Therefore,in the process of construction of urban calamity preventive green space,a proactive apporach instead of a reactive one must be adopted,rules and regulations concerning urban calamity pre.

The urban disaster-prevention green space system is proposed to be set up, and the disaster-prevention green space category index, including emergency evacuation, temporary disaster shelter and transitional p.

Planning for urban green space system and establishing a calamity-prevention city with flexible structure;

We should realize that the research of urban disaster-prevention should not only focus on re-verifying and drawing new building disaster-prevention standards,but also on the limitation of urban space planning,the relation between distribution of different urban function system and disaster environment.

As the improvement of urbanization, complication of urban function, expanding of population, disorder of eco-balance, slow developing of traffic infrastructure, natural and artificial intrusion for city made urban disaster-prevention (especially in .

On the other hand, our urban disaster-prevention space system planning is separated in several mono-disaster prevention planning.

Design and Implmentation of Major Modules of Urban Disaster Prevention Information Management System Based on GIS;

the paper discuss the basic notions of "disaster" ,"urban disaster" , "urban disaster prevention" , "urban comprehensive disaster prevention" , "urban disaster prevention plan" and "urban comprehensive disaster prevention plan".

Urban disaster prevention is an important aspect to evaluate the whole-function of urban, it is the most important and actual method to construct urban disaster prevention space system for us to make full use of urban open space.