Land,
Journal Year:
2025,
Volume and Issue:
14(2), P. 409 - 409
Published: Feb. 16, 2025
Soil
organic
carbon
(SOC)
and
soil
inorganic
(SIC)
are
key
components
of
pools
in
arid
ecosystems,
playing
a
crucial
role
regional
cycling
climate
change
mitigation.
However,
the
interactions
between
these
two
forms
alpine
ecosystems
remain
underexplored.
This
study
was
conducted
Heihe
River
Basin
(HRB)
northeastern
Qinghai–Tibet
Plateau,
focusing
on
distribution
dynamics
SOC
SIC
deep
layers.
Using
data
from
329
samples
collected
49
profiles
extending
to
bedrock,
combined
with
path
analysis,
we
explored
inter-relationships
quantified
influence
environmental
factors.
The
results
showed
that
(1)
exhibited
unimodal
elevation,
peaking
at
3300–3600
m,
while
continuously
decreased
reduction
rates
ranging
−0.39%
−31.18%;
(2)
were
significantly
positively
correlated
(r
=
0.55,
p
<
0.01),
decreasing
depth
showing
an
inflection
point
50
cm
depth;
(3)
primarily
driven
by
nutrient
factors,
such
as
total
nitrogen
(TN),
coefficient
0.988,
influenced
abiotic
including
potential
evapotranspiration
(PET),
−1.987;
(4)
density
accounted
for
81.62%
pool,
dominant
storage,
whereas
dynamic
changes,
particularly
depths
110–150
cm.
These
findings
advance
our
understanding
provide
critical
improving
management
strategies
similar
regions.
Functional Ecology,
Journal Year:
2024,
Volume and Issue:
38(5), P. 1210 - 1221
Published: March 16, 2024
Abstract
The
relationship
between
biodiversity
and
ecosystem
functioning
has
mainly
focused
on
plant
communities,
with
comparably
little
known
about
soil
microbial‐driven
functions.
Climate
change
severely
threatens
microbial
roles,
but
how
communities
determine
multifunctionality
under
climate
is
poorly
understood.
Here,
we
evaluated
the
effects
of
diverse
bacterial
fungal
properties,
including
gene
abundance,
diversity
network
complexity,
(nine
functions)
across
a
3000
km
transect
along
natural
precipitation
gradient
in
Tibetan
alpine
grasslands.
Variation
partitioning
analyses
were
performed
to
disentangle
relative
importance
properties
variation
multifunctionality.
Moreover,
structural
equation
modelling
was
adopted
explore
influencing
pathways
precipitation‐induced
changes
edaphic
factors
and,
consequently,
Soil
positively
associated
complexity.
Microbial
abundance
more
important
driver
than
In
addition,
determined
by
pH.
Meanwhile,
much
larger
those
fungi.
closely
different
(cellulolysis,
ligninolysis,
nitrogen
reduction,
denitrification
nitrate
fixation
etc.)
(soil
saprotrophs,
arbuscular
mycorrhizal
pathogens
functional
guilds,
which
exert
vital
regulations
an
array
biogeochemical
cycling
processes.
Our
results
provide
large‐scale
evidence
contribution
complexity
grasslands
changing
precipitation,
pivotal
for
understanding
roles
modulating
predicting
future
changes.
Read
free
Plain
Language
Summary
this
article
Journal
blog.
Agriculture,
Journal Year:
2025,
Volume and Issue:
15(3), P. 238 - 238
Published: Jan. 22, 2025
Carbon–nitrogen
(C-N)
coupling
is
a
fundamental
concept
in
ecosystem
ecology.
Long-term
excessive
fertilization
tea
plantations
has
caused
soil
C-N
imbalance,
leading
to
ecological
issues.
Understanding
under
nitrogen
loading
essential
for
sustainable
management,
yet
the
mechanisms
remain
unclear.
This
study
examined
plantation
soils
five
regimes:
no
fertilization,
chemical
fertilizer,
+
organic
cake
microbial
and
biochar.
Fertilization
mainly
increased
particulate
carbon
(POC)
inorganic
nitrogen,
driven
by
changes
bacterial
community
composition
function.
Mixed
treatments
enhanced
association
between
communities
properties,
increasing
complexity
without
altering
overall
trends.
Fungal
had
minor
influence
on
dynamics.
Microbial
necromass
(MNC)
pump
(MCP)
efficacy,
representing
long-term
storage
potential,
showed
minimal
responses
short-term
fertilization.
However,
accumulation
coefficient
(NAC)
was
nitrogen-sensitive,
indicating
responses.
PLS-PM
analysis
revealed
consistent
across
treatments,
where
influenced
through
enzyme
activity
MCP,
while
directly
affected
storage.
These
findings
provide
insights
precise
management
practices
climate
change.
BMC Plant Biology,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: Oct. 14, 2024
Arbuscular
mycorrhizal
fungi
(AMF)
have
profound
effects
on
plant
growth
and
nitrogen
(N)
phosphorus
(P)
nutrition.
However,
a
comprehensive
evaluation
of
how
N
P
respond
to
AMF
inoculation
is
still
unavailable.
Here,
we
complied
data
from
187
original
researches
carried
out
meta-analysis
assess
the
We
observe
overall
positive
performance.
The
mean
increases
biomass,
concentration,
uptake
whole
are
47%,
16%,
27%,
67%,
105%,
respectively.
induces
more
in
concentrations
storage
than
N.
Plant
responses
substantially
higher
with
single
species
mixed
species,
laboratory
experiments
field
experiments,
legumes
non-legumes.
response
ratios
nutrition
positively
correlated
colonization
rate,
addition,
water
condition,
while
unvaried
experiment
duration.
biggest
smallest
effect
sizes
performance
observed
application
nitrate
ammonium,
Accordingly,
this
study
clearly
suggests
that
improves
both
nutrients
systematically
clarifies
variation
patterns
various
biotic
abiotic
factors.
These
findings
highlight
important
role
enhancing
resource
acquisitions
provide
useful
references
for
evaluating
functions
under
future
global
changes.
