Báo cáo lâm nghiệp: "Pollen-limited seed set in ( Tamarindus indica L )" ppsx
Báo cáo lâm nghiệp: "Pollen-limited seed set in ( Tamarindus indica L.)" ppsx
...
effect
of
pollen
quality:
flowers
(n
=
50)
were
either
self-pollinated,
artificially
crossed
with
pollen
from
different
trees
or
allowed
to
pollinate
naturally.
The
seed
set
percentage ...
resource
limitation,
2)
post-fertilization
abortion
of
seeds,
and
3)
pollen
grain
limitation.
Materials
and
Methods
Tamarindus
indica
L.
(Caesalpinae)
is
a
trop...
Báo cáo lâm nghiệp: "Addressing spatial variability in provenance experiments exemplified in two trials with black spruc" pps
... (SAS
®
Institute Inc. 1999).
Spatial model
Second set of models allowed the modelling of
spatial patterns in residual variation. e goal was
to reveal possible local and global trends using
autoregressive ... for
analyzing field variety trials as it allows for the fitting
of spatial variability within field trials in a variety of
ways (C et al. 2000). Sample variograms were
cr...
Báo cáo lâm nghiệp: " Natural forest regeneration in spruce monocultures in the Ukrainian Beskids – prognosis by FORKOME model" ppt
... výsadbou – selektivní těžba smrku se
současnou výsadbou cílových dřevin: buku lesního (Fagus sylvatica L. ) a jedle bělokoré (Abies alba Mill.) s dodá-
ním jasanu ztepilého (Fraxinus excelsior L. ). Biomasa ... W et al. (1 982).
FORKOME model provides a possibility of de-
fining felling scenarios. e interface supports de-
termining the time of felling and diameters of tree
spec...
Báo cáo lâm nghiệp: " Growth of wild cherry (Prunus avium L.) in a mixture with other species in a demonstration forest" ppsx
... situation in
the codominant (main) layer while trees belonging to
class 3 have slimmer stems. However, data indicate
that a silvicultural intervention also in the main layer
is needed in the ... statistically highly significant. e differences
are clearly visible in Fig. 3, where also linear trends
are given. Trees with nearly the same dbh – but
belonging to dominant/codominant t...
Báo cáo lâm nghiệp: "Short Communication Differences in the structure, species composition and diversity of primary and harvested forests on Changbai Mountain, Northeast China" ppsx
... poles and large trees between
the two forests (P > 0.05).
Family Species
Shade
tolerant
a
Seedlings Saplings Poles Large trees Overall trees
PF LF PF LF PF LF PF LF PF LF
Salicaceae Salix matsudana ... rapid increase in recruitment
into the seedling and sapling layers. e fact that the
density of seedlings and saplings of the logged forest
increased, confirmed that tree regeneratio...
Báo cáo lâm nghiệp: "Coppice-with-standards in floodplain forests – a new subject for nature protection" potx
... consisting of oak (2 7.5%), ash
(2 3.5%), alder (2 7.6%), birch (1 1.6%), locust (1 .4%),
elm and maple (each 0.9%), poplar (1 .2%), and larch
(0 .4%) were planted in the Horka forest district.
In the ... 2009 (7 ): 306–311
e floodplain landscape belongs to the youngest
geological, geomorphological, and landscape forma-
tion in Europe. Both the origin and the d...
Báo cáo lâm nghiệp: "Red deer density in the air-polluted area of forest ecosystems in the Krušné hory" pdf
... used indirect methods of counting pellet
groups (FPG – Faecal Pellet Group). e FSC (Fae-
cal Standing Crop) method is aimed at counting
pellet groups on randomly selected plots normally
distributed ... reforestation includ-
ing plots No. 12 to 15, (E) Commercial forest including
plots No. 10 and 16.
RESULTS
Based on the repeated counting of faecal pellet
groups on 16 marked plots (No....
Báo cáo lâm nghiệp: "Evaluation of changes in the landscape management and its influence on animal migration in the vicinity of the D1 motorway in Central Bohemia" ppsx
... statistically
significant finding that in the individual traffic inten-
sities (A) 0–1,000 (vehicles/0.5 h), (B)1,001–2,000
(v/0.5 h), (C) ≥ 2,001 (v/0.5 h) collisions with wild-
life also are not regular. ...
recognizable and whether they are significant. It is
unlikely that in future the diversity of landscape will
increase (M 1993). When looking at the accel-
erating biological an...
Báo cáo lâm nghiệp: "Quality of wood in the stands of poplar clones" docx
... highest-quality classes being
intended mainly for the production of industrial ve-
neer while class B1 has slightly lower requirements
on the wood quality than class A1 and it starts al-
ready with minimal ... minimal diameter of logs 20 cm. Quality
classes C1.1–C1.3 represent good quality, average
quality and lower quality saw logs, and all have
minimal diameter 20 cm. Class C3 is inten...
![Báo cáo lâm nghiệp: "Stability of Norway spruce (Picea abies [L.] Karst.) stands in the Beskid Śląski and Beskid Żywiecki Mts. from the aspect of their nutrition status" pptx](https://media.store123doc.com/images/document/2014_08/07/medium_imq1407381712.jpg)
Báo cáo lâm nghiệp: "Stability of Norway spruce (Picea abies [L.] Karst.) stands in the Beskid Śląski and Beskid Żywiecki Mts. from the aspect of their nutrition status" pptx
... and
moderately deep at lower altitudes, mostly medium-
skeletal in their organic-mineral layers, and strongly
or very strongly skeletal (stony) in deeper layers. In
their granulometric composition ...
develops poorly and only partial tissue lignification
takes place (Table 4).
According to the standards set by C et al.
(1 990), the content of calcium in the second year
o...
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