2nd ENTAG Platform meeting-Suitability analysis for black pepper

1. GIS-based land suitability
mapping for Black pepper

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Outline
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Introduction
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• crop-land suitability mapping is the an important task that
needs to be undertaken to achieve optimum utilization
• Suitability is a function of land characteristics and crops
environmental requirements that involves evaluation and
matching of the land characteristics with a particular crop
requirements.
The main aim of this work was to identify lands suitable for the
production of the black pepper in Ethiopia
Please add something here
about BP

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Geospatial data
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 Soil: major types & properties (pH, ESD, texture, drainage)
 Climate: > long-term total annual rainfall
> long-term average annual temperature
> Length of growing period (LGP)
 Topographic data: DEM (altitude)
 Parks, lakes, rivers, road and town data were to excluded
(restricted) in the analysis.
 Admin. boundaries: used to generate statistics for area &
% of suitability for each legumes.
Materials and Methods

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The approach followed to solve such multi-criteria problem is a
weighted overlay analysis with the following main steps.
defining and rating of the factor value ranges according to
their suitability was done:
 based mainly on literature.
 Extracting environmental characteristics where the crop
is currently growing
Methods

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 determining the relative importance (weights) of the
factors influencing suitability for the crop.
 Computing suitability score: The scores for this crop is
determined by multiplying the importance weights by the
corresponding rating and summing these value.
Methods (cont.)

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% influence
(wt) of each
factor layer
Evaluations
Scale
values of
each factor
Suitability Model
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Methods (cont.)

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Results and discussion
 it is found that large proportion of lands in the West and
southwest part the low lands of Ethiopia that get high
rainfall are suitable for Black pepper .
 Are distributed in different Regions of the country
namely SNNPR, Benishangul Gumuzz (BSG), Gambela,
Oromia and Amhara showing the diverse potentials for
expansion.
The results of this work are presented here in the form of
maps and tables.

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Results and discussion
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 In the subsequent slides, it will be
observed that a large proportion of
suitable lands for Black pepper
are in in the West and southwest
part low lands of Ethiopia that is
getting high rainfall. it is distributed
in different Regions of the country
namely SNNPR, Benishangul
Gumuzz (BSG), Gambela, Oromia
and Amhra showing the diverse
potentials for expansion.

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Results and discussion (cont.)
Suitability Results by Region

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1. Suitability for Black pepper in SNNP

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2. Suitability for Black pepper in Gambella

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3. Suitability for Black pepper in BSG

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4.Suitability for Black pepper in Oromia

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5.Suitability for Black pepper in Amhara

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Conclusions
The quality and scale of such work is inherited from quality of the
available geo-spatial data and environmental requirement information
of the crop.
Hence, the outputs may not directly be used for applications that
demand finer resolutions.
this work showed the diverse potentials for expansion of this crop
and it is believed to serve as a guide for agricultural investment
It is suggested that researchers develop and update a detailed
document elaborating environmental requirement information based
on country specific findings, particularly when new varieties of this
crop are released;
Agricultural decision makers, investors, researchers, etc need to be
able to use this result as a general guide for research and investment
targeting decisions;

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Thank you!