Forests,
Год журнала:
2024,
Номер
15(8), С. 1376 - 1376
Опубликована: Авг. 6, 2024
Not
enough
research
has
been
conducted
on
the
mechanisms
influencing
stability
of
soil
aggregates
in
coastal
saline–alkaline
and
dynamic
changes
succession
process
brought
by
longer
planting
times.
In
this
study,
aggregate
composition,
stability,
factors
0–20
cm,
20–40
40–60
cm
layers
different
time
stages
were
analyzed
reclaimed
land
at
initial
stage
afforestation
Taxodium
hybrid
‘Zhongshanshan’
plantation
with
times
6,
10,
17,
21
years.
The
results
show
that,
increase
time,
increased
significantly.
layer,
geometric
mean
diameter
(GMD)
size
>0.25
mm
(R0.25)
81.15%
89.80%,
respectively,
when
was
years,
compared
land.
structural
equation
(SEM)
showed
that
had
a
direct
positive
effect
(path
coefficient
0.315)
stability.
However,
sucrase
(0.407)
β-glucosidase
(0.229)
indirectly
improved
affecting
organic
carbon.
summary,
establishment
plants
saline–alkali
is
beneficial
for
stabilizing
aggregates,
improving
structure,
boosting
quality.
Long-term
can
be
an
effective
measure
ecological
restoration
region.
Organic-inorganic
fertilizer
combination
plays
a
vital
role
in
improving
soil
quality
and
decreasing
dependency
on
mineral
fertilizers.
However,
existing
research
predominantly
focuses
short-term
effects,
leaving
the
mechanisms
of
long-term
impacts
substituting
chemical
nitrogen
with
straw
organic
fertilizers
fluvo-aquic
remains
unclear,
particularly
regarding
contributions
biological
abiotic
quality.
This
study
systematically
investigates
changes
physicochemical
properties,
aggregates,
enzyme
activity,
functional
microbial
community
(bacteria
fungi),
their
interrelationships
33-year
field
experiment
soils.
The
results
indicate
that
30%
significantly
improved
nutrient
status
including
increased
carbon
content
(by
13.2–32.5%)
and,
total
nitrogen,
effective
phosphorus,
available
potassium,
which
by
25.8–42.0%,
20.1–245%,
40.9–71.3%,
respectively.
substitution
also
structure,
promoting
proportion
large
small
macro-aggregates
(>2mm,
2–0.25mm)
(increased
2.10–4.21%
4.94–7.59%,
respectively),
while
reducing
micro-aggregates
(<0.25mm)
16.4–16.8%,
enhancing
aggregate
stability
9.27–10.8%).
Additionally,
this
stimulated
activities
C-,
N-,
P-related
enzymes,
increases
23.5–36.5%,
15.4–37.4%,
34.5–36.7%,
Furthermore,
inorganic
application
amplifies
relative
abundance
microorganisms
(e.g.
related
to
ammonia
oxidation
(MND1,
6.98–9.22%),
de-nitrification
(Sphingomonas,
6.63–7.81%),
P
mineralization
(unclassified_Gemmatimonadaceae,
9.36–10.82%;
Mortierella,
4.04%–12.23%)),
leading
12.6–56.9%),
N
use
efficiency
(NUE:
4.11–11.8%;
PUE:
3.32–22.6%),
crop
yields
(4.21–12.7%).
Moreover,
instead
incorporation
produces
more
favorable
outcomes,
exerts
substantial
influence
bacterial
communities
than
fungi,
consequently
making
greater
contribution
productivity.
These
findings
enrich
our
comprehension
through
integrated
fertilizers,
thereby
intensive
sustainable
agricultural
practices.
Forests,
Год журнала:
2024,
Номер
15(8), С. 1376 - 1376
Опубликована: Авг. 6, 2024
Not
enough
research
has
been
conducted
on
the
mechanisms
influencing
stability
of
soil
aggregates
in
coastal
saline–alkaline
and
dynamic
changes
succession
process
brought
by
longer
planting
times.
In
this
study,
aggregate
composition,
stability,
factors
0–20
cm,
20–40
40–60
cm
layers
different
time
stages
were
analyzed
reclaimed
land
at
initial
stage
afforestation
Taxodium
hybrid
‘Zhongshanshan’
plantation
with
times
6,
10,
17,
21
years.
The
results
show
that,
increase
time,
increased
significantly.
layer,
geometric
mean
diameter
(GMD)
size
>0.25
mm
(R0.25)
81.15%
89.80%,
respectively,
when
was
years,
compared
land.
structural
equation
(SEM)
showed
that
had
a
direct
positive
effect
(path
coefficient
0.315)
stability.
However,
sucrase
(0.407)
β-glucosidase
(0.229)
indirectly
improved
affecting
organic
carbon.
summary,
establishment
plants
saline–alkali
is
beneficial
for
stabilizing
aggregates,
improving
structure,
boosting
quality.
Long-term
can
be
an
effective
measure
ecological
restoration
region.
