This publication provides basic information on tree growth, characteristics that define wood quality, and the implications of common silvicultural (tree tending) activities on wood quality. It is at best a summary—tree growth is an immensely complex process, and not all aspects of wood formation are fully understood. Most of the...
The relationship between Leaf Area Index (LAI) and current stem-wood
production was examined in selected stands in eastern
Washington. Stands were sampled with an angle gauge (prism). LAI
was estimated from sapwood area; current stem-wood production from
DBH, height, and radial increment.
Maximum LAI attainable on a given site has...
The purpose of this study was to examine the geometry of enclosed
circles in order to predict the probable effects of increment
boring methods used in determining basal area growth. Of specific
concern was the comparison of areas derived from sets of borings
taken from opposite sides of the tree...
The effectiveness of sapwood basal area as an estimator of individual
tree basal area growth was tested on several young, even-aged
Douglas-fir stands, stocked at varying densities. For all densities,
ranging from partially open-grown to very overstocked stands, the
null hypothesis that there was no association between sapwood basal
area...
Stocking characteristics and heights attained by tree
seedlings at ages five and seven were measured on 45 study
units, representing five habitat types, established on
clearcuts in the Abies amabilis zone in the Western Cascades
of Oregon. The study units ranged from six to 30 acres in
size, seven to...
The control that stand leaf area exerts upon individual tree vigor was tested on a heterogeneous, even-aged Douglas-fir stand infected by Phellinus root rot. Tree vigor, or growth efficiency ratio, was defined as the current basal area growth per unit of leaf area. Because of a close relationship between sapwood...
Two physiological factors are of major importance to tree and stand growth: (1) the photosynthetic rate of foliage and (2) the amount of foliage. If carbohydrate allocation patterns remain constant, stand growth should be related directly to total canopy photosynthesis. From a literature analysis I assess methods of relating photosynthetic...
