Frontiers in Environmental Science,
Год журнала:
2024,
Номер
12
Опубликована: Июнь 24, 2024
The
differences
in
mass
loss
of
leaf
litter
are
primarily
thought
to
be
driven
by
microbial
activity,
especially
fungi.
However,
the
existence
such
across
large
spatial
scales
has
not
been
well
explored
field
studies
and
underlying
mechanisms
difference
still
unclear,
for
role
different
fungal
guilds
driving
losses.
We
conducted
a
1-year
decomposition
study
within
each
four
coastal
wetlands
China
test
scale
(ranging
from
26°
N
41°
latitude).
In
wetland,
six
sites
including
three
composed
P.
australis
another
dominant
plant
species
typically
ecosystems
were
selected.
used
as
standard
material,
placing
it
into
bags
with
mesh
sizes
1
mm
4
mm,
respectively.
Final
was
examined
approximately
after
3,
9
12
months.
quantified
using
additional
at
compared
that
sites.
found
showed
clear
multiple
only
later
stages
decomposition,
which
independent
mesofauna
(mesh
size)
contribution
decomposition.
Furthermore,
observed
attributed
dissimilarities
initial
soil
community,
particularly
symbiotrophic
fungi,
rather
than
bacterial
community.
Our
results
provide
empirical
evidence
large-scale
have
linked
guilds.
These
indicate
fungi
might
play
direct
or
indirect
loss,
contributes
better
understanding
invites
in-depth
further
investigation
on
microbe-driven
difference.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Май 10, 2024
Abstract
Wildfires,
as
an
environmental
filter,
are
pivotal
ecological
disturbances
that
reshape
plant
communities
and
soil
dynamics,
playing
a
crucial
role
in
regulating
biogeographic
patterns
ecosystem
services.
In
this
study,
we
aim
to
explore
the
effects
of
wildfires
on
forest
ecosystems,
specifically
focusing
plant-soil
feedback
mechanisms
within
northeastern
margin
Qinghai-Tibet
Plateau
(QTP).
Utilizing
Partial
Least
Squares
Path
Modeling
(PLS-PM),
investigated
interrelationships
among
physicochemical
properties,
enzyme
activities,
species
diversity,
community
stability
at
varying
post-fire
recovery
stages
(5,
15,
23
years).
Results
indicated
early
stages,
rapid
changes
properties
such
decreased
pH
(
p
<
0.001)
increased
nutrient
availability
facilitate
emergence
successional
with
high
resource
utilization
traits.
As
evolved
toward
climax
community,
vegetation
exhibit
stability.
Furthermore,
activities
displayed
dynamic
corresponded
content,
directly
influencing
regeneration
diversity
communities.
Importantly,
our
study
documented
transition
influence
from
direct
positive
initial
phases
negative
impacts
later
while
indirect
benefits
accrue
through
activity.
Vegetation
composition
structure
changed
dynamically
time
during
succession.
Plant
absorption
accumulation
affected
dynamics
soil,
regeneration,
distribution,
diversity.
Our
results
underscore
complex
interactions
between
drive
post-wildfire,
highlighting
resilience
ecosystems
fire
disturbances.
This
contributes
understanding
processes
offers
valuable
insights
for
management
restoration
fire-affected
ecosystems.
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Июль 25, 2024
Forest
fires
play
a
pivotal
role
in
influencing
ecosystem
evolution,
exerting
profound
impact
on
plant
diversity
and
community
stability.
Understanding
post-fire
recovery
strategies
holds
significant
scientific
importance
for
the
ecological
succession
restoration
of
forest
ecosystems.
This
study
utilized
Partial
Least
Squares
Path
Modeling
(PLS-PM)
to
investigate
dynamic
relationships
among
species
diversity,
phylogenetic
soil
properties,
stability
during
various
stages
(5-year,
15-year,
23-year)
following
wildfires
northeastern
margin
Qinghai-Tibet
Plateau.
The
findings
revealed:
(1)
Over
time,
richness
significantly
decreased
(
Forests,
Год журнала:
2025,
Номер
16(2), С. 306 - 306
Опубликована: Фев. 10, 2025
(1)
Background:
As
population
growth
accelerates,
unsustainable
practices
such
as
excessive
cutting
and
burning
of
desert
plants
in
the
transition
zones
between
deserts
oases
have
led
to
widespread
vegetation
loss.
(2)
Methods:
The
experiment
was
conducted
oasis
zone
on
southern
edge
Taklamakan
Desert
from
2010
2023
year.
Among
treatments
included
a
control
group
(CK),
spring
(CS),
fall
(CF),
(BS),
flood
water
irrigation
(FI).
We
used
high-throughput
sequencing
determine
soil
microbial
composition
diversity
routine
laboratory
methods
physical
chemical
properties
enzyme
activities.
(3)
Results:
No
significant
differences
bacterial
alpha
(Chao1,
Dominance,
Observed_features,
Pielou_e,
Shannon,
Simpson)
across
different
long-term
disturbance
patterns.
In
fungi,
CK
treatment
showed
significantly
higher
Chao1,
Observed_features
indices
compared
BS
FI.
Principal
component
analysis
revealed
substantial
reduction
community
FI,
while
fungal
communities
were
lower
CS
BS,
CF,
FI;
(4)
Conclusions:
Soil
moisture
content,
electrical
conductivity,
organic
carbon,
activity
cellobiohydrolase
key
factors
shaping
community.
For
carbon
β-1,4-glucosidase
main
drivers.
