Abstract
Stand-level predictions of basal-areadiameter distributions, height, positions of lowestdead and live branches and stem-rot are provided forgrey alder in eastern Finland. The usability of modelswas tested by calculating the accuracy of predictedvolume characteristics. The data were collected from 33stands situated in the provinces of North Karelia andNorth Savo in eastern Finland. These stands wereregenerated naturally, but some have been managed. Oneto three angle-count sample plots were placedsystematically in each stand using a 1 m2 ha−1 basal-area factor. The models can beapplied in two settings: tree diameters are eithermeasured or not. The prediction of branch heightcharacteristics, especially height to the lowest deadbranch, proved problematic due to weak correlationsbetween these characteristics and other treedimensions. Compared to previous studies it was foundthat stem-rot was higher in grey alder than in sprucebut lower than in white birch.
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Kärki, T., Maltamo, M. & Eerikäinen, K. Diameter distribution, stem volume and stem quality models for grey alder (Alnus incana) in eastern Finland. New Forests 20, 65–86 (2000). https://doi.org/10.1023/A:1006793616781
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DOI: https://doi.org/10.1023/A:1006793616781