Altitudinal patterns of soil and microbial C:N:P stoichiometry in subtropical forests in Daming Mountain, South China
Frontiers in Earth Science,
Год журнала:
2025,
Номер
13
Опубликована: Апрель 7, 2025
Introduction
Altitude-induced
variations
in
hydrothermal
conditions
and
vegetation
affect
the
carbon
(C),
nitrogen
(N),
phosphorus
(P)
contents
both
soil
microbial
biomass.
However,
specific
patterns
of
changes
these
nutrients
their
stoichiometry
response
to
altitudinal
remain
unclear.
Methods
In
this
study,
we
analyzed
biomass
C:N:P
across
three
layers
(0–20,
20–40,
40–60
cm)
subtropical
mountain
ecosystems
on
Daming
Mountain,
South
China.
Results
Our
results
revealed
that
C
content
C:N
ratio
0–20
cm
layer
initially
increased
then
decreased
with
increasing
altitude.
Meanwhile,
P
decreased.
Soil
altitude
all
layers,
whereas
C:P
N:P
ratios
exhibited
opposite
trends.
For
along
gradient,
growth
was
mainly
restricted
by
P,
limitation
being
more
pronounced
at
mid-to-low
altitudes.
C,
N,
were
positively
correlated
ratios,
available
N
(AN),
(AP),
water
(SWC),
but
negatively
bulk
density,
pH
temperature.
contrast,
stoichiometric
or
non-significant
relationships
factors.
Notably,
AN,
AP,
SWC
dominant
factors
affecting
stoichiometry.
Discussion
These
findings
contribute
understanding
nutrient
responses
environmental
ecosystems.
Язык: Английский
Geographical variation and genetic diversity of Parashorea chinensis germplasm resources
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Окт. 16, 2024
Introduction
Parashorea
chinensis
is
a
rare
monodominant
species
in
southwest
China
known
for
its
production
of
high-quality
timber,
facing
decline
due
to
narrow
distribution,
human
interference
and
habitat
destruction.
However,
there
are
no
reports
on
genetic
diversity
geographical
variation
phenotypic
traits
P.
.
Methods
In
this
study,
characters
15
germplasms
resources
from
five
provenances
were
investigated,
their
relationships
with
environmental
factors
was
discussed.
Results
Our
results
revealed
rich
among
the
germplasms,
coefficients
ranging
3.63%
45.49%.
Among
studied
NP03
Napo
ML02
Mengla
region
exhibited
superior
traits.
Notably,
also
demonstrated
highest
diversity.
Genetic
differentiation
analyses
including
coefficient
(0.6264)
gene
flow
(0.3736)
illustrated
that
most
prevalent
populations.
Furthermore,
redundancy
analysis
showed
temperature
related
(maximum
air
temperature,
annual
mean
minimum
temperature)
significantly
affected
variation.
Similarly,
altitude,
longitude,
latitude,
precipitation
impacted
level
The
molecular
natural
population
followed
certain
pattern.
Discussion
finding
indicated
abundant
germplasms.
populations
low
levels
alongside
high
differentiation,
potentially
contributing
species'
rarity.
Based
our
results,
germplasm
could
be
used
as
parents
breeding
Overall,
study
provides
valuable
insights
into
conservation,
improvement,
utilization
Язык: Английский
Effect of mixed planting on soil nutrient availability and microbial diversity in the rhizosphere of Parashorea chinensis plantations
Frontiers in Microbiology,
Год журнала:
2024,
Номер
15
Опубликована: Окт. 15, 2024
Introduction
Parashorea
chinensis
Wang
Hsie
(
Pc
)
is
an
endangered
tree
species
endemic
to
tropical
and
subtropical
China.
However,
the
acidic
red
soil
areas
where
it
distributed
generally
face
nutrient
limitation.
The
study
of
effects
mixed
planting
on
biogeochemical
processes
contributes
sustainable
management
conservation
.
Methods
We
selected
pure
stands
collected
its
rhizosphere
bulk
samples
clarify
effect
microbial
community
status.
Results
results
showed
that
(1)
All
were
strongly
phosphorus-deficient
soils
(pH
<
4.0,
available
phosphorus
<10.0
mg·kg
−1
).
There
was
a
significant
aggregation
for
organic
C,
total
N
K,
biomass,
inorganic
P
fraction.
(2)
significantly
increased
water
content,
nutrients,
activities
β-1,4-glucosidase
urease,
biomass.
fractions
are
more
influenced
by
rhizosphere,
while
composition.
(3)
Fungi
their
ecological
functions
susceptible
than
bacteria
are,
have
higher
compositional
complexity
α-diversity
in
plantations.
And
can
improve
network
among
key
microorganisms.
(4)
correlation
between
microorganisms
environmental
factors
forests
forests.
Soil
P,
biomass
C
N,
β-1,4-glucosidase,
stable
driving
changes
fungal
bacterial
communities.
Conclusion
In
conclusion,
patterns
advantageous
plantations
improving
physicochemical
properties,
enhancing
effectiveness,
promoting
diversity,
especially
with
Eucalyptus
grandis
×
E.
urophylla
conducive
improvement
management,
which
provides
practical
references
relocation
protection
selection
fertility
planting.
addition,
highlighted
role
microenvironment
cycling
structure,
new
perspectives
deeper
understanding
soil-microbe-plant
interaction
mechanisms.
Язык: Английский
Effect of Inoculation with Rhizosphere Phosphate-Solubilizing Bacteria on the Growth and Physiological Characteristics of Parashorea chinensis
Forests,
Год журнала:
2024,
Номер
15(11), С. 1932 - 1932
Опубликована: Ноя. 1, 2024
Given
the
challenges
of
slow
growth
and
low
survival
rates
in
early
stages
Parashorea
chinensis
cultivation,
identifying
sustainable
methods
to
enhance
seedling
performance
is
critical
for
successful
reforestation
conservation
efforts.
This
study
aimed
address
these
by
investigating
growth-promoting
effects
phosphate-solubilizing
bacteria
(PSB).
One-year-old
seedlings
P.
chinesis
were
inoculated
with
PSB
strains
isolated
from
rhizosphere
soil
H.
Wang
plantations
Y3,
W5,
H8,
a
mixed
strain
(Mix),
as
control
(CK).
The
inoculation
on
growth,
photosynthetic
physiology,
plant
nutrient
status,
physiological
indicators
comprehensively
evaluated.
Results
showed
that
increased
height
basal
diameter
chinensis,
an
increase
1.56
cm
0.53
mm
compared
CK,
respectively,
though
differences
not
significant.
Mix
treatment
significantly
improved
photosynthesis,
increases
net
rate
(106.3%),
transpiration
(93.89%),
intercellular
CO2
concentration
(75.51%)
CK.
Nutrient
levels
including
total
nitrogen,
phosphorus,
potassium
15.98%,
25.54%,
32.12%,
treatments
Moreover,
stress
resistance
also
improved,
higher
proline
content,
soluble
sugar,
protein
levels.
Antioxidant
enzyme
activities
(SOD,
CAT,
POD)
9.83%,
23.66%,
292.32%,
while
MDA
content
was
reduced
69.01%.
acid
phosphatase
activity
111.88%.
In
conclusion,
inoculation,
particularly
strain,
promoted
uptake
efficiency
seedlings,
offering
promising
biotechnological
solution
improving
performance.
Язык: Английский