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 ar ...
The resistance of a leaf to molecular gaseous diffusion
is an important physiological response. Control of
leaf resistance enables a plant to control its transpired
water loss and regulates photosynthesis.
Four study ...
The objective of this study was to examine the life history of
vine maple on the H. J. Andrews Experimental Forest. This study was
conducted as a part of an I. B. P. general study of understory biomass
and productivit ...
Samples of mature vegetation from 8 of 12 major vegetational zones in Oregon and Washington, representing about 80% of the area of the two states, were studied along a latitudinal transect from the Pacific Coast
to the ...
The comercial thinning of second-growth stands in the Pacific
Northwest is becoming increasingly important for satisfying the demand
for timber. Cable logging will require the rigging of smaller intermediate
support t ...
In order to appraise timber, it is necessary to estimate logging costs with reasonable accuracy. The purpose of this study is to provide a rethod for estimating log loading costs in the Intermountain Region. Nine differe ...
In northeast China, logging has three stages; timber
harvest, transportation and the operations inside a timber
yard. The timber yard is an intermediate transhipment point
between truck transport and rail transport to ...
The succession of plants over a period of 25 years was analyzed on clearcut areas in the western Cascades of Washington and Oregon. Thirty-three paired burned and unburned plots were reexamined in 1975. Data were combine ...
Regression equations applicable to biomass components of stands
of western hemlock [Tsuga heterophylla (Raf.) Sarg.} were developed
by destructive sampling of a thinned and an unthinned stand of
western hemlock near S ...
Field and greenhouse bioassays were used to compare the mycorrhizal associations of Douglas-fir seedlings from undisturbed forests, and nonburned and burned portions of clearcuts on three Sites in the west-central Cascad ...
This study focused on extensive soil mass movement occurrence
in the Willamette National Forest of western Oregon and on intensive
measurements of some physical and biological changes in
streams following debris torre ...
A program was developed on a desktop computer to determine the cable tensions and position of a balloon tethered by two or more guylines. The program was specifically applied to the analysis of the static load lifting ca ...
The objectives of this investigation were two-fold: (1) to examine possible seed and cone characteristics and their usefulness as seed maturity indices, and (2) to examine the effects of artificial ripening on seed matur ...
Present methods of determining proper glueline cure are inadequate
in either production or laboratory situations because they
are time consuming and "after the fact". Monitoring the glueline
while the wood composite i ...