Báo cáo lâm nghiệp:"Predicting the probability of seed germination in Pinus sylvestris L and four competitor shrub species after fire" doc
Báo cáo lâm nghiệp:"Predicting the probability of seed germination in Pinus sylvestris L. and four competitor shrub species after fire" doc
... high
temperatures favoured the germination of Genista florida.
Therefore, a balance between the elimination of competitor
shrub species and the stimulation of the germination of Pinus
sylvestris seeds must be ... 2 log likelihood including only the constant of the complete model.
The models in bold are the selected ones. The coefficients of the...
Báo cáo lâm nghiệp: "Predicting the vertical location of branches along Atlas cedar stem (Cedrus atlantica Manetti) in relation to annual shoot length" pdf
... consistent
model for predicting the number and the vertical location on
the bole of all the primary branches, including the interwhorl
branches.
Branch survival and subsequent size mainly depend on both
their ... was the initial state downwards in
order to model the length of the top zone.
The core of the proposed data analysis methodology consists in
iterati...
Báo cáo lâm nghiệp: "Predicting the environmental thresholds for cambial and secondary vascular tissue development in stems of hybrid aspen" pptx
... cambial perimeter. The number of fusiform cells in the
radial cell files is related to the number of periclinal divisions
in both the fusiform initials and their meristematic derivatives.
Their cellular ... case of the terminal latewood cells, where development proceeds below the
values given.
b
F – fusiform cells. Terminal latewood cells derive from this type of c...
Báo cáo lâm nghiệp: "Predicting the potential distribution of Sirex noctilio (Hymenoptera: Siricidae), a significant exotic pest of Pinus plantations" pot
... million trees with a royalty value of A$10–12 millions
were killed in a single area in southern Australia [16]. It is now
established in the majority of Pinus plantations (mainly P. radiata)
in ... proximity of infested stands within Chile and
in neighbouring Argentina, and the high susceptibility of
P. radiata, the chances that S. noctilio will establish in t...
Báo cáo lâm nghiệp: "On the occurrence of web-spinning sawflies of the genus Cephalcia (Hymenoptera, Pamphiliidae) in the Czech Republic" potx
... started in the stud-
ied localities at the end of May or at the beginning
of June depending on the actual weather. C. alpina
flew first, followed by C. erythrogaster and C. arven-
sis, the last flying ...
in Fig. 1 and Table 3. e first canonical axis explains
38.8% of variability, both canonical axes explain 53%
of variability (Table 2). All axes explain 100% of var...
Báo cáo lâm nghiệp: "About the benefits of poststratification in forest inventories" potx
... independently of the original dis-
tribution of the variable of interest. Here, although
the estimate of the true mean is unbiased and the
variance of the mean decreases (Tables 3 and 4) with
increasing ... random sampling (Fig. 6b), gains in precision
are only slightly larger. Probably, the little size and
spatial distribution of connected areas of th...
Báo cáo lâm nghiệp: "Earthworm (Lumbricidae) assemblages of forest ecosystems in the anthropogenically disturbed area of the eastern Krušné hory Mts. (Czech Republic)" pps
... renewal the site prepa-
Table 2. e dominance of species of the family Lumbricidae caught by the method of tullgrens and individual col-
lection (2009)
Species
Method of tullgrens
Individual
collection ... lit-
terfall and effects on light or shade. Consequently,
dense larch stands were the cause of decreased de-
velopment of the herb layer.
It is interesting t...
Báo cáo lâm nghiệp: "Optimising the management of even-aged Pinus sylvestris L. stands in Galicia, north-western Spain" ppt
... MATERIALS AND METHODS
The stand level offers the first meaningful level of decision mak-
ing, and the results obtained for the stand level management can be
used as guidelines in forest level planning ... thinning
intensity depends on the number of the thinning, the intensity
increasing from the first thinning to the fourth. The intensity of
the first thinning is...
Báo cáo lâm nghiệp: " Optimising the management of uneven-aged Pinus sylvestris L. and Pinus nigra Arn. mixed stands in Catalonia, north-east Spain" pps
... given combination of DVs was fed into
the simulator, which simulated cuttings and the development of the
stand, and from these results the value of the objective function was
calculated. The objective ... considerations in
the optimisation problem, the effect of retaining a minimum
number of very large tress in the stand was analysed. The lower
profitabil...
Báo cáo lâm nghiệp: "Optimising the management of Pinus sylvestris L. stand under risk of fire in Catalonia (north-east of Spain)" ppsx
... stand age when the first thinning occurs; years since
previous thinning for the other thinnings; remaining basal area.
For the final cutting: years since the last thinning to the first regen-
erative ... destroyed
in Portugal, Spain and southern Italy [28]. The problem is
becoming increasingly serious. The number of fires and the
area burned was greater in the 1980...
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