Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 6, 2025
AbstractBackground
and
Aims:
Highly
weathered
tropical
forests
are
widely
recognized
as
nitrogen
(N)-rich
phosphorus
(P)-poor,
the
input
of
nutrienteffects
soil
carbon
(C)
cycling
storage
in
these
ecosystems.
In
topsoil,
short-term
nutrient
additionmay
not
only
effect
organic
C
(SOC)
pools
directly,
but
also
impact
conversion
process
indirectly
through
altering
microbial
use
efficiency
(CUE).
However,
effects
addition
on
accumulation
mechanisms
remain
unclear.
The
aim
this
study
was
to
clarify
SOC
responding
addition.
Methods:
This
conducted
a
one-year
N
P
additions
experiment
forest
Hainan,
China.
SOC,
fractions
(POC
MAOC),
biomass,
enzyme
activities,
physicochemical
properties
at
depths
0–10
cm,
10–20
cm
20–40
were
measured.
Results:
results
showed
that
increased
(8.91–20.03%),
POC
(6.65–24.90%),
MAOC
(8.74–19.89%)
topsoil
(0–10
cm),
whereas
no
significant
changes
occurred
subsoil
(20–40
cm).
Pearson’s
correlation
analysis
revealed
litter
biomass
CUE
significantly
positively
correlated
with
SOC.
partial
least
squares-path
model
influences
by
characteristics.
Conclusions:These
suggested
decreased
activities.
Such
information
could
provide
insight
understand
pool
forest.
