Pollen profile AMTKEL, Amtkel, Georgia

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（a.s.l.）处的全新世晚期河流及冰融河流沉积岩体，采用孢粉学（Palynology）、古果实学（Carpology）、地貌学（Geomorphology）与地质年代学（Geochronology）方法展开分析。研究证实，在亚大西洋期（Subatlantic Period）中期，现今山毛榉矮林分布区域曾被一片高山草甸带覆盖。据此，高山草甸的下界较现今海拔低370~400米，表明约公元2世纪以来区域气候曾发生显著降温。