三星堆文明消失原因的古环境因素探讨

On Environmental Evolution of Disappearance of Sanxingdui Civilization

三星堆文明的神秘消失,古环境演变应是重要原因,与全球性古气候环境变化直接相关。通过对古蜀(广汉)地区古环境演化研究得出,3.0kaBP左右该区古环境演化与中国大部分地区有相似的变化趋势,也有气候变冷、环境恶化的事件发生。推断该区古环境恶化的主要表现是洪水流量突发性质的变幅增大,导致山前冲积扇上的河流摆动迁徙加强,以致其中一次突发性河流改道冲毁了三星堆古城。

The mysterious disappearance of Sanxingdui civilization site, resulting from the evolution of palaeo-climate,is closely related to the change of global ancient climate. Through the research of palaeo-environment in Sichuan Province, during 3.0 ka BP or so,a generally similar trend of palaeo-environment evolution is found in the most areas of China,always with changing climate and degradation of palaeo-environment. Meanwhile,the degradation of palaeo-environment shows the accidental flow of flood fluctuate greatly,leading to the increasing moving of the rivers. One of the rivers changed its flowing way accidentally and thus rained the Sanxindui site.