GeoWorld July 2011

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Digital Food Security Atlas Physical and Human Geography Administrative boundaries Population density Elevation Other variables Food Security and Nutrition Number of food-insecure people in 2009 Prevalence of food-insecure people Prevalence of child malnutrition Other variables Trade and Infrastructure Road network Market access Trade centers Other variables Agriculture and Water Production Irrigation sources Other variables Health Hospitals Health centers Access to health centers Other variables lFigure 3. A Food Security Data Model is shown via an ArcReader interface, showing the main sectors of Yemen’s economy. lFigure 4. A Geodatabase design workflow has four basic steps for implementation. Conceptual framework and guidelines User needs- assessment data models Check for existing Data inventory (conceptual and logical model) A Future Outlook GIS significantly contributed to Yemen’s national food- security strategy. Through spatial analysis, researchers identified spatial determinants of food security and measured access to markets and quality health ser- vices—key influential indicators of food security. Such analysis also promoted the use of international standards for spatial data infrastructures, laying the foun- dation for the creation, exchange and use of geospatial data among Yemeni national agencies. Yemeni analysts have been trained in the use of the Food Security Atlas, and several institutions have adopted the underlying data model to add and organize their own data. Furthermore, the food-security spatial data model serves as a basis for further spatial data development to develop core maps, build sustainable mechanisms for sharing and maintaining the quality of geographic information, and promote the efficient use of geo- graphic information for better decision making. Some avenues for future exploration include incorpo- rating precise household location and spatial structures, such as social networks driven by economic incentives, in the framework of spatial dependence. Continued cooperation and investment in the construction and col- lection of national geospatial databases will significantly enhance the capability and analytical power of researchers to address pressing issues in food security. integration Model Coordinate system dataset model Raster Domain values Geodatabase schema Import model Documentation (ArcGIS diagram) Data loading implementation Metadata Geodatabase model ADVERTISER ADVERTISERINDEX Ashtech BAE Systems GXP User Conference GEOINT GeoTec Event 2011 GeoWorld Reprints José Funes is research analyst, International Food Policy Research Institute; e-mail: Clemens Breisinger is research fellow; e-mail: Olivier Ecker is postdoctoral fellow; e-mail: GeoWorld Subscriptions ITT Visual Information Solutions 7 31 13 21 9 JUL Y 2O11 / WWW . GEOPLA CE . COM 29 Geodatabase schema data model procedures Development of Tables Feature dataset Relationships feedback User inventory Data PAGE 5 32

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