Water,
Journal Year:
2024,
Volume and Issue:
16(18), P. 2671 - 2671
Published: Sept. 19, 2024
While
previous
studies
have
suggested
that
biochar,
nitrification
inhibitors,
and
urease
inhibitors
may
reduce
soil
greenhouse
gas
emissions,
their
effectiveness
in
soils
irrigated
with
alternative
water
resources
remains
unclear.
To
compensate
for
this,
reclaimed
livestock
wastewater
were
utilized
as
alongside
groundwater
control.
Nitrapyrin
N-(n-butyl)
thiophosphoric
triamide
biochar
applied
to
the
either
individually
or
combination,
a
no-substance
treatment
(NS)
was
included
comparison.
The
results
revealed
irrigation
exacerbated
global
warming
potential.
Compared
NS,
all
exogenous
substance
treatments
suppressed
nitrous
oxide
(N2O)
emissions
while
increasing
carbon
dioxide
(CO2)
affecting
methane
(CH4)
varied
across
irrespective
of
types.
Interestingly,
additional
reduced
inhibitory
effect
on
effect.
Using
potential
by
48.3%
50.1%
under
irrigation,
respectively.
However,
when
combination
increased
52.1–83.4%
compared
alone,
similar
trend
also
observed
scenario
increases
ranging
from
8.8
35.1%.
Therefore,
combined
application
should
be
approached
cautiously,
considering
emissions.
Geoderma,
Journal Year:
2023,
Volume and Issue:
435, P. 116498 - 116498
Published: May 10, 2023
Biochar
application
to
soil
has
been
proposed
as
a
promising
tool
for
sequestering
carbon,
ensuring
food
security,
mitigating
greenhouse
gases
(GHGs),
and
lowering
nitrous
oxide
(N2O)
nitric
(NO)
emissions.
Efforts
observations
determine
whether
biochar
can
be
repeatedly
amended
further
sequester
carbon
while
meeting
those
targets
from
long
term
practical
perspective
are
limited.
A
three-year
field
experiment
was
conducted
observe
simultaneous
methane
(CH4),
N2O,
NO
emissions
in
rice–wheat
rotation
system,
where
six
treatments
were
established
follows:
control
plot
without
(B0),
biochar-enriched
with
applied
once
2012
at
20
t
ha−1
(B20−)
40
(B40−),
reapplication
of
half
rate
2015
10
(B20+)
(B40+)
the
above
described
soils,
single
(B40).
Then
series
incubation
experiments
explored
mechanism
trace
gases.
The
results
showed
that
compared
nonamended
soils
had
similar
effects
on
CH4,
emissions,
significantly
decreasing
them
by
14.5%–27.1%,
31.5%–43.4%,
22.4%–33.6%,
respectively,
when
non-amended
soils.
decrease
CH4
largely
due
production
increase
oxidation
treatments.
decreased
yield-scaled
GHGs
an
average
31.5%
N-oxides
41.0%.
Nonetheless,
effectiveness
did
not
two
different
rates.
Both
reapplied
appeared
practices
mitigate
GHG
N-oxide
system.
sequestration
hindering
improvements
crop
yield
or
mitigation
other
N-oxides.
Ecological Indicators,
Journal Year:
2023,
Volume and Issue:
154, P. 110659 - 110659
Published: July 17, 2023
Coastal
interface
is
the
most
active
in
global
element
cycling,
linking
terrestrial
and
ocean
ecosystem.
However,
little
attention
paid
to
ecological
risk
of
multiple
heavy
metals
(HMs)
residues
tropical
coastal
soil
its
relationships
with
human
activities.
Here,
199
topsoils
were
collected
from
eastern
Hainan
Island
China
2021.
Furthermore,
pollution
characteristics,
spatial
distribution,
eight
HMs
evaluated.
The
results
showed
that
mean
contents
order
Cr
(47.96
mg·kg−1)
>
Zn
(40.93
Pb
(21.28
Cu
(14.89
Ni
(8.67
As
(5.64
Cd
(0.06
Hg
(0.05
mg·kg−1).
These
larger
than
background
values
Province,
indicating
accumulation
risk.
Based
on
Nemerow
integrated
index,
sample
sites
moderate
severe
accounted
for
28.5%
28.0%,
respectively.
In
contrast,
sum
no
slight
was
only
10%.
assessment
revealed
25%
5%
displayed
or
extreme
risks
RI
value
90,
dangerous
HMs.
Spatially,
hotspots
Zn,
Pb,
distributed
middle
urban
study
area
dense
road
network
west,
while
Cr,
Ni,
woodland
northeast
southwest.
cropland.
PMF
model
further
indicated
largest
contributor
combined
sources
traffic
agricultural
activities,
accounting
55.66%,
56.30%,
55.36%,
Soil
parent
materials
contributed
Cu,
77.1%,
58.4%,
38.2%,
Coal
combustion
main
source
Hg,
81.3%,
activities
80.8%
soils.
Overall,
anthropogenic
(63.60%)
studied
soils,
but
contribution
(36.40%)
could
not
be
neglected.
Land,
Journal Year:
2023,
Volume and Issue:
12(3), P. 662 - 662
Published: March 11, 2023
Global
warming
has
driven
the
expansion
of
cultivated
land
to
high-altitude
areas.
Intensive
vegetable
production,
which
is
generally
considered
be
a
high
economic
value
and
environmental
risk
system,
expanded
greatly
in
mountainous
areas
China.
However,
cost
production
these
poorly
understood.
In
this
study,
pepper
at
low
(traditional
area)
(newly
altitudes
were
investigated
Shizhu,
typical
crop
area.
The
output
two
identified.
influence
resource
inputs,
climate,
soil
properties
on
was
evaluated.
There
obvious
differences
between
altitudes.
High-altitude
achieved
16.2%
lower
yield,
had
higher
fertilizer
input,
resulting
22.3%
net
ecosystem
benefit
(NEEB),
23.0%
nitrogen
(N)
footprint
24.0%
carbon
(C)
compared
low-altitude
farming.
potential
for
mitigation
with
both
high-
production;
Compared
average
farmers,
high-yield
farmers
groups
reduced
their
N
C
footprints
by
16.9–24.8%
18.3–25.2%,
respectively,
30.6–34.1%
yield.
A
large
increase
yield
could
also
increasing
top-dress
rate
decreasing
plant
density.
Importantly,
despite
less
advanced
technology
inferior
conditions
(e.g.,
poor
road
system
uneven
fields).
It
provides
reference
study
other
regions
or
systems
