Forests,
Год журнала:
2024,
Номер
15(8), С. 1293 - 1293
Опубликована: Июль 24, 2024
Canopy
gaps
can
result
in
abiotic
heterogeneities
and
diverse
niches
from
gap
borders
to
centers,
potentially
affecting
fine
root
decompositions
mediated
by
soil
fungal
communities.
Despite
extensive
discussions
on
the
relationship
between
fungi
decomposition,
mechanism
which
locations
regulate
decomposition
through
community
remains
elusive.
Here,
we
conducted
an
situ
field
experiment
of
Chinese
Toon
(Toona
sinensis)
roots
a
low-efficiency
weeping
cypress
(Cupressus
funebris)
plantation
forest
across
three
microhabitats:
borders,
closed
canopy
areas.
Soil
communities
were
determined
using
internal
transcribed
spacer
(ITS)
sequencing
after
two
years
incubation.
Results
showed
that
properties
nutrient
content
residual
varied
microhabitats,
with
exhibiting
highest
rates.
While
α-diversity
remained
relatively
consistent,
taxonomic
compositions
differed
significantly.
Decomposition
rates
did
not
show
significant
correlations
properties,
observed
ASVs,
or
overall
composition.
However,
they
positively
correlated
relative
abundance
saprotrophic
Sordariomycetes,
turn
total
nitrogen
(with
correlation),
peaking
at
borders.
Overall
variations
primarily
driven
temperature
magnesium
roots.
Further
analysis
revealed
high
similarities
low
dispersal
limitations
areas,
more
phylogenetically
clustered
These
results
demonstrate
possess
rate,
likely
due
centralization
functions
such
as
saprotrophs
existing
“microbial
seed
bank”
migrating
findings
highlight
key
role
fungi,
especially
stressing
importance
fungi-driven
mechanisms
cycling,
also
informing
sustainable
management
practices.
Forests,
Год журнала:
2024,
Номер
15(3), С. 449 - 449
Опубликована: Фев. 27, 2024
Forest
degradation,
driven
by
human
and
natural
factors,
diminishes
ecological
functions
carbon
storage.
Understanding
the
complex
dynamics
of
soil
pools
is
crucial
for
global
cycle,
although
these
are
poorly
understood.
This
study
examines
how
different
thinning
intensities
influence
seasonal
cycling
in
degraded
forests.
ANOVA
revealed
significant
differences
properties
across
treatments
(p
<
0.05).
Redundancy
analysis
random
forest
analyses
were
used
to
explore
relationships
among
intensities,
properties,
sequestration.
Thinning
significantly
altered
attributes,
as
field
experiments
data
analysis.
Moderate
(20%
intensity)
enhanced
litter
retention
nutrient
levels
year-round
Seasonal
variations
affected
lower
improved
sequestration
spring
summer.
Conversely,
higher
led
loss
autumn
winter.
Litter
carbon,
fine
root
correction
factor
respond
examined
through
redundancy
analyses.
Findings
indicate
moderate
effectively
enhances
Strategically
planned
could
aid
climate
change
mitigation
boosting
storage,
influencing
management
conservation.
Abstract
Background
and
aims
The
quantification
of
plant
roots
from
soil
represents
a
pivotal
step
in
many
studies
ecology
science.
However,
the
substantial
time
investment
required
for
this
process
often
considerable
impediment
to
research
progress.
objective
study
is
evaluate
propose
time-saving
method
minimize
collecting
without
compromising
data
integrity
compared
traditional
approaches.
Methods
proposed
Sub-sample
Approach
(SA)
requires
fine
sub-sample
subsequently
leading
calculations
estimate
total
root
traits
(mass,
length,
length
distribution
among
diameters)
within
sampled
core.
A
comparative
analysis
was
carried
out
on
harvesting
between
meticulous
sample
cleaning
(Conventional
Approach,
CA)
SA.
Moreover,
these
methods
were
assessed
across
different
sites
including
grassland,
oak
forest,
olive
orchard.
Results
conducted
resulted
high
heterogeneity
processing
when
employing
CA
(ranging
2.6
27.6
h
per
sample).
Conversely,
adoption
SA
reduced
less
variation
samples
37
112
min
Remarkably,
trait
obtained
using
showed
similarity
those
through
CA.
Conclusion
offers
remarkable
advantage
over
by
significantly
reducing
needed
collection
core
samples.
exhibits
lower
variability
sites,
while
maintaining
consistency
qualitative
quantitative
EarthArXiv (California Digital Library),
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 5, 2024
Overpopulated
ungulates
reduce
the
biomass
of
understory
vegetation
and
promote
expansion
unpalatable
plants
in
world
forests.
