Environmental Research Letters,
Год журнала:
2022,
Номер
17(12), С. 124024 - 124024
Опубликована: Ноя. 22, 2022
Abstract
Nowadays,
more
than
70%
of
global
freshwater
is
used
for
agriculture.
The
evaluation
the
water
footprint
crops
(CWFs)
an
important
method
to
measure
effects
crop
production
on
resource
utilization
and
environmental
pollution.
However,
little
attention
paid
impact
socioeconomic
development
differences
each
crop.
In
this
study,
green,
blue,
gray
footprints
were
quantified,
drivers
changes
in
CWFs
revealed.
It
great
significance
provide
targeted
guidance
agricultural
management
Heilongjiang,
a
province
with
largest
China.
Here,
we
show
that
total
(TWF)
increased
from
62.2
billion
m
3
101.8
,
high-value
areas
mainly
concentrated
west
south
Heilongjiang
Province.
Over
95%
grain
sown
covered
by
maize,
rice
soybean,
which
presented
greatest
TWF.
share
green
TWF
has
increased,
growth
increasingly
dependent
rainfall.
Furthermore,
our
results
highlight
effective
irrigated
quota
crop-planting
scale
maize
contribute
increase.
value-added
score
weakly
decoupling
most
municipalities,
indicating
improved
efficiency
use;
growing
slower
economy,
undesirable.
Changes
same
as
left
half
inverted
‘
U
‘Environmental
Kuznets
Curve’,
not
reached
‘inflection
point’.
More
efforts
control
while
improving
are
needed
ensure
economic
does
come
at
expense
consuming
enormous
quantities
water.
Ecological Indicators,
Год журнала:
2023,
Номер
154, С. 110581 - 110581
Опубликована: Июль 2, 2023
Non-point
source
(NPS)
pollution
has
gradually
become
the
main
of
water
environmental
with
rapid
economic
development
during
recent
decades,
especially
for
economically
developed
Yangtze
River
Basin
China.
Due
to
urbanization,
pressure
environment
in
Poyang
Lake
basin
(PYLB)
been
increasing.
In
this
study,
spatial
and
temporal
variations
NPS
loads
including
total
nitrogen
(TN)
phosphorus
(TP)
PYLB
period
2003–2012
were
firstly
investigated
by
using
SWAT;
then
changes
under
different
land
use
types
identified
SWAT,
transition
matrix,
statistical
analysis
scenario
methods;
finally,
risk
assessment
achieved
means
grey
footprint
theory.
The
results
showed
that
concentrated
from
April
June
a
large
inter-annual
variability.
Gan
contributed
largest
proportion
pollutants
entering
into
lake
while
Xiu
produced
smallest
loads.
Under
background
policy
"Grain
Green
Project"
since
2002,
areas
cultivated
land,
grassland
bare
decreased
2000–2010,
those
forest
settlement
increased.
As
pollution,
area
decreased,
unit
load
intensity
significantly
By
calculating
annual
GWF
TN
TP
their
corresponding
WPL,
which
all
an
upward
trend.
obtained
study
have
practical
significance
reducing
controlling
River.
Journal of Hydrology Regional Studies,
Год журнала:
2024,
Номер
51, С. 101647 - 101647
Опубликована: Янв. 10, 2024
Yangtze
River
Economic
Belt,
China
As
the
major
national
strategic
development
area
of
China,
there
have
always
been
vital
problems
about
imbalance
water
resources
distribution
and
disparity
economic
levels
in
YREB.
Quantitative
analysis
use
efficiency
(WUE)
is
essential
to
rational
resources,
as
well
sustainable
development.
In
this
study,
a
WUE
evaluation
index
system
for
prefecture-level
cities
YREB
was
constructed,
Super-Efficiency
Data
envelopment
Slacks-Based
Measure
(DEA-SBM)
model,
Global
Malmquist-Luenberger
productivity
index,
combined
with
geographically
weighted
regression
model
were
utilized
measure
identify
spatiotemporal
evolution
characteristics
its
influencing
factors.
From
temporal
perspective,
manifests
significant
upward
trend
from
2005
2020,
growth
presents
lower
reach
>
middle
upper
reach;
spatial
pattern,
has
divergence
characteristics,
high
mainly
occurred
developed
leading
cities,
while
developing
midstream
upstream
tended
be
inefficient;
various
effects
on
also
analyzed,
highlighting
that
technical
advancement
key
driver
evolution.
Then
negative
industrial
structure
urban
environment
becoming
more
significant.
Finally,
effective
measures
upstream,
downstream
discussed.
Water,
Год журнала:
2022,
Номер
14(12), С. 1893 - 1893
Опубликована: Июнь 12, 2022
Problems
such
as
water
scarcity
and
pollution
frequently
occur
in
coastal
zones.
This
study
investigated
the
grey
footprint
sustainability
intensity
of
Yantai
between
2014
2019
by
taking
both
surface
groundwater
into
consideration.
The
research
results
indicated
that
firstly
increased
then
decreased
2019.
lowest
was
744
million
m3.
agricultural
accounted
for
a
large
proportion
total
footprint.
Although
fluctuates
Yantai,
it
maintains
well.
gradually
to
<10
m3/10,000
CNY.
economic
benefit
utilization
efficiency
resources
have
been
improved
yearly.
quality
environment
has
also
improved.
this
paper
provides
some
useful
information
protection
sustainable
cities.
