Báo cáo lâm nghiệp: "Modeling lumber recovery in relation to selected tree characteristics in jack pine using sawing simulator Optitek" ppsx
Báo cáo lâm nghiệp: "Modeling lumber recovery in relation to selected tree characteristics in jack pine using sawing simulator Optitek" ppsx
... INRA, EDP Sciences, 2005
DOI: 10.1051/forest:2005013
Original article
Modeling lumber recovery in relation to selected tree characteristics
in jack pine using sawing simulator Optitek
Shu-Yin ... adequate in estimating jack pine lum-
ber volume recovery from the stud mill using DBH only.
4.2. Lumber recovery in relation to DBH and tree height...
Báo cáo lâm nghiệp: "Variations of construction cost associated to leaf area renewal in saplings of two co-occurring temperate tree species (Acer platanoides L. and Fraxinus excelsior L.) along a light gradient" doc
... (1998) 1–11.
[27] Niinemets Ü., Kull O., Biomass investment in leaf lamina versus
lamina support in relation to growth irradiance and leaf size in tem-
perate deciduous trees, Tree Physiol. 19 (1999) ... of tree saplings, but among
species, there is a large inter-specific variability in the degree
of tolerance to shade. The ability of trees to acclimate to shade
is impor...
Báo cáo lâm nghiệp: "Relative efficiency of alternative methods to evaluate wood stiffness in the frame of hybrid larch (Larix × eurolepis Henry) clonal selection" potx
... due to the fact that sampling
steps such as felling, transportation, sawing and conditioning
are avoided. This spared money could then be used to increase
the intensity of selection to obtain ... clones was
selected in a clonal test established in Virton (Walloon Region,
Southern Belgium) in 1982.
Thirty-two trees consisting of 2 ramets
3
per clone were selected
from the do...
Báo cáo lâm nghiệp: "Sapwood hydraulic recovery following thinning in lodgepole pine" docx
... following
thinning can reduce demand for water resulting in increased
water availability in the rooting zone [24]. McDowell et al.
(in review) have also shown that decadal thinning to main-
tain ... might increase following thinning [15]
because of increased illumination of crowns stimulating stom-
atal opening [21] and greater wind loading [35] increasing
atmospheric moisture demand....
Báo cáo lâm nghiệp: "Production potential and ecological stability of mixed forest stands in uplands – VI. A beech/larch stand on a mesotrophic site of the Křtiny Training Forest Enterprise" pot
... 8).
Growing stock
e growing stock development (m
3
/ha) compiled
again according to the particular species in five-year
intervals is given in Table 9. e total growing stock in-
creased from initial ... Mill. living trees dead trees living trees dead trees living trees dead trees living trees dead trees living trees dead trees living trees dead trees
Traditional parameters
number...
Báo cáo lâm nghiệp: "Results of a phenological study of the tree layer of a mixed stand in the region of the Drahanská vrchovina Upland" ppt
...
monitoring of the tree layer in a mixed stand in
the region of the Drahanská vrchovina Upland in
2004–2007. e onset and duration of particular
phenological stages are described in monitored ... according to a thresh-
old value T5°C and T0°C was used. e long-term
monitoring of phenology and photosynthetic proc-
esses of trees in the region shows that physiological
process...
Báo cáo lâm nghiệp: "Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed" pps
... dealing with draining
waterlogged forest catchments and growing stands
in relation to runoff, assessed total runoff and its
extremes in the progress of time. Unlike them we
dealt with dividing ... order to restore discharge conditions in the wa-
tershed. In 1996, drainage ditches were dug to meet
the following requirements in the core area of the
watershed of approximatel...
Báo cáo lâm nghiệp: "Cambioxylophagous fauna of young spruce stands damaged by snow in the Beskids" potx
... occurred and in consequence, salvage fell-
ing wood was processed amounting to 3 million m
3
(spruce 74.5%, pine 23.3%) in stands aged over
40 years in the Czech Republic. In stands up to
40 years, ... related to changes
induced by damage but also to the microclimate of
a lying break in the stand. Breaks with the crown
dry differently from a standing tree. Intensity...
Báo cáo lâm nghiệp: " Comparison of deposition fluxes on the open area and in mountain spruce stands of different density" pdf
... collectors
was reduced to 5 during winter. Bulk atmospheric
precipitation was sampled with one collector in
the nearby open area. Samples were taken once a
month in the winter season and in ... 14-day intervals
in the other seasons. Samples were transferred to
the laboratory and prepared for the analyses usu-
ally the next day after the sampling. In winter it was
sometimes...
Báo cáo lâm nghiệp: "Horizontal structure of forest stands on permanent research plots in the Krkonoše Mts. and its development" ppsx
...
tree layer recruits. According to Hopkins-Skellam
and Clark-Evans indices the combined regenera-
tion on this PRP shows a moderately regular pat-
tern whereas according to Pielou-Mountford index ... distribution of the tree
layer individuals was random according to two
structural indices (Hopkins-Skellam and Pielou-
Mountford) and regular according to Clark-Evans
index. Ripley...
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