Hydrological Processes,
Год журнала:
2023,
Номер
37(2)
Опубликована: Янв. 24, 2023
Abstract
Phosphorus
(P)
loss
via
runoff
will
reduce
soil
fertility
and
cause
water
eutrophication.
Although
P
is
lost
as
both
particulate
phosphorus
(PP)
soluble
(SP),
the
existing
transport
models
for
landscapes
rarely
consider
PP
its
exchange
with
surface
runoff.
We
developed
an
integrated
model
which
coupled
SP
mechanisms
based
on
Rose–Gao
assessed
it
laboratory
experiments.
also
introduced
a
temporal
varying
partition
coefficient
K
d
into
to
reveal
impacts
of
rapid
changes
in
environment
adsorption
desorption.
Experiments
using
kaolinite
mixed
montmorillonite
were
conducted
under
artificial
rainfall
events.
The
results
show
that
simulates
concentrations
eroded
sediment,
SP,
runoff,
good
agreement
measured
values
(all
R
2
>
0.88).
Kaolinite
had
larger
sediment
than
soil.
In
addition,
compared
no
(Gao
model)
constant
model,
our
provided
simulation
most
closely
matched
experimental
data.
Considering
influence
dynamic
partitioning
between
surface,
can
provide
effective
tool
dynamics
Reviews of Geophysics,
Год журнала:
2023,
Номер
61(4)
Опубликована: Дек. 1, 2023
Abstract
River
damming
has
brought
great
benefits
to
flood
mitigation,
energy
and
food
production,
will
continue
play
a
significant
role
in
global
supply,
particularly
Asia,
Africa,
South
America.
However,
dams
have
extensively
altered
river
dynamics,
including
riverine
connectivity,
hydrological,
thermal,
sediment
solute
regimes,
the
channel
morphology.
These
alterations
detrimental
effects
on
quality
quantity
of
fish
habitat
associated
impacts
aquatic
life.
Indeed,
been
implicated
decline
numerous
fishes,
emphasizing
need
for
effective
conservation
measures.
Here,
we
present
synthesis
critical
issues
concerning
physical
habitats,
with
particular
focus
key
species
across
continents.
We
also
consider
current
measures
their
applicability
different
contexts.
Finally,
identify
future
research
needs.
The
information
presented
herein
help
support
sustainable
dam
operation
under
constraints
climate
change
human
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(16), С. 7032 - 7044
Опубликована: Апрель 11, 2024
High-elevation
mountains
have
experienced
disproportionately
rapid
warming,
yet
the
effect
of
warming
on
lateral
export
terrestrial
carbon
to
rivers
remains
poorly
explored
and
understood
in
these
regions.
Here,
we
present
a
long-term
data
set
dissolved
inorganic
(DIC)
more
detailed,
short-term
DIC,
δ13CDIC,
organic
from
two
major
Qinghai–Tibetan
Plateau,
Jinsha
River
(JSR)
Yalong
(YLR).
In
higher-elevation
JSR
with
∼51%
continuous
permafrost
coverage,
(>3
°C)
increasing
precipitation
coincided
substantially
increased
DIC
concentrations
by
35%
fluxes
110%.
lower-elevation
YLR
∼14%
permafrost,
such
increases
did
not
occur
despite
comparable
extent
warming.
Riverine
particulate
discharge
(mobilization)
both
rivers.
JSR,
transitioned
dilution
(decreasing
concentration
discharge)
earlier,
colder
years
chemostasis
(relatively
constant
concentration)
later,
warmer
years.
This
changing
pattern,
together
lighter
δ13CDIC
under
high
discharge,
suggests
that
thawing
boosts
production
via
enhancing
soil
respiration
weathering.
These
findings
reveal
predominant
role
altering
escalating
modifying
patterns.
Ecological Indicators,
Год журнала:
2024,
Номер
166, С. 112511 - 112511
Опубликована: Авг. 20, 2024
Based
on
the
focus
role
of
reservoirs
as
carbon
sources
and
sinks,
this
article
explores
their
impact
global
cycle.
Reservoirs,
which
are
"artificial
lakes"
created
by
human
activities
in
rivers,
reviewed
terms
key
links
cycling
within
reservoir
areas,
influencing
factors,
research
methods
related
to
emissions.
By
reviewing
literature
cycling,
we
elucidate
mechanisms
inputs,
decomposition
transformation,
emissions,
burial,
summarizing
biogeochemical
coupling
processes
dissolved
organic
(DOC),
inorganic
(DIC),
particulate
(POC),
(PIC)
with
hydrological
conditions
nutrients.
The
study
concludes
that
process
is
influenced
characteristics
themselves,
hydrodynamic
conditions,
physicochemical
nutrient
activities.
Additionally,
further
clarify
applications
field
sampling
analysis,
modeling,
remote
sensing
technology,
isotope
techniques
cycling.
In
future,
it
recommended
continue
monitoring
simulating
cycle
a
long-term
large-scale
basis,
deeply
explore
multifactorial
construction
Water,
Год журнала:
2023,
Номер
15(19), С. 3429 - 3429
Опубликована: Сен. 29, 2023
Suspended
particulate
matter
(SPM)
plays
a
crucial
role
in
biogeochemical
cycles
the
aquatic
environment
because
of
its
ubiquitous
presence,
mobility,
and
physicochemical
properties.
This
work
gathered
summarized
published
information
about
SPM
Yangtze
River
system,
including
source,
distribution,
environmental
effects.
Results
indicated
that
concentration
was
high
flood
period
low
dry
period.
Compared
to
midstream
downstream,
lowest
upstream
system.
Furthermore,
level
influenced
by
human
activities,
such
as
shipping,
dredging,
construction
water
conservancy
projects,
industrial/agricultural
emissions,
well
natural
conditions,
wind,
rainfall,
phytoplankton.
Moreover,
would
impact
element
cycle
environment,
N,
P,
heavy
metal,
persistent
organic
pollutants.
In
addition,
adsorbed
these
elemental
ions
or
particles
on
surface.
Still,
this
adsorption
usually
unstable,
when
properties
itself
external
conditions
changed,
elements
be
released
into
surrounding
body.
With
flow
water,
migrated
downstream
with
river.
Thus,
reveals
current
status
which
provides
an
essential
reference
for
further
research
