Báo cáo lâm nghiệp: "Changes of partitioning and increased root lengths of spruce and beech exposed to ambient pollution concentrations in southern England" pdf
... Changes
of
partitioning
and
increased
root
lengths
of
spruce
and
beech
exposed
to
ambient
pollution
concentrations
in
southern
England
G.
Taylor
1
M.C. Dobson
2
P.H. ...
evidence
exists
to
suggest
that
drought
may
act
as
an
incit-
ing
factor,
accelerating
the
decline
of
forest
trees
exposed
to
chronic
doses
of
air
pollution.
For...
... bark of Norway
spruce contains more isorhapontin than astringin
(Fig. 3). e rapid decline of the levels of glycosides
was described in in vitro maintained excised bark
discs of Sitka spruce ... control). e decline in
the levels of isorhapontin and astringin continued
24 h after PF application representing less than 68%
and 50%, respectively, of the contents dete...
... pH–H
2
O is based on measuring pH of soil
samples in water (five portions of water to one por-
tion of soil); after 5 minutes of agitating and subse-
quent standing for minimally two hours (not ... number of mycorrhizae
proven in oak stands (P 2006) was statisti-
cally proven in spruce mycorrhizae only in the total
number of mycorrhizae (active and nonactiv...
... MAZZALI C., BALLARINDENTI A
., 2001.
Techniques of ozone monitoring in a mountain forest
region: passive and continuous sampling, vertical and
canopy profiles. In: Proceedings of the International ... aim to obtain the required
stocking density. e original forest cover at the
site was a mixed stand consisting of beech (76%),
fir (15%), oak (4%), and hornbeam (5%). App...
... years during
swarming (2011–2012).
We evaluated the correlation between the course
of temperatures and the beginning and intensity
of swarming of adults and discovered that adults
of both ...
after swarming in 2004 and 2008 will be clear after
we obtain control results of the abundance of the
2
nd
instar grubs in 2010.
Bulhary locality
Bulhary lies in southern...
... resistant to windstorm in the
plot. On the contrary, spruce seems to be the species
most susceptible to wind damage. Insect damage of
spruce is, with respect to the small proportion of
spruce in ... beech individual with 88 cm dbh
reached 13.4 m
3
. The results of measuring lying
deadwood show that beech is there apt to windthrow
during strong winds.
Fir –...
... are
the same of Table IV. SS is the sum of squares for error in arithmetic unit. In this case a and b and the coefficient of determination (R
2
) were
calculated using a nonlinear interpolation ... wood density and its variation
with height; (b) to obtain an equation for predicting wood vol-
ume; (c) to obtain allometric equations for predicting total bio-
mass and bioma...
...
12-h
loading
period;
the
five
remaining
plants
were
our
short-term
13
C
labelling
and
biomass
results
pointed
to
a
similarity
in
the
patterns
of
C
allocation
to
fine
roots
of ...
proportion
of
newly
incorpo-
rated
atoms
relative
to
total
atoms
in
a
given
sample,
and
is
also
interpreted
as
an
index
of
C
turnover
whereas
%P
describes...
...
as
fertilization,
stem
girdling,
root
pruning
or
root
flooding,
can
favor
flowering
(Bonnet-
Masimbert,
1982).
Roots
are
also
conside-
red
to
be
the
major
site
of
cytokinin
synthesis
(Kende, ...
involvement
of
plant
growth
sub-
stances
(PGS)
in
flowering
promotion
in
conifers
was
analyzed
in
relation
to
the
level
of
gibberellins
(Pharis
e...
...
often
occurs.
The
main
objective
is,
therefore,
to
establish
haploid
cell
lines
of
selected
Poplar
clones
from
anthers
which
will
then
be
regenerated
into
shoots
and
roots ...
poplar
organogenesis
and
regeneration
(Wolter,
1968;
Russel
and
McCown,
1988);
5)
transcription
of
desirable
genes
into
poplar
and
increased
recovery
of
transformed
p...