Plants,
Год журнала:
2023,
Номер
12(24), С. 4188 - 4188
Опубликована: Дек. 18, 2023
Purple
soils
are
greatly
representative
of
ecologically
fragile
in
southern
China,
yet
the
impact
vegetation
restoration
processes
on
nitrogen
(N)
availability
purple
soil
ecosystems
is
still
unclear.
In
this
study,
nutrient
content,
available
N
fractions
(including
microbial
biomass
(MBN),
ammonium
(NH4+-N),
nitrate
(NO3--N),
and
total
dissolved
(TDN)),
enzyme
activities
urease
(URE),
reductase
(NR),
nitrite
(NIR))
involved
mineralization
immobilization
were
investigated
across
three
vegetation-restoration
measures:
Camellia
oleifera
monoculture,
ryegrass
intercropping,
intercropping
with
weeds.
The
results
showed
that
monoculture
mode
considerably
enhanced
accumulation
modified
proportion
arable
land
situated
slopes,
compared
to
mode,
physical,
chemical,
microbiological
properties
demonstrated
more
pronounced
effects
due
measures.
However,
loss
faster
set-aside
crop
monocultures,
measures
beneficial
for
water
conservation
under
timely
fertilization
conditions.
URE,
NR,
NIR
MBN
content
model
significantly
higher
than
control
check
sample.
Soil
transformation
occurs
through
combined
influence
chemical
biological
processes.
relationships
between
enzymes
studied
contents
various
components
nutrients
effective
displayed
significant
differences.
Notably,
URE
had
a
highly
positive
correlation
TOC.
There
strong
NR
TN,
TDN,
NO3--N,
NH4+-N.
Our
findings
suggest
improved
its
soils,
making
an
essential
contribution
sustainability
ecosystem
functions.
Frontiers in Microbiology,
Год журнала:
2025,
Номер
16
Опубликована: Март 14, 2025
As
is
well
known,
continuous
cropping
can
lead
to
a
decrease
in
crop
yield
and
quality.
Despite
this,
remains
prevalent
practical
agricultural
production,
particularly
the
case
of
tobacco
cultivation,
owing
its
high
economic
value.
The
samples
for
this
study
were
collected
from
flue-cured
planting
base
located
Huili
County,
Liangshan
Yi
Autonomous
Prefecture,
Sichuan
Province,
China.
After
years
planting,
has
significantly
decreased.
In
order
explain
microecological
causes
phenomenon,
we
non-continuous
cropping,
5
years,
10
rhizosphere
soil,
analyzed
effects
long-term
on
nutrients,
enzyme
activities,
microbial
community
structure,
function
soil.
results
showed
that
with
majority
nutrients
(except
phosphorus
manganese)
soil
decreased
significantly,
structure
changed
significantly.
Correlation
network
analysis
changes
closely
related
urease,
active
organic
carbon,
available
iron
content.
functional
based
microorganisms
genes
microbiota
may
change
content
through
iron_respiration,
sulfur_respiration,
Carbon
fixation
prokaryotes
pathways.
correlation
mutually
confirmed
each
other,
both
emphasizing
important
role
carbon
shaping
community.
Based
study,
propose
improve
by
increasing
levels
readily
oxidizable
iron,
urease
activity
future,
so
as
alleviate
negative
impact
yield.
provide
theoretical
support
modifying
environment
nutrient
regulation,
thereby
enhancing
plant
growth
context
cropping.
Forests,
Год журнала:
2025,
Номер
16(4), С. 687 - 687
Опубликована: Апрель 16, 2025
This
study
aims
to
evaluate
the
growth
characteristics
of
six
Chinese
fir
(Cunninghamia
lanceolata
(Lamb.)
Hook.)
provenances
(S1–S6)
from
different
climatic
regions
in
subtropical
China
order
select
superior
with
strong
adaptability,
fast
growth,
and
reasonable
biomass
allocation.
These
results
will
provide
references
for
genetic
improvement
resource
utilization
plantations.
A
total
385
trees,
aged
26
48
years,
were
selected
gene
bank
Anhui.
Wood
core
sampling
was
used
obtain
tree
ring
width
early/latewood
data.
Growth
rate,
fast-growth
period,
allocation
each
provenance
analyzed
using
methods
such
as
logistic
equation,
BAI
(basal
area
increment),
latewood
percentage,
estimation.
The
period
starts
2nd
4th
year,
significant
occurring
around
14th
year
stabilizing
between
30
50
years.
Provenance
S2
showed
clear
advantages
rate
biomass,
while
S6
relatively
weak.
analysis
revealed
that
reached
their
peak
10
years
age,
a
gradual
decline
afterward,
but
maintained
higher
levels
longer
period.
Root-shoot
ratio
had
most
balanced
ratio,
promoting
stable
efficient
water
nutrient
absorption,
root-shoot
indicating
limitations.
Furthermore,
demonstrated
continuous
increase
after
excellent
potential.
provides
quantitative
adaptability
provenances,
offering
scientific
support
construction
breeding
plantations,
contributing
enhancing
productivity
ecological
plantations
sustainable
utilization.
Forests,
Год журнала:
2024,
Номер
15(6), С. 895 - 895
Опубликована: Май 22, 2024
Afforestation
plays
a
critical
role
in
ecosystem
restoration
and
carbon
sequestration.
However,
there
continues
to
be
insufficient
knowledge
about
the
long-term
effects
of
different
tree
species
on
forest
soil
central
subtropical
China.
In
this
study,
five
indigenous
afforestation
commonly
used
region,
including
Bretschneidera
sinensis,
Liriodendron
chinense,
Schima
superba,
Phoebe
bournei,
Cunninghamia
lanceolata,
were
selected
explore
their
soil.
The
soil’s
physicochemical
properties,
organic
content,
enzyme
activity,
respiration
investigated.
Our
results
revealed
significant
differences
among
even
with
same
types.
Broad-leaved
species,
particularly
L.
chinense
P.
exhibited
superior
higher
amounts
contents,
compared
coniferous
C.
lanceolata.
Notably,
for
two
studied
evergreen
bournei
seemed
improve
quality
more
than
S.
superba.
Hence,
increasing
proportion
broad-leaved
may
have
beneficial
effect
properties
microecology.
Furthermore,
considering
species’
compositions
will
help
optimize
health.
