Skip to main content

Influence of Thinning and Tree Diameter Class on the Development of Basic Density and Annual Ring Width in Picea abies

Buy Article:

$60.90 plus tax (Refund Policy)


Stands included in seven thinning trials with Norway spruce (Picea abies (L.) Karst.) originally planted on highly productive sites in southern Sweden were investigated for the influence of different thinning regimes on basic density and ring width. Light thinnings from below did not have any direct effect on these properties. However, heavy thinnings that removed a total of 40% of the basal area considerably enhanced diameter development without a loss in volume production or a reduction in the uniformity of the wood. Thinning from above resulted in higher basic density and lower ring width compared with thinning from below. This was found to be an effect of selection because basic density increased with decreasing tree diameter. Diameter class had no effect on response to thinning as indicated by the fact that the smaller trees also responded strongly when thinned from above. Since no difference in basic density level between thinning regimes was found, it was concluded that differences in basic density were due to differences in annual ring width.

Document Type: Research Article


Publication date: May 10, 1999

More about this publication?

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more