1. Update geospatial activities @AfricaRice
Sander Zwart
Geospatial Opportunities & Rural Welfare Convening
September 6-8, Seattle, USA

2. Research themes – spatial analysis
Providing high-quality baseline maps of the current rice area (irrigated, mangrove, inland valley);
Support the effective diffusion of scalable rice technologies by characterizing rice production systems / assess target nevironments; and
Support agriculture investment by mapping high potential areas for rice development.

3. Mapping rice and characterization
Irrigated rice
Large-scale systems
Gradual expansion
Two seasons
Rainfed upland
and lowland
Smallholder fields
Intercropping
Fragmented landscape
Inland valleys / wetlands
Very dynamic
One rice crop
Mangrove rice
Cleared lands in forested areas
Stable systems
One season only

4. Mapping rice and characterization Irrigated rice
Rice expansion and intensification
Digitizing all irrigated systems
Senegal

5. Mapping rice and characterization Irrigated rice
Rice expansion and intensification
MODIS time series and crop phenology assessment
Single to double cropping
Wet to dry season
Senegal

6. Mapping rice and characterization Irrigated rice
River valley region:
Heat stress causing crop damage
Floods
Mauritania
Delta region:
Cold stress causing crop damage
Salinity causing growth reduction
Floods
Senegal

7. Mapping rice and characterization
Mangrove rice
Baseline map 2013
Landsat 8
validated
available as shp or kmz

8. Mapping rice and characterization Mangrove rice
Mangrove rice characterization:
Elevation
Rice phenology
Soils
Elevation

9. Mapping rice and characterization
Climate change
2 major seasons
3 time slices
4 RCPs
subnational level
Feeds into crop models for analysis of yield reductions

10. Mapping rice and characterization
Flood frequency and scaling sub-1 rice varieties

11. Mapping potential for rice development
Inland valleys data base (100+ parameters):
Spatial data sets (population, streamflow acc, etc., slopes, soils)
Survey results (socio-economic data)
Random Forest analysis to assess parameters explaining the potential for development
Spatial model to assess initial estimate for potential for development
Remaining parameters as checklist for field validation

12. Mapping potential for rice development:
National scales (Togo, Ghana, Benin)
West-Africa

13. Thank you! Merci!
Center of Excellence for Rice Research