The dynamics of bacterial communities during leaf decomposition of various species combinations in riparian forest buffers in China
Forest Ecology and Management,
Год журнала:
2025,
Номер
584, С. 122607 - 122607
Опубликована: Март 2, 2025
Язык: Английский
Understory Vegetation Regulated the Soil Stoichiometry in Cold-Temperate Larch Forests
Plants,
Год журнала:
2025,
Номер
14(7), С. 1088 - 1088
Опубликована: Апрель 1, 2025
Carbon
(C),
nitrogen
(N),
and
phosphorus
(P)
are
vital
nutrients
in
the
soil,
exerting
a
profound
influence
on
primary
productivity
of
ecosystems.
However,
our
understanding
how
understory
influences
soil
their
stoichiometry
remains
limited,
especially
cold-temperate
forests
where
plays
crucial
role
mediating
nutrient
cycling.
To
elucidate
effect
vegetation
nutrients,
three
typical
larch
forests,
namely
Sphagnum-Bryum-Rhododendron
tomentosum-Larix
gmelinii
forest
(SLL),
Rhododendron
dauricum-Larix
(RL),
(LL),
were
selected
region
northeast
China
to
determine
organic
carbon
(SOC),
total
(TN),
(TP)
contents,
stoichiometric
characteristics
0-100
cm
depth.
The
results
revealed
following:
(1)
Significant
differences
its
existed
among
different
types
(p
<
0.001),
with
SLL
displaying
highest
mean
SOC,
TN,
TP
as
well
C:N,
C:P,
N:P
ratios,
whereas
RL
exhibited
lowest
values
0.05).
(2)
Across
profile,
content
showed
decreasing
trends
depth,
significant
layers.
(3)
Variations
significantly
correlated
bulk
density,
pH,
temperature,
water
content,
porosity,
capillary
porosity
This
study
underscores
necessity
further
consideration
impact
future
research
Язык: Английский
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
High nutrient utilization and resorption efficiency promote bamboo expansion and invasion
Journal of Environmental Management,
Год журнала:
2024,
Номер
362, С. 121370 - 121370
Опубликована: Июнь 1, 2024
Язык: Английский
Ecological-economic assessment of forest land degradation neutrality in the Indus River Basin of Pakistan
Environment Development and Sustainability,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 10, 2024
Язык: Английский
Leaf functional traits of Daphniphyllum macropodum across different altitudes in Mao’er Mountain in Southern China
Frontiers in Forests and Global Change,
Год журнала:
2024,
Номер
7
Опубликована: Июль 17, 2024
Investigating
functional
traits
among
mountain
species
with
differing
altitude
requirements
is
integral
to
effective
conservation
practices.
Our
study
aims
investigate
the
structural
and
chemical
characteristics
of
Daphniphyllum
macropodum
leaves
at
three
altitudes
(1100
m,
1300
1500
m)
across
southern
China
provide
insight
into
changes
in
leaf
(LFT)
as
well
plant
adaptations
response
changing
environmental
conditions.
Leaf
include
thickness
(LT),
area
(LA),
specific
(SLA),
tissue
density
(LD),
respectively,
while
properties
carbon-nitrogen-phosphorus
(C:N:P)
contents
ratios,
such
C/N,
C/P,
N/P.
findings
demonstrated
significant
effect
on
both
(LT,
SLA,
LD)
aspects
(N,
N/P)
LFT.
In
particular,
1100
m
differed
greatly,
having
lower
SLA
values
than
m.
Observable
trends
included
an
initial
increase
followed
by
a
decline
rose.
Notable
them
were
LT,
LD,
N,
N/P
locations.
Traits
significantly
higher
m;
C/N
displayed
inverse
trend,
their
lowest
occurring
Furthermore,
this
research
various
degrees
variation
LFT,
exhibiting
greater
fluctuation
traits.
Robust
correlations
observed
certain
traits,
SLA.
interdependency
relationships
between
N
P
interconnectedness.
Redundancy
analysis
indicated
that
soil
factors,
specifically
content,
exerted
strongest
impact
At
D.
employed
acquisition
strategies;
however,
strategies
emerged,
showing
shift
from
conservative
ones.
Язык: Английский
Seasonal dynamics of soil ecosystems in the riparian zones of the Three Gorges Reservoir, China
Global Ecology and Conservation,
Год журнала:
2024,
Номер
54, С. e03174 - e03174
Опубликована: Сен. 2, 2024
Riparian
soils,
together
with
vegetation,
play
a
crucial
role
in
supporting
biodiversity
and
driving
biogeochemical
processes
within
river
ecosystems.
Conservation
of
riparian
soils
artificial
planting
are
essential
for
ecosystem
recovery
following
land
degradation.
Researchers
focus
on
examining
soil
nutrients,
microbial
biomass,
organic
acid
metabolism
the
interactions
between
plants
along
riverbanks.
However,
seasonal
responses
to
plantations
have
been
infrequently
reported
existing
literature.
This
study
investigates
influence
variations
conditions
growth
artificially
planted
species
zones
Three
Gorges
Dam
Reservoir
(TGDR)
China.
The
sampled
include
Cynodon
dactylon,
Hemarthria
altissima,
Salix
matsudana.
