一个地区出现新文化现象的时候 ,旧文化现象的许多主要部分并不是以消亡和破产为特征 ,而是经过选择、转换与重新解释以后 ,依然被一层一层地重叠和整合在新文化结构之中 ,这就造成了新旧文化之间的相互理解、协调、并存、让步的状态。另一方面 ,对于由传播途径而来的异地文化 ,也是通过选择、转换与重新解释以后 ,被一层一层地重叠和整合在新文化结构之中。于是形成了“新”、“旧”、“异”化时空的层叠整合。而这种层叠整合由于文化的发展并不是只有一次 ,而是经过多次 ,这样较后发展阶段的文化总是呈现出“多重文化层叠整合”的状态。文化变迁既然存在着一种多重文化时空层叠整合的情况 ,便可以用“发生学还原”的方法 ,将共时态呈现在我们面前的文化材料还原到历时态中去 ,从而展现文化发展的历史过程。“发生学还原”对于文化史的研究特别是对于原始文化史的研究 ,具有方法论意义 When a new cultural phenomenon occurs in a region, many of the major parts of the old cultural phenomenon are not characterized by extinction and bankruptcy but, after being selected, transformed and reinterpreted, are still layer by layer overlapping and integrated in the new cultural structure This has resulted in the mutual understanding, coordination, coexistence and concession of old and new cultures. On the other hand, as for the off-site cultures coming from the transmission channels, they are also overlaid and integrated one after another in the new cultural structure through selection, conversion and reinterpretation. Thus formed a “new”, “old” and “different” space-time cascade integration. And this kind of cascade integration is not the only one because of the development of culture, but after many times, so the culture of the later stage of development always presents the state of “multi-culture cascade integration”. Cultural Change Now that there is a situation in which multiple cultures are layered and integrated in time and space, we can use the method of “generative reduction” to restore the cultural materials that are presented to us in synchronic conditions to diachronic situations and thus show the history of cultural development process. It is of methodological significance to study the cultural history, especially the study of the original cultural history,