Risk evaluation system for urban geoenvironment

The risk evaluation system for urban geoenvironment is composed of three-level risk indicator systems and three user-level systems. The first-level risk indicator system concerns the divisional risk evaluation indicators for urban geoenvironmen- tal risk, which mainly serves the city government decision-making agency. The second-level indicator system involves the divisional risk evaluation indicators reflecting urban geoenvironmental background, geological hazard risk and geochemical frangibility, which mainly serves the city planning agency, The third-level indicator system contains the evaluation indicators reflecting the essential evaluation factors for urban geoenvironmental, which mainly serves the city management and construction and design departments.