Growth, Structure and Shape Characteristics of a 12 Year Old Grey Alder Stand (Alnus incana L. Moench)

1989

S. 73-96

1 Abb., 3 Tab., 27 Lit. Ang.

Unselbständiges Werk

200068670

Silva Gandavensis 1989 ; (54), S. 73-96

In the experimental forest Aelmoeseneie at Gontrode (Belgium), a 12 year old artificial plantation of grey alder has been analysed on growth, structure and shape characteristics. In the plot some ten tree cells and tree pairs were examined in particular. The tree cells consisted of one central tree, which was surrounded by six other ones. The tree pairs were the dominant tree and the most dominated tree in these cells. In the first place height, diameter, basal area and leaf mass were determined. Then, the vertical and horizontal structures were analysed, with special attention being paid a well to the social differentiation in the tree cells as to the crown areas. Finally, several tree shape characteristics were determined. The alder grew very well. The internal competition and differentiation had already started. The position of the dominant trees, however, is not stabilised yet. The treatment of the thicket, in continuity with the thinning, will be necessary in the next future.