Raster dataset representing a potential/suitability score for non-intensive and integrated, small-scale, African Catfish and Nile Tilapia fish farming systems, using ponds and small water bodies (SWB), in asset wealth index bellow the national average regions of the Republic of Chad. Produced under the scope of FAO’s Hand-in-Hand Initiative, Geographical Information Systems - Multicriteria Decision Analysis for value chain infrastructure location.
Non-intensive aquaculture systems are considered based on natural food supply from SWB or ponds, from integrated systems (crop/livestock byproducts or waste), or with complementary feeding resourcing to on-farm or locally produced feed.
The score results from combining sub-model outputs that characterize natural geographical and economical factors:
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Farm-gate sales - based on population density classification
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Water balance - precipitation/evapotranspiration
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Soil/slope suitability.
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Inputs - Crop and livestock byproducts
It consists of an arithmetic weighted sum of normalized grids (0 to 100):
("WaterBalance" X 0.5) + ("Soil/Slope " X 0.25) + (“Byproducts” X 0.125) + (”FarmgateSales” X 0.125)
Considered constraints or exclusive criteria are:
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Urban areas
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Protected areas
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Asset wealth Index national average
Data publication: 2021-11-01
Contact points:
Metadata Contact: FAO-Data
Resource Contact: Nelson Ribeiro
Data lineage:
Data sources, FAO Hand-in-Hand Geospatial Platform and OpenStreetMap (open data) including the following datasets:
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Atlas AI - Asset Wealth Index and Population Density (Africa, 2020).
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WaPOR_2 - Water Balance: precipitation and evapotranspiration monthly time-series (2009 to 2020) mean water balance modelling values: (Precipitation 1.1) - (evapotranspiration1.3) https://wapor.apps.fao.org/catalog/2
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Soil/Slope - (1.5X soils) + Slope. Soil data from FAO (soil suitability for ponds), slope HydroSHEDS DEM 30s (https://www.hydrosheds.org/hydrosheds-core-downloads) classification: Class 4 - Very suitable: <2 Class 3 – Moderately suitable: 2 - 5 Class 2 – Marginally suitable: 5 - 8 Class 1 – Unsuitable: > 8
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IFPRI MapSPAM 2017 - Production aggregate. https://data.apps.fao.org/map/catalog/srv/metadata/59f7a5ef-2be4-43ee-9600-a6a9e9ff562a
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Gridded Livestock of the World (GLW 4:) - Chicken and duck. https://data.apps.fao.org/catalog/iso/15f8c56c-5499-45d5-bd89-59ef6c026704
Resource constraints:
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 IGO (CC BY-NC- SA 3.0 IGO)
Online resources:
Download printable map, Chad
Download printable map, Sudanian agroecological zone
