THE DEVELOPMENT OF VEGETATION AND ENVIRONMENT IN THE JESTREBSKA KOTLINA BASIN AT THE END OF THE LATE GLACIAL AND DURING THE HOLOCENE PERIODS (DOKSY AREA)

The method of pollen analysis was used to study a profile sample taken from the Jestrebske blato mire, the Doksy District (northern Bohemia). The aim of the palaeobotanical was to perform a reconstruction of vegetation and environment for geobotanical and archaeological research purposes. Sediments dating back to the end of the Late Glacial and to both the Early and Middle Holocene were pollenanalytically studied. The results of the pollen analyses recorded the development of vegetation during the end of the Late Glacial, Preboreal, Boreal and Atlantic Periods. Parkline pine stands of the end of the Late Glacial developed to closed pine forests, during the Preboreal. Even during the Boreal the dominant pine formed forest communities were typical of the area under study, though trees with greater demands on temperature and moisture conditions continued to penetrate the existing communities. During the Lower and the first half of the Upper Atlantic Period, spruce forests and alder woods formed the dominant forest communities in mire. Nevertheless, Pinus was still dominant on extreme sites (both from the edaphic and geomorphological points of view). An early occurrence of Alnus and Picea is another characteristic feature of thr studied area. The conclusions drawn from pollenanalytical results were used for the reconstruction of the past environment of the Mesolithic and Neolithic Ages.