Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
1988
Forfattere
Mekjell MelandSammendrag
Det er ikke registrert sammendrag
Forfattere
Torbjørn OkstadSammendrag
Geometric properties, wood properties and quality were measured in a sample of pulpwood logs from Central Norway. The average middle diameters with bark of butt logs, middle logs and top logs were 17.2 cm, 16.6 cm and 10.6 cm respectively (Table 1). The frequency distribution of the diameters is given in Fig. 1. The average log length in this sample is 4.32 m (Table 2). The frequency distribution of the log length is illustrated in Fig. 2. Log taper was calculated to be 1.40 cm/m on the average (Table 3). Log taper increases with increasing diameter (Fig. 3). The ovality of the logs increases with increasing diameter (Fig. 4). The average basal area quotient is calculated to be 0.88 (Table 4). Double bark thicknesses of the butt logs, middle logs and top logs in this sample are 10.9 mm, 10.3 mm and 7.2 mm respectively (Table 5). Average bark volume percentages are 11.7%, 12.0% and 13.2% respectively. The corresponding figures measured according to special rules by the measurement society are 11.2%, 12.4% and 14.6% respectively (Table 6). The average log volume with bark of this sample is 75.3 dm3 (Table 7). The frequency distribution of the log volume is given in Fig. 7. The proportion of knotwood and compression wood of the total wood volume is on the average 2.0% and 5.8% respectively (Tables 8 and 9). The proportion of decayed wood is 3.3% (Table 10). The measurement society classified 86.6% of the total volume as first class quality, 6.6% as second class quality and 6.8% as cull (Table 11). The growth ring width in this sample was on the average 1.3 mm (Table 12). The basic density of the logs is given in Table 13 and was on the average 415.0 kg/m3. The relationship between basic density decreases with increasing growth ring width. The moisture content (per cent of green weight) at the time of delivery is highest in the winter and lowest in the late summer (Fig. 11).
Forfattere
Toril Drabløs EldhusetSammendrag
Det er ikke registrert sammendrag
Forfattere
Toril Drabløs EldhusetSammendrag
Det er ikke registrert sammendrag
Forfattere
Tor MykingSammendrag
Det er ikke registrert sammendrag
Forfattere
Mekjell MelandSammendrag
Det er ikke registrert sammendrag
1987
Forfattere
Ø. Austarå Fred MidtgaardSammendrag
Det er ikke registrert sammendrag
Forfattere
Toril Drabløs Eldhuset Anders Göransson T. IngestadSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Finn Roll-HansenSammendrag
Det er ikke registrert sammendrag