• 责任者：Dong Ming (College of Tourism and Geography Science ; Yunnan Normal University ; Kunming 650092 ; China) ; Fang Xiaomin
• 刊名：Quaternary Sciences
• 出版年：2011
• 卷期：31(1)
• 关键词：孢粉组合 ; palynological assemblage ; 更新世 ; Pleistocene ; 古气候 ; paleoclimate ; 甘肃 ; Gansu Province
• 页码：p.104-111
• 图表：2 illus., 40 refs.
• 分类号：1400
• issnNo：ISSN1001-7410
• isbnNo：CN11-2708/P

The authors present a continuous 78 m thick Dongshanding Paleo-lake sediment section based mainly on clayey siltstone and siltstone, which is situated at Jinggou township Dongshanding village (35°35’N, 103°04’E, an elevation of 2 429.5 m). The result of the identification showed that 91% samples pollen amount attained statistical standard among them. According to variation characteristics of spore-pollen assemblage, Dongshanding Formation (Dongshanding Paleo-lake sediment) into 3 spore-pollen assemblage zones (consisting of 6 subzones) can be divided, representing 3 vegetational evolution periods or arid-wet-arid climate change sequence during Early Pleistocene.