Abstract.
East
African
forested
mountain
regions
are
vital
in
generating
and
supplying
water
resources
to
adjacent
arid
semi-arid
lowlands.
However,
these
ecosystems
under
pressure
from
both
climate
land
use
changes.
This
study
aimed
analyze
the
effects
of
changes
on
yield
using
Budyko
framework
as
a
first-order
conceptual
assuming
steady-state
for
pristine/protected
areas.
For
nine
selected
towers
Africa,
amount
distribution
their
decadal
were
analyzed.
Results
show
that
most
areas
inside
outside
human
influences.
Water
was
more
sensitive
compared
within
themselves.
surrounding
lowlands,
had
greater
impacts
yield.
We
conclude
have
seen
strong
shift
towards
wetter
conditions,
especially
period
2011â2019,
while,
at
same
time,
potential
evapotranspiration
is
gradually
increasing.
Given
identified
non-resilient
changes,
future
likely
also
experience
extreme
variations.
Abstract
High-resolution
climate
model
projections
for
a
range
of
emission
scenarios
are
needed
designing
regional
and
local
adaptation
strategies
planning
in
the
context
change.
To
this
end,
future
simulations
global
circulation
models
(GCMs)
main
sources
critical
information.
However,
these
not
only
coarse
resolution
but
also
associated
with
biases
high
uncertainty.
make
useful
impact
modeling
at
level,
we
utilized
bias
correction
constructed
analogues
quantile
mapping
reordering
(BCCAQ)
statistical
downscaling
technique
to
produce
10
km
spatial
change
database
based
on
16
CMIP6
GCMs
under
three
(SSP2-4.5,
SSP3-7.0,
SSP5-8.5).
The
strategy
was
evaluated
using
perfect
sibling
approach
detailed
results
presented
by
taking
two
contrasting
(the
worst
best
performing
models)
as
showcase.
evaluation
demonstrate
that
substantially
reduced
generated
higher
daily
data
compared
original
GCM
outputs.
Proceedings of the National Academy of Sciences,
Год журнала:
2022,
Номер
119(50)
Опубликована: Дек. 9, 2022
Ethiopia
is
home
to
one
of
the
richest
and
most
unique
assemblages
fauna
flora
on
African
continent.
Contained
within
its
borders
are
two
major
centers
endemism,
mesic
Roof
Africa
(also
known
as
Ethiopian
Highlands)
arid
Horn
Africa,
resulting
from
country’s
varied
topography
consequent
geographic
isolation.
These
endemism
crucial
global
conservation
evidenced
by
their
classification
Eastern
Afromontane
biodiversity
hotspots,
respectively.
Ethiopia’s
diverse
ecosystems
they
contain
increasingly
threatened
climate
change
growing
impacts
Africa’s
second
largest
human
livestock
populations.
In
this
paper,
we
focus
several
key
areas
recent
ongoing
research
that
have
broadened
our
understanding
nature
in
Africa.
Topics
explored
include
behavioral
ecology
large
social
mammals,
coffee
forests,
approaches
community
conservation,
fortress
nature-based
solutions.
We
also
highlight
increasing
prominence
scientists
studies
decades.
suggest
promising
avenues
for
future
evolutionary
biology,
ecology,
systematics,
discuss
how
work
helping
us
better
understand
conserve
human-dominated
landscapes
other
tropical
regions
today.
Hydrology and earth system sciences,
Год журнала:
2021,
Номер
25(11), С. 5641 - 5665
Опубликована: Ноя. 3, 2021
Abstract.
East
African
forested
mountain
regions
are
vital
in
generating
and
supplying
water
resources
to
adjacent
arid
semi-arid
lowlands.
However,
these
ecosystems
under
pressure
from
both
climate
land
use
changes.
This
study
aimed
analyze
the
effects
of
changes
on
yield
using
Budyko
framework
as
a
first-order
conceptual
assuming
steady-state
for
pristine/protected
areas.
For
nine
selected
towers
Africa,
amount
distribution
their
decadal
were
analyzed.
Results
show
that
most
areas
inside
outside
human
influences.
Water
was
more
sensitive
compared
within
themselves.
surrounding
lowlands,
had
greater
impacts
yield.
We
conclude
have
seen
strong
shift
towards
wetter
conditions,
especially
period
2011–2019,
while,
at
same
time,
potential
evapotranspiration
is
gradually
increasing.
Given
identified
non-resilient
changes,
future
likely
also
experience
extreme
variations.
Journal of Hydrology Regional Studies,
Год журнала:
2023,
Номер
46, С. 101344 - 101344
Опубликована: Фев. 15, 2023
Study
Region:
Tributary
of
Abay
basin,
Upper
Blue
Nile
River
Basin,
Ethiopia.
focus:
The
study
is
aimed
to
assess
and
classify
groundwater
potential
zones
(GWPZ)
Guder
watershed,
the
(UBN)
Basin
using
remote
sensing
(RS)
GIS
techniques.
Geomorphology,
land
use/cover,
Lithology,
soil
type,
drainage
density,
texture,
slope,
lineament,
rainfall,
elevation
are
all
used
create
zones.
Based
on
Saaty's
AHP
method,
expert
judgment,
their
relative
influence
occurrence,
attributes
these
influencing
factors
were
given
appropriate
weightage
according
quantile
classification.
New
hydrological
insights
for
region:
GWPZ
was
classified
as
a
very
poor,
moderate,
good,
good
class.
