Preliminary Study on Optimization Approaches of Urban Green Space System Based on Calamity Prevention

The great disaster losses of Wenchuan earthquake makes people to consider profoundly some misunderstandings in the planning and construction of urban green space system at present,further arouses the research fever of calamity-preventive green space.Based on current urban pattern and green space system layout,optimizing calamity-preventive function of urban green space,building urban calamity-preventive green space system with reasonable functional level and layout structure,to practically improve calamity-preventive function of whole urban.