These
degradations
possibly
influence
sensitivities
soil
respiration
(Rs)
heterotrophic
(Rh)
to
temperature
moisture.
Here,
we
examined
this
possibility
a
cool-temperate
forest
southern
Kyushu,
Japan.
At
study
site,
dominant
vegetation,
dwarf
bamboo
(Sasa;
Sasamorpha
borealis),
has
been
lost
replaced
by
an
shrub,
Asebi
(Pieris
japonica),
owing
sika
deer
feeding.
We
targeted
three
types,
namely,
Sasa
(SU),
no
(NU),
(AU).
The
Rs,
Rh,
temperature,
volumetric
water
content
(SVWC)
were
measured
at
points
each
type
using
automatic
opening/closing
chamber
system
from
August
2022
November
2023.
also
evaluated
conditions
such
as
surface
litter
amount,
fine
root
biomass,
physio-chemical
properties
explore
factors
influencing
sensitivity
proxy
(Q10)
Rs
Rh.
temporal
variation
Rh
was
affected
strongly
weakly
SVWC
for
all
types.
Differences
Q10
among
SU,
NU,
AU
comparable
differences
measurement
within
same
type.
Spatial
explained
respectively.
There
amount
lack
difference
can
be
minimal
runoff
associated
with
alteration
SU
NU
due
flat
topography.
Our
findings
indicate
that
loss
species
replacement
caused
do
not
affect
or
our
which
is
characterized
Environmental Pollution,
Год журнала:
2024,
Номер
364, С. 125315 - 125315
Опубликована: Ноя. 20, 2024
To
address
plastic
pollution
in
agricultural
soils
due
to
polyethylene
film
mulch
used,
biodegradable
is
being
studied
as
a
promising
alternative
material
for
sustainable
agriculture.
However,
the
impact
of
and
microplastics
on
soil
carbon
remains
unclear.
The
field
experiment
was
conducted
with
Poly
(butyleneadipate-co-terephthalate)
debris
(PBAT-D,
0.5-2
cm),
low-density
(LDPE-D,
cm)
microplastic
(LDPE-Mi,
500-1000
μm)
contaminated
(0%
(control),
0.05%,
0.1%,
0.2%,
0.5%,
1%
2%
w:w)
planted
soybean,
explore
potential
impacts
respiration
(Rs),
organic
(SOC)
fractions
(microbial
biomass
(MBC),
dissolved
(DOC),
easily
oxidizable
(EOC),
particulate
(POC),
mineral-associated
(MAOC)),
C-enzymes
(β-glucosidase,
β-xylosidase,
cellobiohydrolase).
Results
showed
that
PBAT-D,
LDPE-D
LDPE-Mi
significantly
inhibited
Rs
compared
control
during
flowering
harvesting
stages
(p<0.05).
SOC
increased
PBAT-D
treatments
at
both
stages,
stage,
but
decreased
stage.
In
treatments,
POC
DOC
MAOC
stages.
MBC,
EOC
MBC
while
For
C-enzymes,
no
significant
inhibition
observed
they
were
all
It
concluded
facilitates
sequestration,
which
may
potentially
alter
pool
emissions.
key
significance
this
study
overall
effects
different
forms
dynamics,
inform
future
efforts
farmlands.
Forests,
Год журнала:
2024,
Номер
15(9), С. 1500 - 1500
Опубликована: Авг. 27, 2024
Within
this
study,
we
evaluated
the
fine
root
(trees
and
understory
vegetation
combined)
morphological
traits,
production
(FRP),
carbon
(C)
input
with
litter
in
forest
stands
(dominated
by
either
coniferous
or
deciduous
trees)
clearcut
areas
(previously
dominated
nutrient-rich
organic
soils.
The
study
was
conducted
26
sites
hemiboreal
land
Latvia
summarizes
results
obtained
a
two-year
(2020–2022)
using
ingrowth
method.
Traits
of
roots
varied
significantly
depending
on
development
stage
(stand
area),
dominant
tree
species
type
(coniferous
deciduous),
soil
drainage
status
(drained
naturally
wet).
According
to
second
year,
mean
FRP
among
groups
from
0.58
±
0.13
1.38
0.28
t
ha−1
yr−1,
while
C
ranged
0.06
0.68
0.14
yr−1.
More
than
half
(59
4%)
total
occurred
upper
0–20
cm
layer.
tended
correlate
positively
C/N
ratio
negatively
pH
nutrient
concentration.
Incubating
cores
for
at
least
two
years
is
strongly
recommended
accurately
estimate
annual
input.
This
helps
avoid
potential
underestimation
that
may
occur
when
only
one
incubation
year
(12
months
after
core
installation).
provided
new
insights
into
dynamics
traits
will
help
improve
accuracy
flow
estimation
forests
soils
Latvia.
