Báo cáo lâm nghiệp: " Decomposition dynamic of fine roots in a mixed forest of Cunninghamia lanceolata and Tsoongiodendron odorum in mid-subtropics" docx
... fir (Cunninghamia lanceolata (Lamb.) Hook.) and Tsoong’s tree (Tsoongiodendron odorum Chun) in Sanming, Fujian,
China. In a 540 d period of decay, fine roots in all litter bags decomposed in a three-phase ... Percentage of nutrient remaining over time in decomposing fine roots of Chinese fir and Tsoong’s tree. Bars indicate standard error.
Fine root de...
...
indicated.
B -
Diagram
of
a
transverse
projectiorz
of
an
apical
l1l
eristem.
Catat!hyll
primordia
are
counted
during
dissectioll.
The
twerzty
last
forined
cataphylls
are
not ...
meaSll
rement,
Points
A
and
B
are
located
on
the
same
contact
parastichy
(5
in
this
example)
If
x
is
the
number
of
scales
separating
the
two
points
then
AB15x
i...
... The co-inertia analysis was then
run on the CA of faunal data and the PCA of environmental variables
to (i) isolate new axes in both multidimensional spaces and (ii) create
a factorial plane which ... oceanic with a mean annual temperature of +10
◦
Cand
a mean annual precipitation of 800 mm [19]. All stands were located
on a plateau with more than 80 cm of loess as par...
... intra ring
density and of anatomical characteristics measured on the
transverse plane all along the ring in order to obtain an anato-
mical interpretation of the wood density microvariations
measured ... were classified in age classes
of 30 years and ring widths of 1 mm. Only the classes containing data
for more than 50 rings and at least 5 trees were kept. For each of the...
...
chamber
air
and
ambient
air
exaggerating
chamber
leaks
that
are
normally
small.
Leaks
cause
an
underestimation
of
the
assimilation
rate,
and
consequently,
an
overestimation
of ...
temperature
increases
can
often
be
held
to
under
2-3°C.
The
data
of
Brooks
and
Farquhar
(1985)
on
spinach
indicate
that
a
2°C
temperature
increase
at
30°C
would
c...
...
initiated
during
the
summer
of
the
previous
year.
Investigations
of
climatic
factors
taking
place
during
the
assumed
initiation
stage,
have
shown
a
significant
correlation
between ...
measured
over
6
years
(1979-1984)
for
a
30
seedlings
(age :
11
years)
sampled
in
a
naturally
regenerated
stand
of
black
pine,
located
at
Mont
Ventoux
in
so...
...
and interval. Studied variables are classified by their
character as extensive and intensive, by the time
interval length as momentary and interval, by the
course of values as periodical and ...
the development of commercial forest production
and in terms of the implementation of the strategy
of sustainable life and application of principles of
near-natural...
... 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 (exponential) regression ... DISCUSSION
e values of total biomass of vital fine roots show
a high variability in the investigated soil profile. e
average value of the fine root biomass calculated...
... Schreiber L., Chemical analysis and
immunolocalisation of lignin and suberin in endodermal and
hypodermal rhizodermal cell walls of developing maize (Zea mays
L.) primary roots, Planta 209 (1999) 1–12.
[52] ... radial water water flow path in a root: root diameter
(mean of largest and smallest diagonal), average periderm thickness,
average number of peridermal cell laye...
... “Woody Caatinga” [36] showing as dominant
botanical families: Mimosaceae, Caesalpiniaceae, Fabaceae
and Bignoniaceae [12]. In 1993 two accidental burns reached
about 90% of the ecological reserve, ... high
infiltration rate and low levels of organic matter [12]. The mean tem-
perature in a year is 26–29 °C. An area of 1.08 hectare was cleared of
Carrasco plants and prepare...