This
found
that
approximately
33.58%
basin
falls
into
classes,
with
similar
value
16.79%,
whereas
values
23.3%,
20.2%,
22.9%
represented
by
moderate
respectively.
Field
data
like
borehole
test
validate
GWPZ.
R2
kappa
statistics
estimated
73%
76.7%,
respectively,
confirmed
study's
findings.
confirms
RS
techniques
successful
model
delineation
can
be
applied
other
Ethiopian
basins.
Defence and Peace Economics,
Год журнала:
2022,
Номер
34(5), С. 618 - 645
Опубликована: Май 1, 2022
During
the
2021
conflict
in
Tigray
(north
Ethiopia),
crop
cultivation
has
been
hampered
by
warfare.
Oxen
have
looted
and
killed,
farm
inputs
tools
destroyed
Ethiopian
Eritrean
soldiers.
Farmers
felt
vulnerable
out
open
with
their
oxen.
To
produce,
farmers
evaluated
risks
involved
ploughing
organised
lookouts.
Overall,
a
large
part
of
land
had
tilled
difficult
conditions,
crops
sown
that
require
minimal
management,
without
fertiliser,
what
led
to
low
yields.
True
Colour
Composite
images,
produced
from
Sentinel
satellite
imagery
show
smallholder
irrigation
schemes
were
operational.
There
was
shift
commercial
cereals.
The
situation
western
particular,
as
there
ethnic
cleansing
population
often
2020
rainfed
even
not
harvested.
our
findings
Tigrayan
farming
system
is
resilient,
thanks
community
self-organisation,
combining
common
strategies
agrarian
societies
wartime:
spatio-temporal
agricultural
activities
avoid
proximity
soldiers
shifts
types.
Rather
unique
relying
on
communal
aid,
while
blockade
region
made
outmigration
off-farm
income
no
options
for
farmers.
Frontiers in Environmental Science,
Год журнала:
2023,
Номер
11
Опубликована: Май 9, 2023
Climate
extremes
have
more
far-reaching
and
devastating
effects
than
the
mean
climate
shift,
particularly
on
most
vulnerable
societies.
Ethiopia,
with
its
low
economic
adaptive
capacity,
has
been
experiencing
recurrent
for
an
extended
period,
leading
to
impacts
acute
food
shortages
affecting
millions
of
people.
In
face
ongoing
change,
frequency
intensity
extreme
events
are
expected
increase
further
in
foreseeable
future.
This
study
provides
overview
projected
changes
indices
based
downscaled
high-resolution
(i.e.,
10
×
km
2
)
daily
data
derived
from
global
models
(GCMs).
The
magnitude
spatial
patterns
trends
were
explored
under
a
range
emission
scenarios
called
Shared
Socioeconomic
Pathways
(SSPs).
performance
GCMs
reproduce
observed
base
period
(1983–2012)
was
evaluated,
projections
(2020–2100)
assessed
associated
uncertainties
quantified.
Overall,
results
show
largely
significant
spatially
consistent
temperature-derived
acceptable
model
period.
dominated
by
at
beginning
projection
while
end
century
proportional
arise
both
SSPs.
precipitation-related
heterogeneous
terms
distribution,
magnitude,
statistical
significance
coverage.
Unlike
temperature-related
indices,
uncertainty
internal
variability
constitutes
considerable
proportion
total
trends.
Our
work
comprehensive
insight
into
relatively
high
resolution
related
sources
uncertainties.
Geofluids,
Год журнала:
2022,
Номер
2022, С. 1 - 26
Опубликована: Апрель 4, 2022
Groundwater
is
the
most
crucial
resource
for
human
beings
and
plays
an
important
role
in
combating
climate
change
substantial
to
existence
on
globe.
Overall
increased
demand
water
different
sectors,
population
growth,
unreliable
rainfall
necessitates
planning
management
of
groundwater.
In
this
study,
groundwater
potential
zones
are
delineated
by
combining
remote
sensing
geographical
information
system
techniques
Guder
watersheds
Upper
Blue
Nile
Basin.
prepared
using
various
multi-influencing
factors
like
geomorphology,
land
use/cover,
lithology,
soil
type,
texture,
drainage
density,
slope,
lineament,
rainfall,
elevation.
These
influencing
factors’
features
were
given
appropriate
weightage
according
Saaty’s
AHP
method,
expert
judgment,
their
relative
significance
occurrence.
The
zone
was
classified
into
categories
as
very
poor,
moderate,
good,
good
quantile
classification.
This
study
reveals
that
about
33.6%
River
Basin
represents
a
andvery
GWPZ
category
with
equal
value
16.8%,;
while
values
23.3%,
20.2%,
22.9%
denoted
moderate
zone,
respectively.
validated
field-collected
data
such
well
discharge
depth.
An
accepted
similarity
observed
between
basin’s
depth
graphically.
results
also
verified
correlation
kappa
statistics
0.73and
77%,
certain
sensible
dimension
consistency
pairwise
comparison
overall
weightage.
high
GWPZs
found
northern
part
starting
from
center
longitude
area,
more
along
northwestern,
southern,
southwestern
subbasin.
Low
low
potentiality
has
been
seen
at
distances
due
presence
escapements,
hills
steep
side
slopes,
rock
surfaces.
revealed
depth,
showed
capacity
aquifer
store
may
depend
profile.
attests
GIS
effective
model
delineation
can
be
applied
other
basins
Ethiopia.
