我们的研究表明,特定地震区每轮孕育周期主震事件震级值相差较小,因此可根据主震震级值确定地震区危险性等级.据此,对已划定的中国及其周边板内地震区、环太平洋地震带与欧亚地震带板间地震区,给出了某些地震区危险性等级评价结果,可供有关部门参考. Our research shows that there is a small difference between the magnitudes of the mainshock events in each gestation cycle in a particular earthquake area so that the risk level of the earthquake area can be determined according to the magnitudes of the mainshock shocks.Accordingly, Area, the Pacific Rim and the Eurasian earthquake zone plate seismic zone, given some of the risk assessment of seismic zone results available to the relevant departments for reference.