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@PHDTHESIS{Gramlich:1010172,
author = {Gramlich, Richard Jan Michael},
othercontributors = {Nacken, Heribert and Schüttrumpf, Holger},
title = {{L}and suitability evaluation for agriculture: development
of an universal approach based on the case of the {B}lue
{N}ile {B}asin},
school = {Rheinisch-Westfälische Technische Hochschule Aachen},
type = {Dissertation},
address = {Aachen},
publisher = {RWTH Aachen University},
reportid = {RWTH-2025-03904},
pages = {1 Online-Ressource : Illustrationen},
year = {2025},
note = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
University; Dissertation, Rheinisch-Westfälische Technische
Hochschule Aachen, 2025},
abstract = {Water, the source of life and key element for economic and
population growth, is the reason for many conflicts on
earth. In light of climate change and global warming, it is
even more important to use it carefully, as it will become
even more scarce in countries already facing water scarcity.
Ethiopia is facing economic water scarcity as the
theoretically water-rich country previously could not store
large amounts of water from precipitation in the country’s
wet season in late summer due to lacking storage capacities.
Since the construction of the Grand Ethiopian Renaissance
Dam and three more dams planned along the Blue Nile, this
has changed. As a developing country facing several droughts
and famines in the previous years, solid food supply through
extensive expansion of agriculture using the newly developed
sources for water is assumed to be the key to success. As
agriculture by far is the largest consumer of water compared
to other industrial sectors, however, large potential for
reduced discharges towards the downstream countries Sudan
and Egypt emerge. This dissertation examines how large the
water abstraction from the Blue Nile river catchment area
can be in the future based in a set of boundary conditions.
Firstly, starting with the determination of potentially
suitable areas for irrigated agriculture performing a
Multi-Criteria Decision Analysis. Secondly, developing
cropping patterns for the different agro-economical zones
considering cash crops and food crops, and thirdly,
determining the irrigation water demand for these pattern
considered different irrigation methods. The results show
large variation depending on the criteria combined. A total
of 94.640 km² or $47.47\%$ of the Blue Nile Basin were
determined as suitable for irrigated agriculture. The
consideration of different irrigation techniques, methods,
cropping pattern and climatic zones led to 48 scenarios for
which the annual irrigation water demand being calculated.
The values for annual water abstraction range from 29.25 to
689.28 BCM depending on the chosen scenario.},
cin = {314520},
ddc = {624},
cid = {$I:(DE-82)314520_20140620$},
typ = {PUB:(DE-HGF)11},
doi = {10.18154/RWTH-2025-03904},
url = {https://publications.rwth-aachen.de/record/1010172},
}
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