In the recent years, emergencies happen frequently in China, therefore the research on emergency management has been paid more attention by many scholars. The emergency management process is divided into four periods which are mitigation, preparation, replying, and resuming based on classic emergency management cycle theory. The concept of "disaster mitigation capability" is systematic, comprehensive, and theoretical; as a result, deep study on it has a high theoretical value. The related literature study shows that there are few systemic researches aiming at emergency mitigation capability of urban communities. Based on the present developing process and emergency features of urban communities, building and applying the evaluation system for urban communities' disaster mitigation capability has the important theoretical and practical value to the safety of urban communities and the consistent development of society. The evaluation system builds on three parts of theories; they are emergency management theory, "the preparation community" theory, and "the resuming community" theory. The evaluation system of disaster mitigation capacity has been built based on the emergency management, including six first-level indexes and 25 second-level indexes, and the analytic hierarchy process and grey system theory is applied to build multi-hierarchical grey comprehensive evaluation model in order to quantitatively evaluate disaster mitigation capacity of urban communities. Based on the model and the computation result of the example of Longyuanhu Community of city Jiaozuo in Henan Province, it is shown that the disaster mitigation capacity of the community is between good and not bad, and the disaster deduction of emergency management in communities needs to be strengthened. The comprehensive evaluation model provides the useful consideration for improving disaster mitigation capacity in urban communities.
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