Báo cáo lâm nghiệp: "Preliminary study on phloemogenesis in Norway spruce: influence of age and selected environmental factors" ppsx
Báo cáo lâm nghiệp: "Preliminary study on phloemogenesis in Norway spruce: influence of age and selected environmental factors" ppsx
... variability of xylem cell
formation in the last tree ring does not aff ect the
function of xylem tissues as a whole considerably.
e conducting phloem of Pinaceae consists of
living, mature ... 8.0
Old stand 36.9 35.3 20.1
226 J. FOR. SCI., 57, 2011 (5): 226–232
JOURNAL OF FOREST SCIENCE, 57, 2011 (5): 226–232
Preliminary study on phloemogenesis in Norway spruce:...
Báo cáo lâm nghiệp: "Lysimetric study of eucalypt residue management effects on N leaching and mineralization" potx
... pre-
dominant, or in plantations in Congo [25], where nitrification
and amonification were of the same order of magnitude. This
suggests that the effect of eucalyptus harvest residues alone on
the mineral ... residues continued to present net
mineralization (2.4 and 2.0 mg N kg
−1
soil in NW and con-
trol, respectively).
Cumulative net N mineralized during incubation period u...
Báo cáo lâm nghiệp: "Complex study of foliage nutrient status in ash fertilized Scots pine stands in Lithuani" pptx
... 0.06
N concentration in mineral topsoil (%)
N concentration in the cur.yr. needles,
(%)
in 2002 in 2004
Lineární (in 2002) Lineární (in 2004)
Fig. 5. Correlations of N concentrations
in the ... 2005. Effect of
wood ash fertilization on stand growth, soil, water and nee-
dle chemistry, and berry yields of lingonberry (Vaccinium
vitis-idaea L.) in Scots pine stand i...
Báo cáo lâm nghiệp: "Moisture effect on carbon and nitrogen mineralization in topsoil of Changbai Mountain, Northeast China" pptx
... of soil organic matter of those 4 elevations
(Table 1). e partial in uence of elevation and as-
sociated vegetation type and the effect of moisture-
elevation interaction on C
0
and C
0
k indicated ... analysis of GLM program) showed that on
all days of incubation both the soil moisture and
elevation significantly affected the rates of soil C
mineralization durin...
Báo cáo lâm nghiệp: "Frost damage on the terminal shoot as a risk factor of fork incidence on common beech (Fagus sylvatica L.)" docx
... relationship and to quantify the effect of
damage on forking. We took advantage of a young open exper-
imental beech plantation whose genetic origin, site conditions
and environment in the vicinity of the ... Distribution of forked and unforked trees in plots P1 and P2, individually (Tabs. Ia and Ib respectively) and then together (Tab. Ic),
depending on frost damag...
Báo cáo lâm nghiệp: "Comparative study species" pdf
... Comparative
study
of
nitrogen
assimilation
in
woodland
species
J.
Pearson,
E.C.M.
Clough
J.L.
Kershaw
Department
of
Biology
(Darwin),
University
College
London,
Gower
Street,
London
H!F6B7;U./<.
Introduction
Trees ...
Sitka
spruce
(0.29)
or
Norway
spruce
(0.49).
In
the
case
of
Scots
pine
and
birch
a
marked
seasonal
variation
in
leaf
NR
ac-
ti...
Báo cáo lâm nghiệp: "phosphate fertilization on trace element nutrition pinaster grown in a sandy acid soil" pot
...
problem
of
micronutrient
nutrition.
Consequently,
we
chose
to
study
copper
and
boron,
in
addition
to
zinc
and
manga-
nese,
known
or
suspected
to
be
involved
in
deficiency
in ...
measured
in
soil;
consequently,
variation
in
micronutrient
levels
in
adult
leaves
should
be
considered
as
the
result
of
comon
P-fertilization
but
not
as
an
i...
Báo cáo lâm nghiệp: "phytotoxic solutions on the respiration of mycorrhizal and non-mycorrhizal spruce roots (Picea abies L. Karst.) Effect of" pot
...
electron
transport
chain,
and
by
using
various
decoupling
agents,
such
as
FCCP
(Merlin,
1988),
it
should
be
pos-
sible
to
obtain
a
better
understanding
of
the
interactions ...
kinetics
of
oxygen
consumption
by
excised
roots
in
a
liquid
The
next
stage
in
these
studies
is
the
investigation
of
the
microcosm
(cell
unit)
to
determine
the
part
o...
Báo cáo lâm nghiệp: "Experimental study of pine ectomycorrhizae: ectomycorrhizal organization after girdling of the hypocoty" potx
...
in
the
mantle
and
on
the
plasmalemma
of
the
fungus
and
host
cortical
cells
in
the
Hartig
net
(Lei
and
Dexheimer,
1988).
In
mycorrhiza
of
host
plants
that
have
undergone ...
any
morphological
transformation.
Finally,
the
penetration
of
the
Hartig
net
hyphae
inside
living
cells
and
papilla
for-
mation
suggest
that,
under
these
condi-
tions...
Báo cáo lâm nghiệp: "Rodent-caused damage to forest trees from the viewpoint of forestry practice" potx
... reforestation (% stands)
damage (% stands)
repeated reforestation (% stands)
damage (% stands)
Fig. 1. Extent of damage by small mammals and repeated reforestation (% stands) in relation to individual ...
of damage and characteristics of vegetation of
severely damaged plots.
(3) Control of damage caused by small mammals.
Information gathered in this section regarded
metho...