Boreskov

PP‐44expansion goes through 40 ° E at the east, and Carpinus betulus L. was detected in Mescheraand Donetskiy ridge. Hornbeam grows in that conditions up to resent time.According to our data, the north‐east board of area was stable through out last 3000 –4000 years, but “central” exclave disappeared recently.According to starting time of detection of pollen, we suggest Carpinus betulus L.conservation was in high‐relief regions with fat carbon soils – Volyn, Karpaty, Kodry.The local maximums – Kaliningradsko‐Polskiy, Volynskiy et all. – we determine as“climatic refugiums”. The processes of hornbeam’s introduction and elimination intoassociation were registered here according to climate changes. In the “absolut refugiums”hornbeam was registered constantly during late glacier period and Holocene. They lessdepend on climate changes. There are Karpaty, the south of Pridneprovskaya highland andKodry.Statistically average configuration of Carpinus betulus L. area reminds modern area, andwe suggest Carpinus betulus L. area mainly “inherent” from the past. The general developingtrend of Carpinus betulus L. area and Tilia and Quercus the same. The main differenceconnects with later Carpinus betulus L. becoming in East Europe. This period is dated 10500– 10000 y.a. when area structure of other broadleaf species have gotten features oflatitudinal zonality. The zones of most variable part Carpinus betulus L. into associationsituate at North‐West (Karelia, coast of White Sea), within the bounds of Predpolesye –Minskaya highland and along by modern north‐east board of area.Fluctuation of Carpinus betulus L. area boards usually have 500‐year period or close.Inside pattern of area is more clear, but its period of fluctuation expresses weakly.213