Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 536741
Title Groei en productie van es in Nederland
Author(s) Jansen, J.J.; Goudzwaard, L.; Oosterbaan, A.; Mohren, G.M.J.; Ouden, J. den
Source Wageningen : Wageningen University & Research (FEM Groei en Productie rapport 2018-11) - 43
Department(s) Forest Ecology and Forest Management
Alterra - Nature and society
PE&RC
Publication type Research report
Publication year 2018
Abstract In the Netherlands growth and yield research on ash was done from 1949 to 1988. This in-cludes studies by the Dorschkamp/IBN research institute and by Wageningen University. Together with the permanent sample plots from the timber prognosis system HOSP, all this comprises a da-taset of 41 plots with 150 recordings. For the development of top height htop with age t, Cieszewski’s polymorphic model with site index h50 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 tree distance. From a stand height of 7 m and up, the basal area increment (iG) was described by Jan-sen’s et al. model based on a power function with h50, htop, t, year of recording (yor), and the stand density of Hart (S %). For S% > 16.7 the basal area increment strongly decreases non-linearly with in-creasing %. The model contains a correction factor for yor, but this was not significant, nor was htop. The effect of thinning on the diameter after thinning was modelled with a modified La Bastide-Faber model. The models were used to construct yield tables for with five site classes and one thinning in-tensity.
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