Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Ноя. 6, 2023
Abstract
During
the
coal
mining
operation,
accumulated
soil
in
gangue
hills
often
suffers
from
nutrient
deficiencies,
which
can
be
overcome
using
fertilizer
supplementation.
The
supplementation
of
exogenous
nutrients
has
proven
to
an
effective
means
enhancing
physicochemical
conditions
these
soils
and
promoting
vegetation
reestablishment.
This
study
aimed
investigate
characteristics
plant
growth
properties
restoration
a
hill,
focusing
on
artificially
seeded
grasslands
high-altitude
area
as
research
subject.
Over
period
three
consecutive
years,
varying
gradients
nitrogen
phosphorus
supplements
were
applied
hill.
Furthermore,
interrelationships
between
plants
factors
at
different
dosages
chemical
fertilization
analyzed
so
determine
appropriate
level
conducive
ecological
system's
area.
results
this
revealed
significant
responses
(
P
<
0.05)
height,
coverage,
biomass
dosage,
leading
increase
availability
0.05).
Apart
moss
dosage
exhibited
positive
correlation
with
various
characteristics,
well
highly
availability.
Notably,
no
differences
>
observed
physical
amendments.
In
conclusion,
is
beneficial
for
improving
areas
hills.
recommended
minimum
40g/m²
urea
combination
30g/m²
diammonium
phosphate.
supplement
should
continuously.
Considering
capacity
area's
ecosystem
self-repair
costs
restoration,
it
advisable
utilize
organic
fertilizers
sheep
manure
next
phase
restoration.
Forests,
Год журнала:
2025,
Номер
16(4), С. 699 - 699
Опубликована: Апрель 18, 2025
Severe
soil
erosion
and
land
productivity
degradation
caused
by
inadequate
vegetation
cover
pose
significant
challenges
to
regional
ecological
protection
sustainable
development.
To
assess
changes
variations
in
quality,
three
sample
areas
with
different
distinct
texture
characteristics
were
selected
from
the
Pisha
sandstone
region
located
northeastern
of
Loess
Plateau.
The
total
data
set
(TDS)
was
determined
through
sampling
experiments,
minimum
(MDS)
established
using
principal
component
analysis.
A
Random
Forest
(RF)
machine
learning
model
applied
predict
quality
distribution.
prediction
indices
derived
analysis
dimensions,
mean
weight
diameter
measured
via
wet
sieving,
enrichment
ratio
obtained
slope
experiments
conducted
at
corresponding
points.
During
RF
modeling
process,
80%
index
(SQI),
calculated
TDS
MDS
evaluation
methods,
allocated
for
training.
results
indicated
that
pH,
ammonia
nitrogen,
bulk
density,
silt
content,
clay
water
hygroscopic
phosphorus,
soluble
calcium,
actinomycetes
identified
as
optimal
predictors
SQI.
Furthermore,
demonstrated
superior
performance
predicting
distribution
SQI,
metrics
including
(R2
=
0.76–0.78,
RMSE
0.03–0.06,
MAE
0.04–0.09).
This
study
confirms
reliability
simulating
SQI
within
area
highlights
that,
regions
undergoing
extensive
restoration
limited
conditions,
experimental
measurements
particles
sediment
parameters
provide
an
effective
approach
evaluating
Land,
Год журнала:
2024,
Номер
13(4), С. 445 - 445
Опубликована: Март 31, 2024
The
hydrological
characteristics
of
gravel-containing
soils
are
different
from
those
gravel-free
soils,
so
it
is
worth
further
understanding
and
enriching
the
theory
soil
water
conservation.
In
this
study,
adjustable
slope
(10°,
20°,
30°)
test
boxes
with
surface
gravel
contents
(0%,
25%,
50%,
75%,
100%)
were
prepared
to
study
runoff
erosion
gravel-covered
land
slopes
under
rainfall
conditions
(10
mm/h,
20
30
mm/h).
Compared
bare
soil,
start
time
three
covered
100%
content
delayed
by
38.90,
32.83
73.39%,
producing
rate
condition
decreased
7.20–71.52%
total
amount
sediment
yield
7.94~84.57%.
Surface
cover
can
effectively
reduce
yield,
which
beneficial
for
better
results
have
a
certain
reference
value
conservation
be
used
as
basis
guiding
efficient
agricultural
production
in
gravel-mulched
construction
(like
road
improvement).
Sustainability,
Год журнала:
2024,
Номер
16(17), С. 7843 - 7843
Опубликована: Сен. 9, 2024
Red-soil
sloping
farmland
in
southern
China
plays
a
crucial
role
the
local
economy
and
food
production.
However,
improper
tillage
practices
have
resulted
topsoil
degradation
deteriorating
soil
quality.
This
study
investigated
changes
physico-chemical
properties
under
four
methods—cross-slope
ridge
(RT),
down-slope
(DT),
plastic
mulching
(PM),
conventional
(CT)—on
red-soil
farmland.
The
applied
Soil
Management
Assessment
Framework
(SMAF)
to
assess
influence
of
these
on
Results
indicated
that
PM
can
increase
total
porosity
soil,
reduce
bulk
density,
simultaneously
decrease
surface-water
evaporation,
significantly
improving
soil’s
water-retention
capacity.
RT
improved
aggregate
formation
stability,
leading
increased
macro-aggregate
content,
mean
weight
diameter,
water-stable
stability
rates.
effectively
preserved
nutrients
like
nitrogen
organic
matter,
although
lowered
pH,
potentially
causing
acidification.
demonstrated
highest
quality,
with
following.
Crop
growth
positively
impacted
content
showing
continuous
improvement
structure
quality
(p
<
0.05).
Priority
should
be
given
farmland,
followed
by
CT,
while
avoiding
DT
if
possible.
research
furnishes
valuable
scientific
substantiation
for
selection
optimal
preservation
slopes.
