What is it about?
A method for quantifying thinning intensity in experimental trials in even aged stands is proposed. The method is based on Assmann’s theory and assesses thinning intensity in terms of percentage of basal area to be removed. The objective of this method is to identify a procedure that permits an objective comparison of different grades of thinning from below on the basis of dendrometric parameters such as dominant height and basal area.
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Why is it important?
Determining the intensity of forest thinning through the use of objective indices is important for setting up experimental comparisons between different thinning regimes and for translating the results of the experiments into operational guidelines for forest management. The method presented here is based on ASSMANN’S theory (1970), which defines variable density thresholds in relation to the maximum basal area of the stand. This is the basal area attained, at different ages, by stands that have never been thinned and where density is reduced mainly by natural mortality.
Perspectives
The method provides a parameter-based procedure for the experimental comparison of different thinning intensities, sheding objective light on possible differences in the stands’ reactions to different thinning intensities.
Piermaria Corona
CREA Research Centre for Forestry and Wood
Read the Original
This page is a summary of: A parameter-based method for determining thinning intensity, L’Italia forestale e montana, January 2009, Accademia Italiana di Scienze Forestali,
DOI: 10.4129/ifm.2009.6.03.
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