What is a spatial decision support system (SDSS) and how is it used in risk management?

• A. An SDSS combines spatial data, models, and visualization to support decision-makers in choosing among alternatives under geographic constraints, improving resilience planning and resource allocation.
• B. An SDSS is a database for storing non-spatial data exclusively.
• C. An SDSS is a weather forecasting model.
• D. An SDSS is a regulatory compliance reporting tool.

Answer: (A)

A spatial decision support system blends geographic information with analytical models and visualization to help decision-makers compare options that differ by location. In risk management, this means you can combine maps of hazards, exposure, and critical infrastructure with scenario models and present the results in clear visuals. Layering data like hazard zones, population, transport networks, and facilities lets planners see how different choices perform under geographic constraints, supporting decisions on where to build, how to allocate resources, and how to strengthen resilience. It enables scenario analysis and quick replanning during events, improving risk reduction and response planning. The other descriptions miss the core integration of spatial data, models, and visualization that makes an SDSS capable of location-based decision support.