Theory on disaster science and disaster dynamics

Based on two papers completed by the author including "Study on Theory of Disaster Research and its Practice" published in 1991 and "Theory and Practice of Disaster Study" published in 1996, the development of disaster science research in recent 6 years is reviewed, and the research frame of disaster science is brought forward. Moreover the theory system on "regional disaster system" is perfected further. Through the integrated analysis of resource exploitation and disaster formation mechanism and their dynamic change processes, disaster system dynamics in earth surface is analyzed. From the point of view of regional sustainable development, the regional development policy of "allowable disaster risk level" is defined to establish security community (region).