Counterfactual Scenarios of Anthropogenic Climate Change Illustrate Effects on Global Water Yields
Опубликована: Янв. 1, 2025
Язык: Английский
Tracking grid-level freshwater boundary exceedance along global supply chains from consumption to impact
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Март 4, 2025
Abstract
Consumption
behaviors
exert
pressure
on
water
resources
both
locally
and
globally
through
interconnected
supply
chains,
hindering
the
achievement
of
Sustainable
Development
Goals
(SDG)
6
(Clean
sanitation)
12
(Responsible
consumption
production).
However,
it
is
challenging
to
link
hotspots
depletion
across
spatial
scales
final
while
reflecting
intersectoral
competition
for
water.
Here,
we
estimate
global
exceedance
regional
freshwater
boundaries
(RFBs)
due
human
withdrawal
at
a
5-arcmin
grid
scale
using
2015
data,
enabling
identification
different
scales.
To
reduce
uncertainty,
use
average
estimates
from
15
hydrological
models
5
environmental
flow
requirement
methods.
We
further
attribute
245
economies
134
sectors
via
multi-region
input-output
model,
EMERGING.
Our
refined
framework
reveals
previously
unknown
connections
between
international
trade.
Notably,
24%
grid-level
RFB
(718
km
3/yr;
95%
confidence
interval
659–776
km
3/yr)
outsourced
trade,
with
largest
flows
(52
47–56
water-stressed
South-Central
Asia
arid
West
Asia.
The
demand
cereals
other
agricultural
products
dominates
consumption-based
(29%),
exports
textiles
machinery
equipment
exacerbate
territorial
in
manufacturing
hubs
within
emerging
economies.
analysis
facilitates
tracing
scarcity
along
chain,
assigning
responsibilities
finer
Язык: Английский
Tracking grid-level freshwater boundary exceedance along global supply chains from consumption to impact
Nature Water,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 7, 2025
Язык: Английский
Spatiotemporal Disparity of Water Scarcity Risk and Sharing Responsibility: An Integrated Framework for Urban Agglomerations
Опубликована: Янв. 1, 2025
Язык: Английский
Changing water quality of a major rainfed river system of western India: insights from the Bhima river using water quality index
Environmental Research Communications,
Год журнала:
2024,
Номер
6(10), С. 105018 - 105018
Опубликована: Авг. 30, 2024
Abstract
The
Bhima
River
originating
from
the
Western
Ghats
of
India,
a
global
biodiversity
hotspot,
is
one
most
dammed
rivers,
used
intensively
for
multifaceted
purposes
including
agriculture
and
domestic
usage.
present
study
was
undertaken
early
pre-monsoon
to
start
monsoon
2023
encompassing
68
sampling
points
across
its
tributaries
develop
water
quality
index
(WQI).
Environmental
parameters
SWT,
pH,
DO,
TDS
EC
were
measured
in
situ
during
time
sampling.
Surface
samples
(1
L)
collected
estimation
dissolved
nutrients.
concentration
oxygen
found
be
below
2
mg
l
−1
several
representing
hypoxic
conditions
riverine
system.
ranged
55.12
ppm
2983
108.3
μS
cm
5939
respectively,
indicating
significant
spatial
temporal
variations.
ammonia
(0.05
–14.09
),
nitrate
(5.88
1596.16
o-
phosphate
(0.21
–35.47
)
reactive
silicate
(36.70
1455.15
indicates
possible
influx
agricultural
run-off
untreated
municipal
discharges.
Calculations
(WQI)
using
showed
‘bad
very
bad’
‘medium
good’
along
tributaries.
In-depth
analyses
WQI
pollution
‘hot-spots’
hints
toward
urgent
implementation
basin-level
mitigation
strategies
improvement
ecological
health
Upper
basin.
Язык: Английский