pinus sylvestris by using inventory data.
Silva Fennica
vol.
33
no.
2
article id 662.
https://doi.org/10.14214/sf.662
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Variations in heartwood percentage, heartwood radius and sapwood width, within and between stands of Scots pine (Pinus sylvestris L.), were analysed using a database of 198 CT-scanned (computer tomography) stems from 33 research plots (stands) throughout Sweden. Heartwood percentage varied greatly both between individual trees and between stands, and correlated poorly to site, stand and tree variables. This implies that it seems unfeasible to identify heartwood-rich stands or stems, e.g., for production of heartwood products, by using inventory data. Heartwood formation expressed as the number of new heartwood rings formed each year was found to increase with increasing cambial age, from about 0.5 rings per year at a cambial age of 45 years, to about 0.8 rings per year at a cambial age of 115 years.
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Björklund,
Swedish University of Agricultural Sciences, Department of Forest Management and Products, S-750 07 Uppsala, Sweden
E-mail:
lars.bjorklund@sh.slu.se
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