根据中国东部山地古泥石流沉积记录 ,推断在地形条件具备的前提下 ,泥石流形成经过了冰 (缘 )期气候作用下的物质积累和间冰 (缘 )期气候作用下的水动力作用过程 ,二者在时间上具有差异性。按照晚第四纪以来物质与水动力条件的空间波动范围 ,可将中国东部泥石流的形成划分为 3个区 ,北部主要受控于季风降水 ,中部主要受控于物质积累 ,而南部则只与地形切割等因素联系密切。据此提出相应的减灾对策。 According to the records of the ancient mudflows in the mountainous area of ​​eastern China, it is inferred that under the premise of the topographic conditions, the formation of debris flows through the process of hydrodynamic process under the climatic conditions of ice (marginal) and intercropping (marginal) There are differences in time. According to the spatial fluctuation range of material and hydrodynamic conditions since the late Quaternary, the formation of debris flows in the eastern part of China can be divided into three zones. The northern part is mainly controlled by monsoon precipitation. The central part is mainly controlled by material accumulation while the southern part only with Terrain cutting and other factors closely. Accordingly, the corresponding disaster mitigation measures are proposed.