Study
region:
The
Yanxi
karst
groundwater
system
in
northern
China.Study
focus:
By
analyzing
long
timeseries
monitoring
data
of
the
level,
quality,
and
withdrawal
over
past
30
years,
this
paper
aims
to
evaluate
regime
characteristics
fault
block
guide
rational
exploitation
utilization
groundwater.
Using
analysis,
hydrogeochemical
isotope
evolution
under
large-scale
conditions
is
analyzed.New
hydrological
insights
for
results
reveal
that
before
after
exploitation,
cycle
changed
fundamentally,
groundwaterlevel
continued
fall
below
sea
table
a
time,
main
discharged
from
lateral
runoff
centralized
source
field.
spatial
distribution
quality
closely
related
surface
water
coal
measure
strata.
hydrochemical
components
are
mainly
controlled
by
dissolution
minerals
Ordovician
limestone
and,
certain
extent,
silicate-rock
minerals.
mineral
precipitation
concentration
caused
evaporation
relatively
weak.
It
urgent
take
series
management
protection
measures
resources
curb
trend
environment.
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 8, 2024
Abstract
This
study
presents
a
comprehensive
analysis
of
groundwater
level
prediction
and
management
using
an
extreme
gradient
boosting
(XGB)
model,
optimized
through
Bayesian
techniques.
To
address
the
challenge
unavailable
accurate
pumping
volume
data
in
high-density
agricultural
well
areas,
our
approach
leverages
power
consumption
as
key
feature
for
machine
learning
model.
innovative
method
enables
predictions
based
on
precipitation
data.
mitigate
significant
declines
during
drought
periods,
developed
XGB
model
offers
flexible
design
scenarios
with
varying
degrees
extraction
reduction.
capability
allows
rapid
levels,
providing
decision-makers
powerful
tool
to
adapt
hydrological
uncertainties
caused
by
future
climate
change.
The
results
testing
present
that
increases
levels
25%
reduction
range
from
0.45
0.79
m
wet
season
0.99
dry
season.
Interestingly,
percentage
increases,
elevations
do
not
increase
proportionally,
indicating
non-linear
characteristics
among
interactions
precipitation,
behaviors,
variations.
In
all
three
scenarios,
are
significantly
greater
than
those
implies
appropriate
reductions
volumes
periods
can
effectively
prevent
sharp
drawdowns.
Furthermore,
plays
crucial
role
formulating
policies
fallow
subsidy
programs.
When
considering
opportunity
cost
labor,
subsidies
first
second
crop
meet
only
30%
59%
economic
profit,
respectively.
shortfall
is
major
barrier
adoption
fallowing
practices
farmers
droughts.
Therefore,
it
enhance
these
make
more
viable
attractive
option
farmers.
conclusion,
while
predictive
modeling
robust
policy
decision-making,
there
clear
need
improved
incentives
integrated
strategies.
