中国东部末次冰期雪线高程重建与成冰气候分析

Reconstruction of Snow Line Elevation and Preliminary Analysis on Climatic Characteristics in Last Glacial Period in Eastern China

摘要:

在蒙山第四纪冰川遗迹与光释光测年研究的基础上，结合以往我国东部猛犸象化石出土位置、孢粉数据库、以及雪线高程的研究成果，首次对我国东部末次冰期时的雪线高程进行了恢复重建，并绘制了我国东部及东亚地区雪线高程图，在此基础上对我国东部蒙山冰期时的气候特征进行了探讨，认为我国东部冰期时的北路寒潮形成的 “东亚冷槽”，是我国东部第四纪山谷冰川的表现形式及形成原因。

Abstract:

On the basis of Quaternary glacial relics in Mengshan area and dating of light release, combining with research achievements of Mammoth fossils unearthed position, pollen database, and the snowline elevation in eastern China, restoration and reconstruction of snowline elevation during the last glacial period in eastern China's has been carried out for the first time, the snowline elevation maps of eastern China and east Asia area has been drawn. On these basis, climate characteristics of eastern China in Mengshan glacial period have been stuided. It is regarded that "Eastern Aisa cold trough" formed by north cold in the glacial period is the performance and the forming reason of Quaternary valley glaciers in eastern China.