Journal of Geophysical Research Biogeosciences,
Journal Year:
2024,
Volume and Issue:
129(11)
Published: Oct. 30, 2024
Abstract
The
fate
of
organic
carbon
(OC)
in
most
river‐dominated
ocean
margins
(RiOMars)
has
undergone
a
noticeable
transformation
with
the
increased
sediment
retention
engineering
watersheds.
In
East
China
Sea
(ECS),
and
influence
bulk
OC
have
been
broadly
studied.
However,
response
different
mechanisms
protection
under
not
investigated,
hindering
our
understanding
factors
that
control
deposition.
this
study,
we
isolated
fractions,
analyzed
basic
parameters
sediments,
compared
previous
study's
data
to
reveal
how
deposition
responded
transformation.
Our
research
indicates
leads
reduction
associated
minerals
sorting
occluded
by
plant
debris
resulting
decomposition
mineralization
OC.
affects
mechanism
binding
reactive
iron
(Fe
R
),
increasing
Fe
‐protected
content.
Still,
co‐precipitation
intense
redox
environment
mud
deposit
decrease
stability.
Taken
together,
impact
is
increase
risk
weaken
preservation
ability
RiOMars
as
sinks.
This
study
implications
for
passive
subject
watersheds
worldwide
deserves
more
attention.
