Pollen profile AMTKEL, Amtkel, Georgia@en

The rock mass of fluvial and fluvioglacial deposits of the Late Holocene has been studied at the altitude of 1830 m a.s.l. using the palynologic, carpologic, geomorphologic, and geochronologic methods. It was ascertained that in the mid-Subatlantic period the area of the present-day beech elfin woodland was occupied by a belt of alpine meadows. Thus, the lower border of alpine meadows ran 370-400 m lower than the recent level, pointing to a rather significant cooling of the climate that occurred from ca 2nd cent. A.D.本研究针对海拔1830米（海平面以上）处的全新世晚期河流及冰水沉积岩体，采用孢粉学（palynologic）、果类学（carpologic）、地貌学（geomorphologic）及地质年代学（geochronologic）方法开展研究。结果证实，在亚大西洋期中期，现今矮山毛榉林分布区域曾被高山草甸带覆盖。据此可知，彼时高山草甸的下界较现代海拔低370~400米，表明公元约2世纪前后发生了较为显著的气候降温事件。