These
provide
valuable
insight
into
properties
zones,
assessing
across
different
seasons:
T1
(spring),
T2
(summer),
T3
(autumn).
results
demonstrated
significant
changes
matter,
ammonium
nitrogen,
nitrate
other
indicators
T3.
Apart
from
invertase
activity
H.
altissima
soil,
enzyme
peaked
during
T1.
Dominant
bacteria
were
examined
using
high-throughput
16S
rDNA
sequencing,
revealing
that
available
belong
62
phyla
211
classes.
Among
most
abundant
Proteobacteria
Actinobacteria,
averaging
over
60%
all
samples.
Principal
component
analyses
accounted
62.81%
(T1),
50.57%
(T2),
54.08%
(T3)
variation
observed
study,
indicating
predominantly
influenced
by
phases,
assuming
factors
remained
constant.
Pearson
correlation
analysis
(p
<
0.05)
identified
strong
positive
correlations
physical
three
plant
(r
≤
0.94),
as
well
negative
bacterial
communities
-1.00).
findings
suggest
selected
well-suited
cultivation
zone
TGDR.
enhances
our
understanding
dynamics
environments,
offering
practical
insights
their
management.
Язык: Английский
Conservation Implications of Vegetation Characteristics and Soil Properties in Endangered Mangrove Scyphiphora hydrophyllacea on Hainan Island, China
Sustainability,
Год журнала:
2024,
Номер
17(1), С. 191 - 191
Опубликована: Дек. 30, 2024
Scyphiphora
hydrophyllacea
is
an
endangered
mangrove
species
in
China.
Over-exploitation
and
coastal
development
have
drastically
reduced
its
distribution
population,
now
limited
to
the
Qingmei
Port
(Sanya)
Qinglan
(Wenchang).
Despite
critical
status,
research
on
ecological
roles
remains
limited.
This
study
examines
characteristics
of
S.
communities
their
relationship
with
soil
properties.
A
total
17
from
11
families
14
genera
were
recorded.
TWINSPAN
classification
identified
two
distinct
community
types:
community.
Significant
biodiversity
differences
found
only
tree
layer,
no
shrub
or
herbaceous
layers.
The
importance
value
within
arbor
layer
exhibited
variability
across
communities,
serving
as
associated
a
dominant
community,
suggesting
potential
barriers
natural
regeneration.
Redundancy
analysis
(RDA)
revealed
that
key
factors
influencing
hydrophyllacea’s
include
electrical
conductivity
(EC),
phosphorus
(TP),
nitrogen
(TN),
organic
content
(SOC),
carbon/nitrogen
ratio
(C/N).
We
propose
high
salinity
deficiency
may
act
limiting
regeneration
hydrophyllacea.
Язык: Английский
Морфологічні особливості лісової підстилки старовікових лісів на природно-заповідних територіях Західних регіонів України
Scientific Bulletin of UNFU,
Год журнала:
2024,
Номер
34(8)
Опубликована: Дек. 23, 2024
Досліджено
морфологічні
особливості
лісової
підстилки
корінних
деревостанів
стиглої
та
перестійної
вікових
груп
(старовікові
ліси),
що
відповідають
природному
типу
лісорослинних
умов.
Дослідження
виконано
на
території
трьох
національних
природних
парків
"Сколівські
Бескиди",
"Бойківщина",
Ківерцівського
національного
природного
парку
"Цуманська
пуща"
заповіднику
"Розточчя".
За
результатами
проведених
досліджень
встановлено,
запаси
у
весняний
період
в
листяних
лісах
за
участі
бука
явора
змінюються
межах
16,16-18,16
т·га⁻¹
(НПП
"Бойківщина"),
грабово-дубовому
лісостані
–
12,0
(Ківерцівський
НПП
пуща").
У
лісових
екосистемах,
сформованих
ялицево-буково-ялиновомими
деревостанами
Бескиди"),
є
дещо
вищими
24,2
т·га⁻¹,
і
дубово-буковому
сосняку
заповідника
"Розточчя"
від
31,5
т·га⁻¹.
більшості
досліджуваних
підстилок
старовікових
лісів
діагностуються
три
підгоризонти
L,
F
H,
рідше
два
‒
L
+
H.
запасах
частка
представлена
свіжим
опадом,
становить
21-35
%.
Дещо
більшу
частку
займає
підгоризонт
32-45
Цей
горизонт
формує
напіврозкладене
листя,
хвоя,
гілки
плоди.
Підгоризонт
Н
(28-47
%)
детрит,
який
залежить
складу
деревних
порід,
висоти
н.р.м.
кількісного
видового
організмів-деструкторів,
активно
беруть
участь
розкладі
підстилки.
фракційному
складі
здебільшого
переважає
активна
фракція
(листя,
детрит).
Неактивну
фракцію
формують
плоди,
а
їх
22-40
Зроблений
детальніший
аналіз
фракційного
підгоризонтами
виявив,
детриту
відсутня,
тоді
як
підгоризонті
не
облікуються
фракції
листя
хвої.
Зазвичай
сформований
детритом
напіврозкладеними
гілками
плодами,
переважно
більших
розмірів.
З'ясовано,
підстилках
з
незначною
потужністю
(менше
2
см)
важко
виокремити
підгоризонти.
більше
2-3
см
добре
Н.