Ecological Indicators,
Год журнала:
2023,
Номер
150, С. 110224 - 110224
Опубликована: Апрель 13, 2023
Soil
microbes
are
among
the
most
complex
and
diverse
communities
on
Earth,
actively
participating
in
biogeochemical
cycles
while
responding
positively
to
environmental
changes.
Saprophytic
fungi
important
factors
soil
carbon
cycle,
response
driving
grassland
forestland
farmland
conversion
desert
steppe
still
poorly
understood.
Therefore,
we
analyzed
microbial
community
structure
saprophytic
fungal
grasslands,
shrub
lands,
farmlands
typical
areas
of
northwest
China.
It
was
found
that
cultivation
plants/crops
increased
proportion
silt
aggregates
decreasing
salinity
increasing
total
carbon,
nitrogen,
organic
matter
content.
Proteobacteria,
Actinobacteriota
Ascomycota
were
dominant
phyla
soils,
with
Gemmatimonadota
Mucoromycota
more
responsive
environment
The
co-occurrence
network
relationship
further
characterized
process
niche
sharing/competition
between
bacteria
fungi.
complexity
deepened
by
land
use,
occupied
planting
than
maize
planting.
Network
relationships
fungi,
use
network,
occupying
ecological
niches
cultivation.
In
addition,
main
functional
bacterial-fungal
networks
influenced
properties.
Random
forest
analysis
explained
importance
changes
steppes.
enrichment
had
an
obvious
correlation
aggregate
stability,
physical
properties,
nutrients,
especially
background
forestation
This
study
highlights
afforestation
as
one
ways
benefit
management
steppes,
emphasizing
ecosystem
indicators.
Soil Biology and Biochemistry,
Год журнала:
2024,
Номер
190, С. 109323 - 109323
Опубликована: Янв. 19, 2024
Microbial
necromass
carbon
(C)
can
substantially
contribute
to
stabilized
soil
organic
matter
(SOM),
and
effective
management
of
this
C
may
help
mitigate
climate
change.
However,
factors
important
the
formation
microbial
are
only
partly
understood.
While
bioavailable
plant
inputs
induce
by
boosting
growth
use
efficiency,
other
traits,
such
as
those
related
secretion
systems
or
adhesion
motility,
also
be
relevant.
These
traits
independent
bioavailability
modulated
environmental
depth
site
age.
Such
links,
however,
have
hardly
been
studied.
Here,
we
used
replicated
plots
European
alder
(more
inputs)
Scots
pine
(less
investigate
links
among
inputs,
depth,
age,
community
composition,
in
SOM,
i.e.,
particulate
occluded
within
aggregates
(oPOM)
mineral-associated
(MAOM).
We
did
not
find
evidence
that
nor
were
major
drivers
formation.
Instead,
certain
taxa,
diversity
particular,
most
tightly
MAOM.
contributed
oPOM
(up
∼57%
stored
fraction),
a
pool
considered
largely
derive
from
biomolecules.
Combined,
MAOM
accounted
for
∼23%
bulk
contents.
Our
results
imply
C-focused
research
consider
constraints
on
composition
diversity,
pools
than
MAOM,
plant-derived
SOM.
Sustainability,
Год журнала:
2025,
Номер
17(1), С. 308 - 308
Опубликована: Янв. 3, 2025
Reasonably
using
reclaimed
water
(RW)
for
irrigation
can
help
to
alleviate
scarcity,
while
also
providing
both
environmental
and
economic
benefits.
However,
there
is
limited
information
regarding
the
potential
impact
of
RW
on
nutrients
saline–alkali
soils
their
microbial
communities.
This
study
investigates
effects
soil
properties
communities
a
16S
rRNA
sequence
analysis.
The
results
show
that
pH
electrical
conductivity
(EC)
are
significantly
lower
in
treatment
(p
<
0.05).
Compared
was
not
irrigated
with
(CK),
EC
value
decreased
by
42.15–45.76%,
0–20
cm
40–60
depth.
exhibited
significant
increase
abundance
Actinobacteria
(32.32–33.42%),
Chloroflexi
(7.63–15.79%),
Firmicutes
(9.27–10.42%),
Ascomycota
(89.85–95.95%).
Bacterial
richness
diversity
were
enhanced
after
At
genus
level,
dominant
bacterial
genera
included
Bacillus,
Penicillium,
Aspergillus,
Talaromyces.
Differences
community
observed
between
two
treatments
among
depths
within
each
A
network
analysis
indicated
internal
relationships
become
more
complex
following
irrigation,
whereas
connections
fungal
tend
simplified.
redundancy
(RDA)
showed
directly
influenced
EC,
total
nitrogen
(TN),
available
potassium
(AK).
Partial
least
squares
path
modeling
(PLS-PM)
salinity
most
factors
influencing
structure.
Together,
these
indicate
has
positive
ameliorating
enhancing
soils.
These
findings
provide
valuable
insights
future
agricultural
utilization
land.
