Groei en productie van Amerikaanse eik in Nederland

J.J. Jansen, A. Oosterbaan, G.M.J. Mohren, J. den Ouden

Research output: Book/ReportReportProfessional

Abstract

In the Netherlands growth and yield research on red oak was done from 1949 to 1988. This includes studies by Becking and by the Dorschkamp/IBN research institute. Together with the perma-nent sample plots from the timber prognosis system HOSP, all this comprises a dataset of 58 plots with 306 recordings. For the development of top height htop with age t, Jansen & Hildebrand’s poly-morphic model with site index h70 and three additional parameters fitted best.The diameter development up to stand height of 7 m was described with a linear function in htop and initial density (N0). From a stand height of 7 m and up, the basal area increment (iG) was described by Jansen’s et al. model based on a power function with htop, t, year of recording (yor), and the stand density index of Hart (S %). For S% > 19.1 the basal area increment drops strongly non-linear with in-creasing S%. The model contains a correction factor for yor, which was not significant. The effect of thinning on the diameter after thinning, was modelled with a modified La Bastide-Faber model. The model was used to construct yield tables for with five site classes and one thinning intensity
Original languageDutch
Place of PublicationWageningen
PublisherWageningen University & Research
Number of pages41
DOIs
Publication statusPublished - 2018

Publication series

NameFEM Groei en Productie rapport
No.2018-9

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