Lomonosov Geography Journal,
Journal Year:
2024,
Volume and Issue:
79(№6, 2024), P. 116 - 128
Published: Jan. 1, 2024
The
paper
considers
the
features
of
spatial
distribution
litter
layers
and
humus
horizons
soils
in
a
forested
area.
object
study
was
forest-cultural
landscapes
on
low-productive
sandy
lands
created
early
twentieth
century
to
protect
against
deflation.
territory
is
located
Kamyshin
district
Volgograd
region
(cadastral
quarter
No
34:36:000014).
purpose
research
determine
depth
organogenic
relation
species
composition
plantations
(coniferous
or
deciduous
species),
total
projective
cover
herbage
its
dominant
associations.
topical
aimed
at
evaluating
effectiveness
forest
reclamation
measures
dry-steppe
zone.
Both
terrestrial
(soil
geobotanical)
remote
(agroforestry
much
territory.
sands
were
stabilized
due
creation
massive
plantings
grass
formation.
relationship
between
stand,
cover,
herbaceous
association
coniferous
has
been
found.
studied
increases
if
hardwoods
are
admixed
which
produce
leaf
litter.
heterogeneity
indicators
for
all
sites
primarily
influenced
by
low
rate
decomposition,
as
well
internal
re-deposition
matter
wind.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(49), P. 20871 - 20880
Published: Nov. 29, 2023
Organic
acid
is
prevalent
in
underground
environments
and,
against
the
backdrop
of
biogeochemical
cycles
on
Earth,
holds
significant
importance
degradation
contaminants
by
redox-active
minerals.
While
earlier
studies
role
organic
generation
reactive
oxygen
species
(ROS)
primarily
concentrated
electron
shuttle
or
ligand
effects,
this
study
delves
into
combined
impacts
decomposition
and
Mackinawite
(FeS)
oxidation
contaminant
transformation
under
dark
aerobic
conditions.
Using
bisphenol
A
(BPA)
as
a
model,
our
findings
showed
that
oxalic
(OA)
notably
outperforms
other
acids
enhancing
BPA
removal,
attaining
rate
constant
0.69
h-1.
Mass
spectrometry
characterizations,
coupled
with
anaerobic
treatments,
advocate
for
molecule-O2
activation
principal
mechanism
behind
pollutant
transformation.
Comprehensive
results
unveiled
carbon
center
radicals,
initiated
hydroxyl
radical
(•OH)
attack,
serve
primary
agents
oxidation,
accounting
at
least
93.6%
total
•OH
generation.
This
dynamic,
driven
concurrent
formation
carbon-centered
ensures
steady
supply
electrons
ROS
The
obtained
information
highlights
OA
natural
attenuation
pollutants
offers
innovative
strategies
FeS
acid-coupled
decontamination.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(16), P. 7066 - 7077
Published: April 10, 2024
Reactive
oxygen
species
(ROS)
are
ubiquitous
in
the
natural
environment
and
play
a
pivotal
role
biogeochemical
processes.
However,
spatiotemporal
distribution
production
mechanisms
of
ROS
riparian
soil
remain
unknown.
Herein,
we
performed
uninterrupted
monitoring
to
investigate
variation
at
different
sites
Weihe
River
zone
throughout
year.
Fluorescence
imaging
quantitative
analysis
clearly
showed
soils.
The
concentration
superoxide
(O
Carbon Research,
Journal Year:
2024,
Volume and Issue:
3(1)
Published: April 22, 2024
Abstract
Persistent
free
radicals
(PFRs)
are
emerging
substances
with
diverse
impacts
in
biochar
applications,
necessitating
accurate
prediction
of
their
content
and
types
prior
to
optimal
use
minimal
adverse
effects.
This
task
is
challenging
due
the
nonlinearity
intricate
variable
relationships
biochar.
Herein,
we
employed
data-driven
techniques
compile
a
dataset
from
peer-reviewed
publications,
aiming
systematically
predict
PFRs
by
developing
supervised
machine
learning
models.
Notably,
extreme
gradient
boosting
(XGBoost)
model
exhibited
best
predictive
performance
for
both
regression
classification
tasks
predicting
PFRs,
achieving
test
R
2
value
0.95
PFR
prediction,
along
an
Area
Under
Receiver
Operating
Curve
(AUROC)
0.92
type
respectively.
Based
on
XGBoost
model,
graphical
user
interface
(GUI)
was
developed
access
predictions.
Analysis
feature
importance
revealed
that
properties,
such
as
metal/non-metal
doping,
pyrolysis
temperature,
carbon
content,
specific
surface
area
were
identified
four
most
significant
factors
influencing
contents.
Regarding
biochar,
area,
feedstock
top-ranked
factors.
These
findings
provide
valuable
guidance
accurately
contents
also
hold
potential
highly
efficient
utilization
across
various
applications.
Graphical
Agronomy,
Journal Year:
2024,
Volume and Issue:
14(9), P. 1951 - 1951
Published: Aug. 29, 2024
Abiotic
humification,
dominated
by
catalytic
oxidation,
is
one
of
the
critical
mechanisms
for
organic
carbon
preservation
in
nature.
However,
effects
biochar
catalysis
on
abiotic
humification
have
not
yet
been
elucidated.
This
study
investigated
power
from
walnut
shells
at
different
temperatures
(300
°C,
600
and
900
°C)
transformation
hydroquinone
(HQ)
as
a
representative
polyphenol.
All
samples
catalyzed
HQ
polymerization,
resulting
formation
humic
polymers
such
fulvic
acids
(FAs)
(HAs).
Light
oxygen
promoted
HA
formation.
HO•
was
detected
BC600–HQ
reaction
system,
quenching
resulted
41.22%
decrease
production,
indicating
that
plays
major
role
oxidative
polymerization.
In
proposed
pathway
active
sites
generated
reactive
species
accept
an
electron
HQ,
oxidation
to
(semi)quinone
radicals,
which
subsequently
undergo
cleavage
or
coupling
form
oligomerized
products.
Under
BC600
catalysis,
weight-average
molecular
weight
(Mw)
products
glucose,
glycine
reached
14,449
Da.
These
findings
provide
new
insights
into
application
potential
promoting
soil
sequestration.
