Báo cáo lâm nghiệp: "Predispositions and symptoms of Agrilus borer attack in declining oak trees" docx
Báo cáo lâm nghiệp: "Predispositions and symptoms of Agrilus borer attack in declining oak trees" docx
... galleries in
infected branches of wilting bur oaks, presumably made by A.
bilineatus, but did not investigate the trunks. A. bilineatus
appears to start its attacks in the crown of declining oaks and
then ... thicker-barked declining oaks. The bark of tree XII was
the thinnest of all 12 trees studied and, in spite of a considerable
leaf loss, this oak showed no eviden...
Báo cáo lâm nghiệp: "Quantity and distribution of fine root biomass in the intermediate stage of beech virgin forest Badínsky prales" potx
... with the dominant function of water
and minerals supply. e ratio between the fine root
length and the number of root tips is an indicator of
the intensity of the fine root forking.
A direct ... depth
and it has almost a linear character in the mineral
soil. e comparison of the amounts of explained
variance (r
2
) and the parameters of the linear and
nonlinear (e...
Báo cáo lâm nghiệp: "Structure and development of forest stands on permanent research plots in the Krkonoše Mts" pdf
... stands) and spruce stands, relict pine
woods and stands in the ecotone of the upper forest
limit in diff erent site, stand, air-pollution and eco-
logical conditions were examined. e main ...
of higher ratio of silver fi r in the forest stand. e
complex diversity of the stand was in the fi rst year
of measurement very high, but shows slight de-
crease during follow...
Báo cáo lâm nghiệp: "Survival and growth of outplanted seedlings of selected tree species on the High Tatra Mts. windthrow area after the first growing season" pps
... the
seedling types of pine was almost 20% in autumn
and even 42% in spring outplanting. However, es-
pecially the comparison of bareroot and container-
ized spruce and pine seedlings in this ... pine seedlings which were in the advanced
phase of height growth at spring planting. Height in-
crement of containerized Scots pine seedlings from
spring outplanting with th...
Báo cáo lâm nghiệp: "Extent and distribution of beech (Fagus sylvatica L.) regeneration by adult trees individually dispersed over a spruce monoculture" ppsx
... densities in
the range of hundreds of individuals per hectare, P-
(2000) reported a density in the range of
hundreds of thousands in fenced groups of regen-
erated individuals. Taking into ... height and thickness
of the root collar of sample regenerated individuals
selected from within the fencing and outside of it.
e basic spatial statistic of the po...
Báo cáo lâm nghiệp: "Productivity and cost of manual felling with a chainsaw in Caspian forests" pptx
... the
production and cost of other harvesting machines or
systems used in the region and will be helpful for
the loggers in selecting an appropriate system under
certain stand and harvest circumstances.
e ... m.
e manual harvesting system examined consisted
of felling with a chainsaw. Felling was performed us-
ing a Stihl chainsaw with 3-horsepower (hp) engine
and bar len...
Báo cáo lâm nghiệp: "rigins and diversity of the Portuguese Landrace of Eucalyptus globulus" doc
... likely original collection
points. Although we argue against other potential areas of ori-
gin (e.g. King Island and the Otway Ranges), suggested by
some of the molecular data, it remains a possibility ... [8, 32]. Breeding programs for E. glob-
ulus have since been established in other countries including
Australia, Chile and Spain [12, 32]. In many cases the Aus-
tralian origin...
Báo cáo lâm nghiệp: "Survival and growth of Acacia mangium Willd. bare-root seedlings after storage and transfer from aeroponic culture to the field" pdf
... use of bare-root seedlings con-
ditioned in blown-up plastic bags allows the protection of
saplings from dehydration and transportation shocks. Field
trials in the context of industrial plantings ... shoots, in: Ministry of Forestry
of Indonesia (Ed.), Trials established in 1986–1987 in the Mecha-
nized Nursery and Plantation Project in South Kalimantan (ATA-
267), Ja...
Báo cáo lâm nghiệp: " Biomass and composition of understory vegetation and the forest floor carbon stock across Siberian larch and mountain birch chronosequences in Iceland" docx
... B., Beinar maelingar a kolefnisbin-
dingu skograektarsvaeda (Direct estimates of carbon sequestration
by afforestation), Procedings from Fraedathing landbunadarins
2004, pp. 269–272 (in Icelandic).
[27] ... of car-
bon from this compartment (Fig. 5). However, after ca. 50–
60% thinning (to 1 100 trees ha
–1
) the C-stock in ground veg-
etation of L5 had increased again and there wa...
Báo cáo lâm nghiệp: "Variability and heterogeneity of humus forms at stand level: Comparison between pure beech and mixed beech-hornbeam forest" ppsx
... ordination in the plan defined by axes
1 and 2 of the MCA; pure beech stand samples are shown by white squares and mixed stand ones by black points; for pure and mixed stands,
the centres of ... tracks,
heaps of residual branches and stumps were projected as supplemen-
tary individuals in the subspaces defined by the main factors of vari-
ance underlined by the MCA.
A with...
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